Academic literature on the topic 'Chicken - Growth promoters'
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Journal articles on the topic "Chicken - Growth promoters"
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Castro, Renata Lima, Lidiana de Siqueira Nunes Ramos, João Batista Lopes, Diego da Paz Carvalho, Tadeu Sampaio Carneiro, Tatiane Menezes Brandão, Silvana Maria de Medeiros Sousa Silva, and Dorinha Mirian Silber Schmidt Vitti. "Growth-promoters utilization in diet for broilers chicken." Proceedings of the British Society of Animal Science 2007 (April 2007): 246. http://dx.doi.org/10.1017/s1752756200021499.
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In the productive chain of broiler chicken the sanitary problems are minimized with the use of alimentary additives. The official Brazilian Health Department has established criteria for the use of antibiotic in broilers chicken diet and the use of probiotics, prebiotics and simbiotics has increased (Miltenburg, 2000). This paper was developed to evaluate the effect of different growth-promoters in diet for broilers chickens from 1 to 21 days age on weight gain, feed intake and feed conversion and to study the economic viability of addition of those promoters.
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Burt, D. W., I. R. Paton, and B. R. Dey. "Comparative analysis of human and chicken transforming growth factor-β2 and -β3 promoters." Journal of Molecular Endocrinology 7, no. 3 (December 1991): 175–83. http://dx.doi.org/10.1677/jme.0.0070175.
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ABSTRACT The promoters for chicken transforming growth factor-β2 (TGF-β2) and TGF-β3 were cloned and sequenced to study the regulation of these genes. The promoters are GC-rich and lie within CpG islands. Several putative DNA regulatory sequence motifs were identified in the 5′-flanking regions, including matches to particular recognition sequences for several nuclear factors found in other genes. A comparison of chicken and human TGF-β2 promoters revealed a 111 bp conserved sequence surrounding the major transcription start site. Two regions of sequence homology were detected in the 5′-flanking regions of chicken and human TGF-β3 genes: an 86 bp sequence surrounding the major transcription start and a 156 bp sequence in the 5′-untranslated region. No DNA sequence homology was detected between TGF-β1, -β2 or -β3 promoters. The conserved region near the major transcription start sites in both the TGF-β2 and TGF-β3 genes, however, does show some structural homology; both promoters contain short conserved sequences that resemble TATA box, cyclic AMP-responsive element and AP-2 sequence motifs, cis-acting elements we believe may be important for promoter activity.
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Untari, Tri, Okti Herawati, Marla Anggita, Widya Asmara, Agnesia Endang Tri Hastuti Wahyuni, and Michael Haryadi Wibowo. "The Effect of Antibiotic Growth Promoters (AGP) on Antibiotic Resistance and the Digestive System of Broiler Chicken in Sleman, Yogyakarta." BIO Web of Conferences 33 (2021): 04005. http://dx.doi.org/10.1051/bioconf/20213304005.
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Chicken is a major source of animal protein consumption in Indonesia. The problem facing the poultry industry is the incidence of resistance which increases mortality of the chicken production. One of the causes of resistance case is the use of antibiotics in feed additives. The public understanding about the effects of the use of antibiotic growth promoters (AGP) in chickens in antibiotic resistance and the digestive tract of chicken needs to be done to avoid the impact on economic losses and health problems. This study aims to provide an understanding of the effects of the use of antibiotic growth promoters (AGP) on antibiotic resistance and the digestive tract of broiler chickens. This study was carried out at a broiler chicken farm in Sleman, Yogyakarta. Based on the histopathological result of the digestive tract of chickens that were given antibiotics as AGP, there was no inflammation occurs, but the administration of antibiotics caused antibiotic resistance in various type of antibiotics including tetracycline (90% resistance), streptomycin (60% resistance), amoxicillin (50% resistance), erythromycin (80% resistance), and no resistance for gentamycin.
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Peric, L., D. Zikic, and M. Lukic. "Application of alternative growth promoters in broiler production." Biotehnologija u stocarstvu 25, no. 5-6-1 (2009): 387–97. http://dx.doi.org/10.2298/bah0906387p.
