Relevant bibliographies by topics / Chicken broiler

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Chicken broiler'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Chicken broiler"

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Feng, Ze-Qing, Ting Lian, Yong Huang, Qing Zhu, and Yi-Ping Liu. "Expression Pattern of Genes of RLR-Mediated Antiviral Pathway in Different-Breed Chicken Response to Marek’s Disease Virus Infection." BioMed Research International 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/419256.

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It has been known that the chicken’s resistance to disease was affected by chicken’s genetic background. And RLR-mediated antiviral pathway plays an important role in detection of viral RNA. However, little is known about the interaction of genetic background with RLR-mediated antiviral pathway in chicken against MDV infection. In this study, we adopted economic line-AA broilers and native Erlang mountainous chickens for being infected with MDV. Upon infection with MDV, the expression ofMDA-5was upregulated in two-breed chickens at 4, 7, and 21 d.p.i. It is indicated that MDA-5 might be involved in detecting MDV in chicken. Interestingly, the expression ofIRF-3andIFN-βgenes was decreased in spleen and thymus of broilers at 21 d.p.i, but it was upregulated in immune tissues of Erlang mountainous chickens. And the genome load of MDV in spleen of broiler is significantly higher than that in Erlang mountainous chickens. Meanwhile, we observed that the death of broiler mainly also occurred in this phase. Collectively, these present results demonstrated that the expression patters ofIRF-3andIFN-βgenes in chicken against MDV infection might be affected by the genetic background which sequently influence the resistance of chicken response to MDV.
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Kamaludin, Kamaludin, P. W. Dzikrillah, M. F. Azhoheru, et al. "Manajemen usaha Ayam Pedaging Jantan dan Betina dengan Penambahan Suplemen Organik Cair." PETERPAN (Jurnal Peternakan Terapan) 1 (December 26, 2019): 21–25. http://dx.doi.org/10.25181/peterpan.v1i1.1476.

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This study aims to determine the growth of broiler chickens and analyze the feasibility of broiler farming with the addition of liquid organic supplements. Liquid organic supplements (SOC) or also called probiotics contain Lactobacillus sp, Azetobacter sp, Basiluss sp, vitamins, and minerals. SOC can increase antibodies, reduce stress levels, suppress the onset of disease, help stimulate appetite, and accelerate the growth of broiler chicken. Broilers are divided into 4 treatments female broilers without SOC, male broilers without SOC, female broilers with the addition of SOC, and treatment of male broilers with the addition of SOC. Based on the results and discussion the highest PBB is obtained by male chicken with SOC. Feasibility analysis shows that all treatments are feasible, B/C (3.11) and R/C (3.18) values of treatments added by SOC are higher than treatments without SOC.Keywords: Broiler, Feasibility Analysis, SOC
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Nurmi, Aisyah, Melia Afnida Santi, Nurainun Harahap, and Muharram Fajrin Harahap. "PERSENTASE KARKAS DAN MORTALITAS BROILER DAN AYAM KAMPUNG YANG DI BERI LIMBAH AMPAS PATI AREN TIDAK DIFERMENTASI DAN DIFERMENTASI DALAM RANSUM." JURNAL ILMIAH PETERNAKAN TERPADU 6, no. 3 (2019): 134. http://dx.doi.org/10.23960/jipt.v6i3.p134-139.

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The objectives of this research were to study the percentage of carcass of broiler and native chicken given arenga waste fermentation by Saccaromyces cerevisiae and to study arenga waste unfermentation in the ration. Sixty of broiler chickens Arbor Acres strain and sixty native chickens were divided into four dietary treatments and three replications (10 birds/replicate). The design of this experiment was completely randomized design factorial 2x2, with factor A was feeding (A1 : arenga waste unfermented, A2 : arenga waste fermented), and factor B was chicken species (B1:native chickens, B2:broilers). The variables observed were: (1) body weight, (2) carcass, (3) percentage of carcass, and (4) Mortality.The purposes of this study were to look at the effectiveness of rations and species of chicken used for the percentage of carcass and mortality. The results showed that there was no interaction (P> 0.05) between the fed arenga waste fermented or unfermented 2.5% in the ration,and the type of chicken on weight, carcass and carcass percentage, but there was an interaction on mortality (P<0.01). The fed had no significant (P>0,05) effect on weight, carcass, and carcass percentage, but percentage, but significant effect (P <0.05) on mortality. Types of chickens had a significant effect (P <0.05) on weight, carcass, percentage of carcass and mortality. The mortality rate with unfermented arenga waste was high enough, especially in broiler chickens, but it can be tolerated on native chicken and broilers with saccaromyces cerviseae fermented arenga waste. Keywords : Arenga Waste, Fermentation Arenga Waste, Native Chickens, Broiler
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Herlina, Herlina, La Ode Nafiu, and Muhammad Amrullah Pagala. "BOBOT TETAS DAN FERTILITAS PADA AYAM KAMPUNG DAN HASIL PERSILANGANNYA." Jurnal Ilmu dan Teknologi Peternakan Tropis 3, no. 3 (2016): 32. http://dx.doi.org/10.33772/jitro.v3i3.2566.

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This study aims to determine the performance of chicken and cross breeding results with laying hens and broilers. A total of 3 male chickens and 15 chickens Kampung females, 3 males laying chickens and 10 chickens laying females, and 3 chickens stud broiler. The variables observed were egg weight, fertility, hatchability, hatching weight. Data were analyzed with General Linear Model (GLM). Data on hatch weight, egg weight, fertility and hatchability were analyzed based on different breed. If there is a difference between treatments then a further test with Duncan Multiple Test is performed. The results showed that the performance of chicken and crossbreeding with laying and broiler chickens had significant effect (P <0,05) on egg weight, fertility, hatchability based on different nation and weight of hatch, body weight, heterosis and growth based on breed and different sex. Key Word : Performance, Crossbreeding, Kampung Chicken, Broiler, Layer.
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Sahraei, M. "Effects of feed restriction on metabolic disorders in broiler chickens: A review." Biotehnologija u stocarstvu 30, no. 1 (2014): 1–13. http://dx.doi.org/10.2298/bah1401001s.

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Continuous genetic selection and improvement in nutrition have led to a very fast growth rate in modern strains of broiler chickens. Metabolic disorders such as ascits, sudden death syndrome and leg problems are related to a rapid early growth rate in poultry, especially in broilers, and their incidence can be decreased by slowing early growth. The use of management tools to reduce metabolic disorders that rely primarily on decreasing feed consumption, The feed restriction programs is on of the main techniques in growth curve manipulation for increasing production efficiency in broiler chicken in alleviate the incidence of some metabolic disorders and can be used to reduction the unfavorable effects of fast growth rate in broiler chicken production industry, and could be profitable in broiler chickens production efficiency. This article implicated on new findings in about different feed restriction programs effects on these problems in broiler chickens.
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Farzana, N., M. Habib, MH Ali, MA Hashem, and MS Ali. "Comparison of meat yield and quality characteristics between indigenous chicken and commercial broiler." Bangladesh Veterinarian 34, no. 2 (2018): 61–70. http://dx.doi.org/10.3329/bvet.v34i2.49889.