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Subsequent to banning of use of antibiotics as growth promoter sin poultry nutrition, numerous studies turned to finding of alternative solutions, i.e. other, natural substances, which would have positive effect on chicken growth and feed conversion. Today, several groups of these additives are in use, and most often probiotics, prebiotics, enzymes, acidifiers, antioxidants and phytogene additives. Considering that each of the stated groups has its own specificities, objective of this work was to present main mechanism of their action and to present their effect on production results in fattening of broiler chickens through review of research published in this field.
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Barros, Victor Ramos Sales Mendes de, Geraldo Roberto Quintão Lana, Sandra Roselí Valerio Lana, Ângela Maria Quintão Lana, Fabio Sales Albuquerque Cunha, and João Virgínio Emerenciano Neto. "β-mannanase and mannan oligosaccharides in broiler chicken feed." Ciência Rural 45, no. 1 (October 10, 2014): 111–17. http://dx.doi.org/10.1590/0103-8478cr20131544.
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The study aimed to evaluate the use of β-mannanase and mannan oligosaccharides (MOS) to replace growth promoters in broiler diets. Four hundred male Cobb broiler chicks were used, with initial weight of 45±1g, distributed in a completely randomized design with five treatments and eight repetitions of ten birds. The treatments were: basal feed; basal feed without growth promoter; basal feed without growth promoter + β-mannanase; basal feed without growth promoter + MOS; and basal feed without growth promoter + β-mannanase + MOS. The feed intake of the birds increased in response to dietary treatments compared to basal diet during the period 1-21 days of age. A higher weight gain and improved feed conversion was found at 42 days of age among birds that had received the basal diet without growth promoter + MOS. The absolute weight at slaughter, relative carcass and prime cuts except breast weights improved in response to dietary treatments compared to the basal diet at 42 days of age. No difference was observed in relative weight of the liver, while significant differences were found in the weight of heart, gizzard, and abdominal fat. It was concluded that β-mannanase and MOS can replace the growth promoters in broiler diets without compromising production and economic performance. However, the association of these products into the feed may cause negative interaction that reduces the broiler chickens' performance
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Idowu, K. R., O. A. Adeyemi, O. O. Oni, and O. M. Sogunle. "Evaluation of antibody titers of Noiler chickens fed with different biotic additive against Newcastle disease." Nigerian Journal of Animal Production 47, no. 3 (December 17, 2020): 44–49. http://dx.doi.org/10.51791/njap.v47i3.135.
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Immunity plays a key role in maintaining animal health, and thereby helps to enhance performance in livestock. The focus of alternative antibiotic growth promoters (prebiotic, probiotic, and symbiotic) strategies has been to prevent proliferation of pathogenic pathogen and to improve the immune status and performance of livestock. Atotal of 360, day old Noiler chickens were randomly distributed into 12 treatments with 3 replicates of 10 birds each. Experimental treatments consisted of 4 different growth promoters (probiotic, prebiotic, symbiotic and antibiotic) at 3 inclusion rates (0, 0.5 and 1g) into kg of feed respectively. The chickens were reared for a period of 42 days to evaluate the titer value of the bird fed with different growth promoters (prebiotic, probiotic, symbiotic and oxytetracycline antibiotic). The results obtained revealed significant differences in (P<0.05) in the Newcastle disease titer value of birds fed with different growth promoters with prebiotic having the best value (4.67), followed by symbiotic (4.55) and the inclusion of growth promoters at 1g into a kg of feed were significantly improved for prebiotic (6.00) and symbiotic (5.60) as compared to 0.5 and 0 g level of inclusion across the biotic additives. Hence it could be concluded that inclusion of prebiotic improved the Newcastle disease titer value of Noiler chicken at 1g/kg of feed.
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Adaszyńska-Skwirzyńska, Michalina, and Danuta Szczerbińska. "Use of essential oils in broiler chicken production – a review." Annals of Animal Science 17, no. 2 (May 1, 2017): 317–35. http://dx.doi.org/10.1515/aoas-2016-0046.
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Abstract Biological activity of volatile plant metabolites is the property that can potentially find application in animal nutrition. Nowadays, the use of bioactive compounds is encouraged in many areas of industry and agriculture, since these substances have similar properties as withdrawn antibiotic growth promoters. Meat poultry production is focused on the maximization of performance parameters, namely rapid chicken growth with low feed consumption, and with the optimum health status of the flock. Essential oils can stimulate the growth and functioning of the body, which translates into both chicken’s health and enhanced production parameters. The substances are characterized by a range of effects, are easily biodegradable, and do not usually require a waiting period - hence they can be used in breeding broiler chickens. Given the increasing restrictions imposed on poultry production in terms of food safety and ethical aspects of husbandry, it seems appropriate to look for the use of new, natural substances to be applied in animal production. The article presents the characteristics of essential oils in this context, with a particular focus on their antimicrobial and immunostimulatory properties. The paper also describes production applications of essential oils tested in experiments on hybrid Ross 308 and Cobb 500 chickens.
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Babak, Darabighane, and Samuel N. Nahashon. "A Review on Effects of Aloe Vera as a Feed Additive in Broiler Chicken Diets." Annals of Animal Science 14, no. 3 (July 29, 2014): 491–500. http://dx.doi.org/10.2478/aoas-2014-0026.
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AbstractProhibition of application of antibiotic growth promoters in broiler chicken diets has resulted in increased use of herbs as natural additives in broiler feeds over the recent years. Researchers particularly look for herbs that can affect such parameters as growth performance, immune response, or treatment of certain diseases. Aloe vera is a well-known herb characterized by properties such as anti-bacterial, anti-viral, anti-fungal, anti-tumor, anti-inflammatory, immunomodulatory, wound-healing, anti-oxidant, and anti-diabetic effects. During the past years, attention has shifted toward Aloe vera as a natural additive to broiler diets, and studies have shown that Aloe vera can improve immune response and growth performance in broilers. In addition, Aloe vera is an excellent alternative for antibiotic growth promoters and anticoccidial drugs. Since Aloe vera can be used for broilers in the form of gel, powder, ethanolic extract, aqueous extract, and a polysaccharide contained in Aloe vera gel (i.e. acemannan), more studies are required to determine the best form and to compare Aloe vera with other medicinal herbs. This paper reviews effects of Aloe vera on intestinal microflora, growth performance, immune response, and coccidiosis in broiler chickens.
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Bagal, Vikrant Laxman, Vinod Kumar Khatta, Bachu Singh Tewatia, Sandeep Kumar Sangwan, and Subhash Shamrao Raut. "Relative efficacy of organic acids and antibiotics as growth promoters in broiler chicken." Veterinary World 9, no. 4 (April 2016): 377–82. http://dx.doi.org/10.14202/vetworld.2016.377-382.
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Aguzey, Harry A., Zhenhua Gao, Wu Haohao, Cheng Guilan, Wu Zhengmin, Chen Junhong, and Niu Zhi Li. "The Role of Arginine in Disease Prevention, Gut Microbiota Modulation, Growth Performance and the Immune System of Broiler Chicken – A Review." Annals of Animal Science 20, no. 2 (April 1, 2020): 325–41. http://dx.doi.org/10.2478/aoas-2019-0081.
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AbstractThe effect of dietary arginine on disease prevention, immune system modulation, the gut micro-biota composition and growth of broiler chicken was reviewed. The main aim of poultry production is the maximization of profit at the least possible cost. This objective can mainly be achieved by ensuring that there is no interference in growth or disease outbreak and by feeding chicken with the best possible level of nutrients. With the ban on antibiotic growth promoters, attention is shifted towards other nutrition methods to prevent diseases and promote growth. More attention is therefore given to protein diets in animal nutrition due to their importance as essential part of active biological compounds in the body, assisting in the breakdown of body tissue and helping in the physiological processes of the animal. Arginine plays important function in serving as building blocks of proteins and polypeptides. It performs other roles during the regulation of important biochemical functions such as maintenance, growth, reproduction and immunity. Arginine cannot be synthesized by the body so it has to be supplemented in the diet. When arginine is supplemented above the recommended level, the gut mucosa is protected, immunosuppression is alleviated, diseases like necrotic enteritis, infectious bursal disease and coccidiosis in broiler chickens are prevented. There is an improvement in growth resulting from the increase in intestinal absorption, barrier function and microbiota composition.