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Yield and quality of meats from commercial broiler and indigenous chickens weighing one kg each were studied during different periods of refrigeration. The chicken carcasses were stored at -20oC for 30 days and were analyzed on 0, 15 and 30 days. Carcass weight (%), shank weight (%), dressing (%), breast meat yield (%) were higher (P<0.05) in commercial broilers, but head (%), neck (%), thigh meat (%), drumstick meat (%) were higher (P<0.01) in indigenous chickens. Shank weight (%) decreased with storage time. Higher (P<0.01) percentage of dry matter (DM) and crude protein (CP) were found in indigenous chicken breast meat, while ether extract (EE) and total ash content were higher (P<0.01) in commercial broiler breast meat. Cooking loss (%) was higher in commercial broiler breast meat. The pH and CP (%) decreased, while DM (%), EE (%), Ash (%), Thiobarbituric acid reactive substance (TBARS) value, free fatty acid (FFA) value, and Peroxide value (POV) increased with storage time in both types of chicken. Sensory evaluation showed more juiciness in commercial broiler meat.
 Bangl. vet. 2017. Vol. 34, No. 2, 61-70
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Suwarta, Suwarta, and Darmadji Darmadji. "PENGARUH MANAJEMEN USAHA DAN MUROTAL AL-QUR’AN SERTA FAKTOR EKONOMI TERHADAP PRODUKSI USAHA TERNAK AYAM BROLIER." JSEP (Journal of Social and Agricultural Economics) 13, no. 3 (2020): 273. http://dx.doi.org/10.19184/jsep.v13i3.18447.

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This study aims to determine: (1) the factors that influence the production of broiler chicken farming, (2) the effect of broiler chicken business management on production, and (3) the effect of murotal Al-Qur'an and other production factors on production. This research was conducted in Malang Regency, with the consideration that Malang Regency is one of the three (3) big broiler-producing districts in East Java. As the unit of analysis is primary data from interviews with broiler breeders who were selected as respondents. The analysis tool uses multiple linear regression models using the natural form (Ln). The results showed that: (1) The production of broiler chicken farming was positively influenced by the number of seeds, the amount of feed, business management, business capacity, murotal Al-Qur'an and the volume of business above the average. Broiler chicken production is negatively affected by the area of ​​the house, the number of dead chickens, and the number of abandoned chickens. Independent variables that do not affect the production of broiler chicken farming are the management of broiler chicken raising and the number of person working days (HKO). To increase production, it is necessary to increase the number of seeds, the amount of feed, optimize the area of ​​the cage, reduce the number of dead chickens, reduce the number of dead chickens, improve business management, increase business capacity, utilize murotal Al-Qur'an and with business volume above average.
 Keywords: Production, management, livestock business, murotal Al-Qur'an, broiler chickens
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Sahraei, M. "Feed restriction in broiler chickens production." Biotehnologija u stocarstvu 28, no. 2 (2012): 333–52. http://dx.doi.org/10.2298/bah1202333s.

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The feed restriction program is on of the main techniques in growth curve manipulation for increasing production efficiency in broiler chicken. Quantities and qualitative feed restriction are procedures that can be used to manipulate the feeding strategies of poultry in order to decrease growth and metabolic rate to some extent and so alleviate the incidence of some metabolic diseases such as ascites, lameness, mortality, and sudden death syndrome and so improving feed conversion and reducing feed cost. Also to produce a leaner bird and reduce the unfavourable effects of fat on human health, and to reduce fat deposition in broiler carcasses using of feed restriction programs can be profitable in broiler chickens production. This article surveys new findings in feed restriction of broilers and evaluates the application of feed restriction methods to broiler chicken production.
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Hidayat, Cecep, Komarudin ., and E. Wina. "Mitigation of Heat Stress in Broiler Chickens with Heat Shock Protein 70 Gene Expression as its Indicator." Indonesian Bulletin of Animal and Veterinary Sciences 30, no. 4 (2020): 177. http://dx.doi.org/10.14334/wartazoa.v30i4.2563.

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<p class="awabstrak2"><span lang="EN-US">Heat stress is an important issue in broiler chicken farms in tropical countries, such as Indonesia. Heat stress is very detrimental to broiler chickens because reducing production performance, health, and causing mortality. In the condition of heat stress, broilers synthesize Heat Shock Protein (HSP) quickly as the body's response to heat stress. HSP 70 is the most studied HSP group related to heat stress. The objective of this study was to review the nutritional approach that has been done to mitigate heat stress in broiler chickens with the HSP70 gene expression as its indicator. Based on some studies, nutritional approaches that can be taken are through the management of feed availability, supplementation of vitamin C, vitamin E, plant bioactives, amino acids (taurine and glutamine), probiotics, prebiotics, synbiotics, manan oligo saccharide (MOS) and minerals (selenium, zinc, manganese, chromium). By these approaches, HSP70 gene expression decreased indicating that the heat stress level of broiler chicken also reduced. It can be concluded that the nutritional approach can be used as a method for heat stress mitigation in broilers with the HSP70 gene expression indicator. </span></p>
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Podolian, Ju N. "Effect of probiotics on the chemical, mineral, and amino acid composition of broiler chicken meat." Ukrainian Journal of Ecology 7, no. 1 (2017): 61–65. http://dx.doi.org/10.15421/20178.

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<p>The experiment was conducted to examine the influence of probiotic preparation on the mineral contamination of the broiler chicken muscles. Investigational product contains probiotic lactic acid bacteria of genus Lactobacillus and Enterococcus. It is proved that additional feeding of probiotic “Entero-active” to broiler chickens increases retention of mineral elements of the fodder. To study the effect of probiotic on chicken meat the contamination of minerals in the experimental poultry meat was researched. The studies proved that the additional use of the studied probiotic supplements with food of broiler chickens allowed increasing phosphorus contamination by 4.7%, magnesium by 3.9% and iron by 46.5% in the pectoral muscles compared with the control group. The use of probiotic for broilers feeding has increased phosphorus by 4.7%, calcium by 4.1 times, iron by 70.5%, zinc by 5.4%, magnesium by 31.5% and copper in 4.2 times in thigh muscles of poultry. Thus, consumption of probiotic preparation by broilers in various doses improves the mineral compound of meat carcasses this meat is also considered as free range food. It was proved that probiotic increases the synthesis of such essential amino acids in the pectoral muscles as lysine by 1.66%, histidine by 0.03%, arginine by 0.38%, threonine by 0.07%, valine by 0.16%, methionine by 0.33%, leucine by 0.1% and phenylalanine by 0.17%. The increasing of level of lysine and histidine respectively by 0.05 and 0.08% is observed in the thigh muscles of broilers under the influence of probiotic. We have proved that the optimal dose for broiler chickens is 0.25% for the age of 1-10 days, 0.1% for the age of 11-28 days, 0.05 % for the age of 29-42 days, the percentage is for broiler chickens feed weight. </p>
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Dissertations / Theses on the topic "Chicken broiler"

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Molepo, Lephai Sarah. "Effect of moringa seed meal supplementation on productivity and carcass characteristics of ross 308 broiler chickens." Thesis, University of Limpopo, Turfloop Campus, 2014. http://hdl.handle.net/10386/1340.

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Thesis (MSc. Agriculture (Animal Production)) -- University of Limpopo, 2014<br>Two experiments were conducted to determine the effect of moringa seed meal supplementation on productivity and carcass characteristics of Ross 308 broiler chickens. The first experiment determined the effect of moringa seed meal supplementation on productivity of Ross 308 broiler chickens aged one to 21 days. Two hundred and fifty unsexed day-old Ross 308 broiler chicks were randomly allocated to five dietary treatments, replicated five times, and each replication having 10 chickens. A completely randomized design was used. The chickens were fed on a grower diet supplemented with 0 (M0), 5 (M5), 10 (M10), 15 (M15) and 20 (M20) g of moringa seed meal/bird/day. Moringa seed meal supplementation had no effect (P>0.05) on feed intake, metabolisable energy intake, nitrogen retention, feed conversion ratio and live weight of unsexed Ross 308 broiler chickens. Moringa seed meal supplementation improved (P<0.05) growth rates of unsexed Ross 308 broiler chickens aged one to 21 days. A moringa seed meal supplementation level of 13.3 g/kg DM feed optimized growth rate of Ross 308 broiler chickens aged one to 21 days. The second experiment determined the effect of moringa seed meal supplementation on productivity and carcass characteristics of female Ross 308 broiler chickens aged 22 to 42 days. The chickens weighing 558 ± 10 g/bird were randomly allocated to five treatments with five replications having 10 birds. The chickens, aged 21 days, were allocated to the treatments in a completely randomized design. The chickens were fed on a grower diet supplemented with 0 (FM0), 5 (FM5), 10 (FM10), 15 (FM15) and 20 (FM20) g of moringa seed meal per kg DM. Moringa seed meal supplementation had no effect (P>0.05) on feed intake, growth rate, feed conversion ratio, live weight, metabolisable energy intake, carcass weight, breast meat weight, abdominal fat pad weight, liver weight, heart weight, thigh weight, meat flavour, juiciness and tenderness of female Ross 308 broiler chickens. However, moringa seed meal supplementation improved (P<0.05) nitrogen retention and gizzard weights of female Ross 308 broiler chickens. vi It was concluded that moringa seed meal supplementation improved growth rate of unsexed Ross 308 broiler chickens aged one to 21 days. Similarly, moringa seed meal supplementation increased nitrogen retention and gizzard weights of female Ross 308 broiler chickens aged 22 to 42 days.
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Nagaraj, Manonmani. "Evaluation of nutrition and management factors in the etiology of pododermatitis in broiler chickens." Auburn, Ala., 2006. http://repo.lib.auburn.edu/Send%206-15-07/NAGARAJ_MANONMANI_39.pdf.

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Viñado, Martínez Alberto. "Use of soybean lecithin in broiler chicken diets." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/667795.

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La adición de grasas es una práctica habitual en la fabricación de piensos para avicultura, ya que son fuente de energía y ácidos grasos esenciales. La disponibilidad de ingredientes con alto contenido energético se puede ver reducida a causa del aumento de población mundial y la utilización de aceites vegetales para la producción de biodiesel. Por ello, la lecitina de soja (L), un coproducto del refinado del aceite de soja (S), puede ser una fuente de energía alternativa, ya que presenta un alto contenido en fosfolípidos, triacilgliceroles, ácidos grasos libres (AGL), fósforo, colina y compuestos antioxidantes. Por todo ello, el objetivo de la tesis fue estudiar el uso potencial de L como fuente de energía para piensos de pollos de carne. Para ello, se realizaron varios ensayos con el objetivo de estudiar el uso de L como fuente de energía en la alimentación de pollos y evaluar su influencia sobre el rendimiento productivo, digestibilidad de los ácidos grasos (AG), utilización de la energía y perfil de AG de la grasa abdominal. Una dieta base fue suplementada al 3% con S o aceite ácido (A), que fueron sustituidos por niveles crecientes (1%, 2% y 3%) de L (cruda o con alto contenido en AGL en el Capítulo Tres y Cuatro, respectivamente). En relación con la sustitución de S por L, aunque durante la fase de iniciación no se observaron efectos sobre el rendimiento productivo, los balances de digestibilidad demostraron que la incorporación de L disminuyó la digestibilidad de los AG y el contenido en energía metabolizable aparente del pienso. Sin embargo, en la fase de crecimiento-acabado, la sustitución parcial de L (hasta un 2%), no dio lugar a modificaciones en el rendimiento productivo ni la utilización de la energía y de AG. Respecto a la sustitución de A por L, tanto en fase de iniciación como en la de crecimiento-acabado, se observó que la combinación de ambos coproductos dio lugar a una mayor utilización de la energía y los nutrientes. Finalmente, el perfil de AG de la grasa abdominal estaba directamente relacionado con el perfil de AG del pienso, y no se observaron modificaciones importantes al sustituir S por L. En el último ensayo (Capítulo Cinco) se desarrolló una prueba de campo bajo condiciones experimentales con el objetivo de estudiar, diferentes niveles de inclusión de L en sustitución de S en dietas de pollos de crecimiento y de acabado, y su efecto sobre el rendimiento productivo. Además, se estudió el efecto sobre la digestibilidad ileal de los AG, el perfil de AG de la grasa abdominal y la salud intestinal. La sustitución total del S (2% de inclusión) por L, en dietas que también contenían aceite de palma y A (3,25% y 4,5% de grasas añadidas en crecimiento y acabado, respectivamente) no modificó el rendimiento productivo, la digestibilidad ileal de los AG totales y la morfología yeyunal. Por otro lado, se observó una reducción de la digestibilidad ileal de los AG poliinsaturados y un incremento en los recuentos de Lactobacillus spp. en yeyuno; aunque, sin consecuencias significativas sobre los parámetros productivos. El perfil de AG de la grasa abdominal reflejó el perfil de AG de las grasas, sin observarse importantes modificaciones. Como conclusiones podemos decir que L es una fuente de energía alternativa adecuada para pollos de carne en crecimiento y acabado, pudiendo sustituir S hasta un 2% sin alterar el rendimiento productivo, la utilización de energía y los AG. Además, la combinación L y A es una alternativa interesante para pollos adultos gracias a la existencia de interacciones positivas sobre la utilización de la energía y los AG.<br>Fat addition is a common practice in feed manufacturing in order to increase the energetic density of diets and provide essential nutrients to livestock animals. The availability of conventional energetic ingredients for broiler chicken diets may be compromised by a constant growing world-wide population and the current tendency to use vegetable oils for biodiesel production. In this context, soybean lecithin (L), as a co-product obtained during soybean oil (S) refining process, may represent an economical and alternative energy source due to its high content in phospholipids, triacylglycerols, free fatty acids (FFA), phosphorus, choline and antioxidant compounds. Therefore, the global aim of the present thesis was to investigate the potential use of L, as energy source for broiler chicken diets. Several trials were performed with the aim to evaluate the inclusion of L as energy source in broiler feeding and study its influence on performance, energy utilization, fatty acid (FA) digestibility and the FA profile of the abdominal fat pad. A basal diet was supplemented at 3% with either S or acid oil (A) and increasing amounts of L (crude and high in FFA for Chapter Three and Four, respectively) were included in replacement (1%, 2% and 3%). In relation to S replacement, despite no effects were observed on performance parameters, results from the digestibility balances indicated that S replacement by L, in starter broiler chickens, lowered FA digestibility and the apparent metabolizable energy content of the diets. However, in grower-finisher broiler chickens, partial replacements up to a 2%, did not modify performance, and the utilization of energy and total FA. Regarding the replacement of A by L, in starter and grower-finisher broiler chicken diets, it was observed that blending both co-products have resulted in improvements on energy and nutrient utilizations. Finally, the FA profile of the adipose tissue was a clear reflect of the FA composition of the added fats, and S replacement by L produced slight changes on the FA profile of the abdominal fat pad. The last experiment (Chapter Five) consisted in a field trial under experimental conditions with the main objective to study, in grower and finisher broiler chicken diets, different levels of L inclusion in replacement of S and its effects on growth performance. In addition, ileal absorption of FA, FA profile of the abdominal fat pad and gut health markers were assessed. Soybean oil total replacement by L (2% of inclusion), in diets that also contained palm and A (3.25% and 4.5% of total added fats for grower and finisher diets, respectively), did not modify performance parameters, total FA ileal digestibility and jejunal morphology. On the other hand, a reduction on the digestibility of the polyunsaturated FA and an increase on Lactobacillus spp. counts at the jejunum were linked to total replacement; however, with no significant consequences on growth efficiency. Slight modifications were observed on the saturation degree of the abdominal fat pad, associated to the FA profile of the different added fats. Taking all the results into account, it was evidenced that L is a suitable energetic ingredient for grower and finisher broiler chicken diets due to it was observed that S partial replacements up to a 2% by L do not alter growth performance and the utilization of energy and FA. Besides, the blending of L and A results an interesting option, for adult broiler diets, due the existence of positive interactions on energy and FA utilization.
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Rodríguez, Sánchez Raquel. "Use of acid oils in broiler chicken diets." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/666880.