Dissertations / Theses on the topic "Chicken - Growth promoters"
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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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Fatoumata, Diarrassouba. "Impacts of antimicrobial growth promoters used in broiler chicken production on the emergence of antibiotic resistance in commensal E. coli and Salmonella." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1614.
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Despite their beneficial effects, concerns have been raised about the role of antimicrobial
growth promoters (AGP) in the emergence of antibiotic resistant bacteria. This study
evaluated the effects of approved AGP on the emergence of antibiotic resistance in
commensal E. coli and foodborne pathogen Salmonella. A survey of antibiotic resistance
levels in commercial broiler chicken farms in the Fraser Valley (B.C.) and an
experimental feeding trial were conducted from May 2004 to February 2005 and May to
November 2005, respectively. The latter examined the effects of ten AGP formulations
(bambermycin, penicillin, salinomycin, bacitracin, combination of salinomycin and
bacitracin, chlortetracycline, virginiamycin 11ppm, virginiamycin 22ppm, monensin and
narasin) on bird performance as well.
Multiple antibiotic resistant commensal E. coli and Salmonella carrying virulence genes
were found at commercial broiler chicken farms and therefore may serve as reservoirs for these genes. There was no significant difference between feed formulations on the
phenotypic or genotypic characteristics of the isolates, except for tetracycline resistance gene tet(B).
In the experimental feeding trial, broiler chickens were fed a diet including or excluding AGP. Birds were sampled prior to and weekly during feeding of the control and the AGPP containing diets. Although not detected on day 0, E. coli increased after day 7 to more than 9.9 log10 CFU/g in ceca. Multi-drug resistant E. coli were isolated from birds fed the ten AGP containing diets as well as the control diet. Except for penicillin, none of the AGP containing diets significantly improved bird performance compared to the control diet (P>0.05). Good management practices can significantly improve broiler chickens performance and decrease the mortality rate.
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Teixeira, Daniela Mossumez Fernandes [UNESP]. "Salmonella spp. em frangos de corte criados com e sem o emprego de promotores de crescimento: prevalência e perfil de resistência a antimicrobianos das cepas isoladas." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/98338.
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No presente estudo foram avaliadas carcaças de frangos convencionais (originárias de aves que recebem promotores de crescimento) e alternativos (que não recebem promotores de crescimento), com o objetivo de: a) avaliar o efeito da não utilização de tais drogas sobre a prevalência de Salmonella spp. em frangos alternativos, comparando-a com a dos convencionais; b) determinar e comparar o perfil de resistência a antimicrobianos das cepas de Salmonella spp. isoladas de ambos os tipos de frangos; c) avaliar o efeito das operações de abate sobre a contaminação das carcaças, tanto em frangos convencionais quanto nos alternativos. Foram avaliadas 50 carcaças convencionais e 48 alternativas, as quais apresentaram prevalências de Salmonella spp. de 58% e 56,3%, respectivamente, ao longo da linha de abate. Na entrada dos frangos no abatedouro, não houve diferença significativa (p > 0,05) nas prevalências entre os dois grupos testados (38% nos convencionais e 47,9% nos alternativos), sendo que ao final do processamento os convencionais apresentaram 47,9% de positividade contra 14,6% dos alternativos, diferença essa significativa (p < 0,05). S. Enteritidis foi o sorotipo predominante entre as cepas identificadas. Quanto ao perfil de resistência, nossos resultados mostraram que, quando observada, ela foi maior nas cepas oriundas dos frangos convencionais. Conclui-se que: a) a não utilização dos promotores de crescimento não levou a um aumento da prevalência de Salmonella spp. nas aves alternativas; b) as cepas oriundas de frangos alternativos revelaram uma tendência a um menor nível de resistência aos antimicrobianos testados quando comparadas às dos convencionais; c) as operações de abate, no caso das aves alternativas, foram responsáveis por uma diminuição na contaminação inicialmente observada no tocante à Salmonella spp, sendo que no caso das convencionais, pelo seu aumento.