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Los aceites ácidos son co-productos que derivan del proceso de refinación de los aceites para consumo humano (oleínas; aceites ácidos de refinación química y ácidos grasos destilados de refinación física). Se caracterizan por presentar un perfil en ácidos grasos (AG) similar al de los aceites crudos de los que derivan, pero se diferencian en su estructura molecular, ya que tienen un alto contenido en ácidos grasos libres (AGL), lo que puede afectar a su valor nutricional. El objetivo de la presente tesis es profundizar en el estudio de los procesos de digestión y absorción de la grasa en pollos de carne y determinar cómo se ven afectados por el nivel de saturación y nivel de AGL de la dieta y edad de los pollos. El primer ensayo (Capítulo 3) se llevó a cabo con el fin de evaluar el efecto del grado de saturación de la dieta y edad del pollo (14 d y 35 d) sobre los procesos de digestión y absorción de la grasa. Para ello se utilizaron dietas con un 6% de aceite crudo de soja y aceite crudo de palma. El segundo ensayo (Capítulos 4 y 5) se llevó a cabo para estudiar el efecto del nivel de AGL y grado de saturación de la dieta, así como también de la edad (14 d y 37 d) sobre los procesos de digestión y absorción de la grasa. Se utilizaron ocho dietas experimentales con dos grados de saturación (derivados del aceite de soja como fuente insaturada y del aceite de palma como fuente saturada) y cuatro niveles de acidez (5%, 15%, 35% y 50%). Para ello, se combinaron dos aceites crudos y dos co-productos ricos en AGL (oleínas). En ambos estudios se determinó la digestibilidad de los AG y el contenido en fracciones lipídicas a lo largo del tracto gastrointestinal (TGI; molleja, duodeno, yeyuno e íleon) y excreta. Los resultados demuestran que el yeyuno es el principal lugar de absorción de los AG y que la absorción está más afectada por la edad, grado de saturación y nivel de AGL de la dieta que la hidrólisis. La mayor utilización de las dietas insaturadas se confirmó tanto en pollos jóvenes como adultos y se relacionó con una mayor capacidad de absorción de los AG saturados a nivel del íleon. La mejora en la utilización de la grasa en pollos adultos se relacionó con una mayor absorción de los AG a nivel de yeyuno. Los resultados también evidencian que los pollos adultos (37 d) se vieron menos afectados por el nivel de AGL en la dieta que los pollos jóvenes (14 d), debido a que en los primeros la absorción de los AG a nivel de yeyuno fue más eficiente. Otro hallazgo interesante es que el aceite crudo de soja podría ser parcialmente reemplazado por el aceite ácido de soja de refinación química , cómo grasa alternativa, siempre y cuando no se supere el 15% y 35% de AGL en dietas de inicio y crecimiento-acabado, respectivamente. Por otro lado, no se observaron diferencias destacables entre los resultados obtenidos con dietas saturadas con 50% y 5% de AGL, lo que lleva a sugerir que el aceite ácido de palma (ácidos grasos destilados de refinación física de palma) podría reemplazar el aceite crudo de palma en dietas de crecimiento-acabado, al menos cuando no se supera el 50% de AGL de la dieta, sin que se produzcan repercusiones negativas sobre la utilización de la grasa de la dieta.<br>Acid oils, fat by-products from the edible oil refining industry, are rich in free fatty acids (FFA), have similar fatty acid (FA) composition to their respective crude oils, but different molecular structures, which can affect their nutritional value. The aim of the present thesis is to study in depth the digestion and absorption of fat in broiler chickens, and determine how the age of the chickens, the saturation degree and the FFA level of dietary fat affect these processes in order to raise recommendations on the use of oils with certain percentages of FFA in the diets with no negative repercussions on fat utilization. The first trial (Chapter 3) was conducted in order to study the effect of the dietary fat saturation degree and age (14 d and 35 d) on the fat digestion and absorption processes. For this purpose the dietary use of crude soybean oil and crude palm oil was studied. The second trial (Chapters 4 and 5) was conducted to assess the effect of the dietary FFA level, fat saturation degree and age (14 d and 37 d) on fat digestion and absorption processes. Two crude oils and two fat by-products from the edible oil refining industry rich in FFA were used in order to produce eight dietary treatments with two different saturation degrees (soybean oil products as unsaturated fat source, and palm oil products as saturated fat source), and four levels of dietary FFA (5%, 15%, 35%, and 50%). In both trials the FA digestibility and lipid class composition were determined along the gastrointestinal tract (GIT; gizzard, duodenum, jejunum, and ileum), and excreta. The results evinced that the absorption process mainly takes place in the jejunum, and is more affected than the hydrolysis process is by the saturation degree and free fatty acid level of dietary fat, as well as by the age of the chicken. The greater utilization of unsaturated diets irrespective of the age was confirmed, which was mainly due to the higher contribution of the ileum, especially to saturated FA absorption. The improvement on fat utilization in adult broiler chickens was due to an increase in the contribution of the jejunum to FA absorption. The results also evinced that adult broiler chickens (37 d) were less affected by the dietary FFA level than young broiler chickens (14 d) were due to a more efficient FA absorption at the jejunum level. Another interesting finding is that crude soybean oil could be partially replaced by acid soybean oil from chemical refining, being a good alternative fat source to be used in broiler chicken diets at least when the dietary FFA level does not exceed 15% and 35% in starter and grower-finisher diets, respectively. On the other hand, the saturated diet with 50% dietary FFA level did not differ from the saturated diet with the lowest dietary FFA level (5%), suggesting that acid palm oil (palm fatty acid distillate) could replace crude palm oil in grower-finisher diets, at least when the FFA level does not exceed 50% with no negative repercussions on fat utilization compared to the use of crude palm oil. Regardless of the age, it was concluded that the FA profile of dietary fat has a bigger impact on fat utilization than the level of dietary FFA.
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Jackson, Gillian. "Monoamine release and turnover in broiler chicken brain." Thesis, University of Bristol, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411086.

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Williams, Beverley Gail. "Aspects of bone quality in the broiler chicken." Thesis, University of Glasgow, 2000. http://theses.gla.ac.uk/6630/.

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The work contained in this thesis explores the development of the tibiotarsus shaft and the quality of cortical bone in the modern broiler, in relation to genetic background, growth rate and dietary mineral content. This was achieved through a series of experiments predominantly using a modern selected strain of broiler and an older, unselected control strain, and occasionally utilising current commercial stock. Birds were exposed to a variety of dietary mineral contents, and feeding regimes, and assessments were made of a number of aspects of bone quality, bone turnover, and mineral homeostasis at selected ages .A number of phases in tibiotarsus development were identified from the embryo through to slaughter age at approximately six weeks; these were seen in all strains of broiler chicken investigated. Resorption and replacement of the embryonic cartilage model of the tibiotarsus was found to begin before day 16 of incubation, and a reduction in cortical thickness was observed between this age and hatch as the marrow cavity was enlarged. During this period, the cortex was observed to develop from a maze like scaffold, to display recognisable Haversian canals with the new bone being rapidly mineralised; by day 6, the cortex displayed a distinctive pattern of Haversian canals which remained consistent throughout much of the bird's life-span. From hatch, cortical width began a rapid increase in thickness, which was seen to halt at approximately 18 days of age, cortical thickness remaining approximately constant from this age. The rapid increase in cortical mineral content was also seen to plateau at approximately 11 days.
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Kaminskienė, Jurga. "Mineralinių medžiagų panaudojimas dėsliųjų vištų ir viščiukų broilerių mityboje." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080317_134022-62942.

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Per pastaruosius 20 metų daug pasiekta auginant viščiukus broilerius – ženkliai padidėjo viščiukų augimo greitis ir maisto pasisavinimo efektyvumas. Šiuolaikiniai komerciniai hibridai greitai vystosi ir jiems reikia daug energijos turinčių lesalų, kurie leidžia maksimaliai išnaudoti jų genetines galimybes. Daugiau pasiekta ir vištų dedeklių lesinime balansuojant lesalus skirtingais dėslumo etapais, ypač ankstyvojo dėjimo periodu. Pastaruoju metu paukščių lesinime didelis dėmesys skiriamas optimaliam kalcio, fosforo, natrio, kalio ir chloro subalansavimui. Parinkus netinkamas kalcį ir fosforą nešančias medžiagas, taip pat nesubalansavus natrio, kalio ir chloro tarpusavio santykio, t.y. anijonų katijonų balanso, padidėja vandens suvartojimas, sutrinka virškinimo trakto mikrobiologinė pusiausvyra, blogėja kraiko kokybė ir mikroklimato parametrai, susidaro sąlygos paukščiams susirgti ascitais, padaugėja paukščių staigių gaišimo atvejų. Vitaminai ir mineralai yra svarbi sudedamoji paukščių raciono dalis. Šios medžiagos įtraukiamos į racioną kaip priedai atitinkamais kiekiais, kad būtų patenkintas jų poreikis sveikiems produkciją duodantiems paukščiams. Mineralų ir vitaminų trūkumas gali būti kritiškas tam tikrais organizmo vystymosi etapais, todėl kai kurie autoriai teigia, kad net ir trumpas vitaminų bei mineralų apribojimas augimo fazės metu gali turėti neigiamų pasekmių. Magistrinio darbo tikslas – nustatyti mineralinių medžiagų įtaką dėsliųjų vištų ir viščiukų broilerių... [toliau žr. visą tekstą]<br>Minerals play a very important role in digestion and metabolism of poultry. They are necessary, for the maintenance, growth, production and health of birds. Laying hens also require minerals, primarily calcium, for eggshell formation. Minerals is divided into the macrominerals (those needed in relatively large amounts) and the micro- or trace minerals. Although microminerals are required only in small amounts, the lack of an adequate dietary supply can be just as detrimental to poultry as a lack of one of the macrominerals. Grains are low in minerals, so all poultry feeds contain supplemental sources. Calcium, phosphorus and salt are needed in the greatest amounts. Microminerals such as iron, copper, zinc, manganese and iodine are normally supplied through a trace mineral mix. The minerals influence by the bird‘s physiological status, requirement of minerals and its source is describe in the theory part. Two experiment were performed with broiler chickens and laying hens. The feed intake, feed conversion ratio, birds mortality, the degree of mineralization in the bone tibia, pH, macroelements Ca, P, Mg, Na, K, Cl and alkaline phosphatase in the blood serm were researched in experiment of broiler chickens. Number and weight of eggs, body weight, laying intensity, leftover and utilization of feed to get 1 kg eggs mass, quality parameters of eggshells, the physiological conditions and mortality reasons were researched in test of laying hens. Conclusions. Sodium bicarbonate was... [to full text]
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Owens, B. "Alternatives to antibiotic growth promoters for broiler chicken production." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411368.

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Karlsson, Louise. "The Rowan Ranger Chicken Breed - a Suitable Alternative for the Organic Chicken Meat Industry." Thesis, Linköpings universitet, Biologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-129085.

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The only available broiler strain to use in organic chicken meat production, until recently, has been conventional fast growing broiler hybrids. The Rowan Ranger is a broiler strain that has a naturally slower growth rate which makes this strain suitable for organic farming, meeting the demands of KRAV without being subjected to a feed restriction. One of the farms in Sweden using Rowan Ranger in their organic production is Bosarp farm in Skåne County where they produce KRAV certified chickens and where the animals used in this study were raised. This study compared differences between a naturally slow growing strain of chicken to a fast growing strain to see whether there were differences in behaviour between the two, if one of the strains was more susceptive to stress than the other and whether they differed in outdoor use and activity level. Regardless of strain, chickens used the outdoor perimeter the same, although the Rowan Rangers did not range as far from the chicken house as Ross 308. Even so, they seem to be more suitable in an organic setting than Ross 308 due to the fact that they seem less hungry and more content, this based on the fact that they perform less feeding behaviour and spend more time laying down. Also, they grow nicely to slaughter weight with a good diet quality whereas Ross 308 need to be qualitative feed restricted to do the same, giving the Rowan Rangers better welfare.
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Mafiri, Matseko Nkele. "Effect of supplementing diets with effective microorganisms on intake, growth and carcass characteristics of ross 308 broiler chickens." Thesis, University of Limpopo, 2014. http://hdl.handle.net/10386/1390.

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Thesis (M.Sc. (Animal Production)) -- University of Limpopo, 2014<br>Two experiments were conducted to determine the effects of supplementing diets with effective microorganisms on intake, growth and carcass characteristics of Ross 308 broiler chickens. The first experiment determined the effect of supplementing diets with effective microorganisms on performance of unsexed Ross 308 broiler chickens aged one to three weeks. Two hundred unsexed day-old chicks were randomly assigned to five treatments with four replications, each replication having ten birds. A complete randomized design was used. The chickens were fed a grower diet supplemented with 0 (EM0), 30 (EM30), 50 (EM50), 70 (EM70) or 100 (EM100) ml of effective microorganisms per litre of water. Effective microorganism supplementation did not improve (P>0.05) diet and metabolisable energy intakes of the chickens. Effective microorganism supplementation reduced (P<0.05) growth rate and live weight of the chickens. Poorer (P<0.05) feed conversion ratios were observed in chickens supplemented with effective microorganisms. However, effective microorganism supplementation improved (P<0.05) crude protein retention of the chickens. Supplementation with effective microorganisms reduced (P<0.05) mortality rate of the chickens from 10 to 0 %. The second experiment determined the effect of supplementing diets with effective microorganisms on performance of male Ross 308 broiler chickens aged 22 to 42 days. The chickens were randomly allocated to five treatments with four replications, each replication having 10 birds. The chickens aged 21 days, weighing 474 ± 2g, were allocated to the treatments in a complete randomized design. The chickens were fed a grower diet supplemented with 0 (EMM0), 30 (EMM30), 50 (EMM50, 70 (EMM70) or 100 (EMM100) ml of effective microorganisms per litre of water. Effective microorganism supplementation did not improve (P>0.05) intake, DM digestibility, metabolisable energy, feed conversion ratio, fat pad weight and meat sensory attributes of the chickens. Effective microorganism supplementation reduced (P<0.05) growth rate, live weight and carcass weight of the chickens. However, effective microorganism supplementation improved (P<0.05) crude protein retention and crude protein content of meat of the chickens. Supplementation with effective microorganisms reduced (P<0.05) mortality of the chickens from 5 to 0 %. v It is concluded that effective microorganism supplementation to the diets of Ross 308 broiler chickens reduced growth rate and live weight of the chickens. However, effective microorganism supplementation improved crude protein retention and crude protein content of the meat of broiler chickens. Supplementation with effective microorganisms reduced mortality of the chickens to zero.
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Books on the topic "Chicken broiler"

1

Martinez, Steve. Vertical coordination in the pork and broiler industries: Implications for pork and chicken products. U.S. Dept. of Agriculture, Economic Research Service, 1999.

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Martinez, Steve. Vertical coordination in the pork and broiler industries: Implications for pork and chicken products. U.S. Dept. of Agriculture, Economic Research Service, 1999.

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International Poultry Broiler Nutritionists' Conference (2nd 2001 Rotorua, N.Z.). Poultry beyond 2005: Carving a great future : proceedings of the 2nd International Poultry Broiler Nutritionists' Conference, Rotorua, New Zealand, February 2001. Published jointly by the Poultry Industry Association of New Zealand and the New Zealand Institute for Crop & Food Research, 2001.

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Berndtson, Eva. Campylobacter in broiler chickens: The mode of spread in chicken flocks with special reference to food hygiene. Sveriges Lantbruksuniversitet, 1996.

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Chohan, Amrit K. Nutritional evaluation of different varieties of full-fat soybeans in broiler chicken starter diets. University of Prince Edward Island, 1991.

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Chohan, Amrit K. Nutritional evaluation of different varieties of full-fat soybeans in broiler chicken starter diets. National Library of Canada, 1991.

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Martinez, Steve. Price and quality of pork and broiler products: What's the role of vertical coordination? U.S. Dept. of Agriculture, Economic Research Service, 2000.

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Cross, Deborah Elaine. Phytochemical and enzyme supplementation of broiler chicken diets and effects on intestinal microflora, nutrient utilisation and performance: PhD Thesis. University of Glasgow, 1995.

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Gubanov, A. G. Ėkonomika proizvodstva mi͡a︡sa, t͡s︡ypli͡a︡t-broĭlerov na Severnom Kavkaze. Izd-vo Rostovskogo universiteta, 1988.

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Leeson, Steven. Broiler breeder production. Nottingham University Press, 2009.

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Book chapters on the topic "Chicken broiler"

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Coon, Craig N. "Broiler Nutrition." In Commercial Chicken Meat and Egg Production. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0811-3_16.

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Lacy, Michael P. "Broiler Management." In Commercial Chicken Meat and Egg Production. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0811-3_43.

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Coon, Craig N. "Feeding Broiler Breeders." In Commercial Chicken Meat and Egg Production. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0811-3_19.

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Bell, Donald D. "A Model Integrated Broiler Firm." In Commercial Chicken Meat and Egg Production. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0811-3_42.

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Simm, Geoff, Geoff Pollott, Raphael Mrode, Ross Houston, and Karen Marshall. "Poultry breeding." In Genetic improvement of farmed animals. CABI, 2021. http://dx.doi.org/10.1079/9781789241723.0366.

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Abstract In this chapter, the major breeding goals for each of the poultry products (eggs and meat) are discussed. An outline on how the breeding and selection methods have been developed appropriately on chicken meat (broiler) and chicken egg sectors was also presented.
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Abioja, M. O., and J. A. Abiona. "Impacts of Climate Change to Poultry Production in Africa: Adaptation Options for Broiler Chickens." In African Handbook of Climate Change Adaptation. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_111.

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AbstractGlobal climate change poses a great threat to poultry production. Greenhouse gases (GHGs) are released through both natural and anthropogenic sources into the atmosphere. Though poultry production contributes little to the release of GHGs, the subsector has been shown to be greatly affected by climate change and global warming. Poultry production as a major subsector of agriculture has provided the teeming population with a supply of needed animal protein in terms of meat and egg production all over the world. It is yet a major global employer of labor. Though it occupies a vantage position in meeting human needs, it is being threatened by climate change, especially in Africa where necessary structure to tackle the menace is nonexistent. Broiler chickens that are reared mainly for chicken meat cannot tolerate the high ambient temperature that prevails mostly in the tropical environment. Chickens are homeotherms that homeostatically regulate core body temperature within a narrow range. Elevated ambient temperature above thermal comfort zone, such as envisaged in climate change scenarios, will trigger series of neuroendocrine modulations that are detrimental to the welfare and productivity in broiler chickens. Such birds are said to be undergoing heat stress (HS). Negative effects of HS include reduced feed consumption, growth rate, feed digestion and efficiency, immunity, welfare, and survivability. Various adaptive measures that could be harnessed by broiler farmers, ranging from housing, feeding, watering, stocking, breeding for thermo-tolerant strains, thermal conditioning, use of phytochemicals, and much more, are reviewed upon in this chapter.
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Alali, Walid Q., and Charles L. Hofacre. "Preharvest Food Safety in Broiler Chicken Production." In Preharvest Food Safety. ASM Press, 2018. http://dx.doi.org/10.1128/9781555819644.ch4.

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Shimokomaki, Massami, Elza I. Ida, Adriana L. Soares, et al. "Animal Welfare and Meat Quality: Methodologies to Reduce Pre-slaughter Stress in Broiler Chicken." In Global Food Security and Wellness. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-6496-3_16.

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Fontana, I., E. Tullo, and A. Butterworth. "5.3. The use of vocalisation sounds to assess responses of broiler chicken to environmental variables." In Precision livestock farming applications. Wageningen Academic Publishers, 2015. http://dx.doi.org/10.3920/978-90-8686-815-5_5.3.

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He, Wenliang, Peng Li, and Guoyao Wu. "Amino Acid Nutrition and Metabolism in Chickens." In Advances in Experimental Medicine and Biology. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-54462-1_7.

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AbstractBoth poultry meat and eggs provide high-quality animal protein [containing sufficient amounts and proper ratios of amino acids (AAs)] for human consumption and, therefore, play an important role in the growth, development, and health of all individuals. Because there are growing concerns about the suboptimal efficiencies of poultry production and its impact on environmental sustainability, much attention has been paid to the formulation of low-protein diets and precision nutrition through the addition of low-cost crystalline AAs or alternative sources of animal-protein feedstuffs. This necessitates a better understanding of AA nutrition and metabolism in chickens. Although historic nutrition research has focused on nutritionally essential amino acids (EAAs) that are not synthesized or are inadequately synthesized in the body, increasing evidence shows that the traditionally classified nutritionally nonessential amino acids (NEAAs), such as glutamine and glutamate, have physiological and regulatory roles other than protein synthesis in chicken growth and egg production. In addition, like other avian species, chickens do not synthesize adequately glycine or proline (the most abundant AAs in the body but present in plant-source feedstuffs at low content) relative to their nutritional and physiological needs. Therefore, these two AAs must be sufficient in poultry diets. Animal proteins (including ruminant meat &amp; bone meal and hydrolyzed feather meal) are abundant sources of both glycine and proline in chicken nutrition. Clearly, chickens (including broilers and laying hens) have dietary requirements for all proteinogenic AAs to achieve their maximum productivity and maintain optimum health particularly under adverse conditions such as heat stress and disease. This is a paradigm shift in poultry nutrition from the 70-year-old “ideal protein” concept that concerned only about EAAs to the focus of functional AAs that include both EAAs and NEAAs.
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Conference papers on the topic "Chicken broiler"

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Kuevda, T. A., and P. S. Ostapchuk. "Effect of Satureja montana essential oil on growth performance of broiler chickens." In CURRENT STATE, PROBLEMS AND PROSPECTS OF THE DEVELOPMENT OF AGRARIAN SCIENCE. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-2020-5-9-10-133.

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To study the effect of Satureja montana essential oil on the performance of broiler chicken was the primary aim of this research. In the course of the studies, the highly reliable effectiveness of the mountain savory essential oil was noted. Broiler chickens weight increase before slaughter was 9.7 (p≤ 0.01) –11.0% (p≤ 0.001). Red blood cell (RBC) and white blood cell (WBC) counts showed a significant (p≤0.05) increase in the erythrocyte content by 18.2 % (to 3.47±0.09 cells per liter) in chickens of the experimental group that received Satureja montana essential oil without dilution.
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Niyonshuti, Eric, and Figen Kırkpınar. "Assessment of the Last Decades Studies and Developments in Broilers Nutrition." In International Students Science Congress. Izmir International Guest Student Association, 2021. http://dx.doi.org/10.52460/issc.2021.003.

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The poultry industry has advanced remarkably over the past 30 years. In particular, broiler production has been the most successful than any other sector in the animal industry. Production standards of broilers have continuously improved over this period, with modern broilers reaching a live average weight of 2.5 kg at 33 – 35 days. Today, under normal conditions, a broiler chicken can gain an average weight of 65 g per day and can attain 1.5 feed conversion ratio (FCR). Genetic selection brought about by breeding companies has played a big part in the improvements of broiler growth, and advances in nutritional management have provided about 10 to 15% of these changes. In conclusion, future broiler nutrition studies are going to be continued on the plane of economic criteria, determination of alternative feedstuffs and their cultivation, production of new feed additives, sustainability, and food or product quality. However, broiler nutrition studies are expected to contain not only pure and applied nutrition but also to answer and to enlighten some discussed issues such as to support animal welfare, consumer health, and ecological equilibrium. In this review, the latest improvements in feed formulation with much attention on metabolizable energy (ME) and crude protein (CP), feeding systems and feed presentation, use of feed additives to enhance feed use and broiler performance are discussed.
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Curtin, Ryan R., Wayne Daley, and David V. Anderson. "Classifying broiler chicken condition using audio data." In 2014 IEEE Global Conference on Signal and Information Processing (GlobalSIP). IEEE, 2014. http://dx.doi.org/10.1109/globalsip.2014.7032300.

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Gustian, Dudih, Agus Darmawan, Muhamad Ikhsan Tohir, Dedi Supardi, Siti Nurjanah, and Anggy Pradifta Junfihrana. "Selecting Quality Broiler Chicken using Data Mining Technique." In 2019 International Conference on ICT for Smart Society (ICISS). IEEE, 2019. http://dx.doi.org/10.1109/iciss48059.2019.8969819.

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Rukmini, Ni Ketut, Ni Ketut Mardewi, and I. Gusti Seri Rejeki. "Characteristics of Broiler Chicken Meat Given with Fermented Bean Sprouts Ration." In Proceedings of the 3nd Warmadewa Research and Development Seminar, WARDS 2020, 21 December 2020, Denpasar-Bali, Indonesia. EAI, 2021. http://dx.doi.org/10.4108/eai.21-12-2020.2305849.

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Liani, Yuli Afril, Ibnu Rasyid Munthe, Deci Irmayani, et al. "The Broiler Chicken Coop Temperature Monitoring Use Fuzzy Logic and LoRAWAN." In 2021 3rd International Conference on Electronics Representation and Algorithm (ICERA). IEEE, 2021. http://dx.doi.org/10.1109/icera53111.2021.9538771.

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Dumbrava, Camelia. "MINERALS PROFILE OF SOME BROILER CHICKEN TISSUES AND ORGANS CONSECUTIVE SELENIUM INTAKE." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/61/s25.107.

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D C Cassuce, I F deFatima Tinoco, K R. A Inoue, M M Bueno, A L Grana, and B F Tinoco. "Effects of Different Diets on the Ammonia Concentration in Broiler Chicken Facilities." In Livestock Environment VIII, 31 August - 4 September 2008, Iguassu Falls, Brazil. American Society of Agricultural and Biological Engineers, 2008. http://dx.doi.org/10.13031/2013.25516.

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Susanty, A., N. B. Puspitasari, R. Purwaningsih, and A. R. R. Siregar. "Sustainability Assessment of Contract Farming Broiler Chicken Supply Chain Using Rap-Poultry." In 2020 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM). IEEE, 2020. http://dx.doi.org/10.1109/ieem45057.2020.9309842.

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Ataei, Abdol Hossain, and Figen Kırkpınar. "Application of In-Ovo Injection of Some Substances for Manipulation of Sex and Improving Performance in Chicken." In International Students Science Congress. Izmir International Guest Student Association, 2021. http://dx.doi.org/10.52460/issc.2021.006.

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In intensive production, freshly hatched cockerels are culled in the layer hatchery (7 billion males each year), On the other hand, for meat production rearing female birds has not economic benefits because of male broiler chicks have a faster growth rate and better feed efficiency than females. In this regards several methods are being developed for sex determination in the chick embryo during the incubation period. But these methods need to be rapid, cost-efficient, and suitable practical for commercial use. Additionally, sex determination should be done before pain perception has evolved in chick embryos. Biotechnology by in ovo technique to sex determination of between male and female chicks or sex reversal could improve production and eliminate ethical dilemmas for poultry industries. In birds, the differentiation of embryonic gonads is not determined by genetic gender with the certainty that occurs in mammals and can be affected by early treatment with a steroid hormone. During the development of the chick embryo, the genotype of the zygote determines the nature of the gonads, which then caused male or female phenotype. The differentiation of gonads during the period called the "critical period of sexual differentiation" is accompanied by the beginning of secretion of sexual hormones. Namely, any change in the concentration of steroid hormones during the critical period affects the structure of the gonads. Many synthetic anti-aromatases such as federazole and non-synthetic in plants, mushrooms, and fruits containing natural flavonoids have been used in the experiments in ovo injection of anti-aromatase had no negative effect on the growth performance of sexual reversal female chickens. In conclusion, administration of an aromatase inhibitor causes testicular growth in the genetic female gender, and estrogen administration leads to the production of the left ovotestis in the genetic male gender. Therefore, in the early stages of embryonic development, sexual differentiation can be affected by changing the ratio of sexual hormones. In this review, effects of some substances applied by in ovo injection technique on sex reversal and performance in chicks.
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Reports on the topic "Chicken broiler"

1

Olsen, Thomas, and Lyle T. Rossiter. Organic Broiler Chicken Production Trial–Allee Farm. Iowa State University, Digital Repository, 2001. http://dx.doi.org/10.31274/farmprogressreports-180814-1047.

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Rossiter, Lyle T. Organic Broiler Chicken Production Trial Allee Farm, 2001. Iowa State University, Digital Repository, 2002. http://dx.doi.org/10.31274/farmprogressreports-180814-102.

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Wagner, Cole, and Kristjan Bregendahl. Effect of Dietary Salmon Protein Concentrate on Growth Performance of Broiler Chickens. Iowa State University, 2007. http://dx.doi.org/10.31274/ans_air-180814-639.

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Souza da Silva, C., and I. C. de Jong. Literature update on effective environmental enrichment and light provision in broiler chickens. Wageningen Livestock Research, 2019. http://dx.doi.org/10.18174/504630.

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Du, M., and Dong U. Ahn. Dietary Conjugated Linoleic Acid (CLA) Effects Lipid Metabolism in Broiler Chicks. Iowa State University, 2004. http://dx.doi.org/10.31274/ans_air-180814-1041.

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Wang, Chunkao, David Habier, Anna Wolc, et al. Application of Genomic Selection Using an Evenly Spaced Low-density Marker Panel in Broiler Chickens. Iowa State University, 2013. http://dx.doi.org/10.31274/ans_air-180814-1250.

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Wang, Chunkao, David Habier, Dorian J. Garrick, et al. Accuracy of Genomic EBV Using an Evenly Spaced, Low-density SNP Panel in Broiler Chickens. Iowa State University, 2011. http://dx.doi.org/10.31274/ans_air-180814-985.

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Du, M., K. C. Nam, S. J. Hur, H. Ismail, Y. H. Kim, and Dong U. Ahn. Quality Characteristics of Irradiated Chicken Breast Rolls from Broilers Fed Different Levels of Conjugated Linoleic Acid. Iowa State University, 2004. http://dx.doi.org/10.31274/ans_air-180814-1035.

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Murugesan, G. Raj, Brian J. Kerr, and Michael E. Persia. Evaluation of Energy Values of Various Oil Sources when Fed to Broiler Chicks. Iowa State University, 2013. http://dx.doi.org/10.31274/ans_air-180814-815.

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Hanson, Matie N., and Michael E. Persia. Effects of Dietary Soy Inclusion on Broiler Chick Performance and Metabolizable Energy. Iowa State University, 2014. http://dx.doi.org/10.31274/ans_air-180814-1180.

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