Conventional chicken (receiving growth promoters) and alternative chickens (not receiving growth promoters) carcasses had been valuated in the present study, with the following objectives: a) to estimate the effect of no utilization of such drugs on the prevalence of Salmonella spp. in alternative chicken as compared to that of the conventional ones; b) to determine and to compare the resistance profile to antimicrobial agents of Salmonella spp. strains isolated from both types of chickens; c) to valuate the effect of the slaughter operations on the carcasses contamination in conventional chickens and in alternative ones. Fifty conventional and 48 alternative carcasses had been valuated, with Salmonella spp. prevalences of 58% and 56.3%, respectively, along the slaughter line. At the entry of the chickens in the slaughter-house there was no significant difference (p > 0.05) in the prevalences between the two tested groups (38% in the conventional and 47,9% in the alternative), at the end of the processing the conventional presenting 47,9% of positiveness compared to 14,6% of the alternative, this difference being significant (p < 0,05). S. Enteritidis was the predominant serotype among the identified strains. In relation to the resistance profile, our results showed that when it had been observed, it was larger in the strains originated from the conventional chicken. It had been concluded that: a) the removal of the growth promoters did not produce an increase in the Salmonella spp. prevalence in the alternative chicken; b) the strains originated from alternative chicken showed a trend toward a smaller resistance level to the tested antimicrobial agents compared to those from the conventional ones: c) the slaughter operations in the case of the alternative chickens were responsible for a decrease in the contamination initially observed regarding Salmonella spp. and for its increase in the case of the conventional.
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Teixeira, Daniela Mossumez Fernandes. "Salmonella spp. em frangos de corte criados com e sem o emprego de promotores de crescimento : prevalência e perfil de resistência a antimicrobianos das cepas isoladas /." Botucatu : [s.n.], 2006. http://hdl.handle.net/11449/98338.
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Orientador: José Paes de Almeida Nogueira PintoBanca: Luciano dos Santos Bersot
Banca: Vera Lúcia Mores Rall
Resumo: No presente estudo foram avaliadas carcaças de frangos convencionais (originárias de aves que recebem promotores de crescimento) e alternativos (que não recebem promotores de crescimento), com o objetivo de: a) avaliar o efeito da não utilização de tais drogas sobre a prevalência de Salmonella spp. em frangos alternativos, comparando-a com a dos convencionais; b) determinar e comparar o perfil de resistência a antimicrobianos das cepas de Salmonella spp. isoladas de ambos os tipos de frangos; c) avaliar o efeito das operações de abate sobre a contaminação das carcaças, tanto em frangos convencionais quanto nos alternativos. Foram avaliadas 50 carcaças convencionais e 48 alternativas, as quais apresentaram prevalências de Salmonella spp. de 58% e 56,3%, respectivamente, ao longo da linha de abate. Na entrada dos frangos no abatedouro, não houve diferença significativa (p > 0,05) nas prevalências entre os dois grupos testados (38% nos convencionais e 47,9% nos alternativos), sendo que ao final do processamento os convencionais apresentaram 47,9% de positividade contra 14,6% dos alternativos, diferença essa significativa (p < 0,05). S. Enteritidis foi o sorotipo predominante entre as cepas identificadas. Quanto ao perfil de resistência, nossos resultados mostraram que, quando observada, ela foi maior nas cepas oriundas dos frangos convencionais. Conclui-se que: a) a não utilização dos promotores de crescimento não levou a um aumento da prevalência de Salmonella spp. nas aves alternativas; b) as cepas oriundas de frangos alternativos revelaram uma tendência a um menor nível de resistência aos antimicrobianos testados quando comparadas às dos convencionais; c) as operações de abate, no caso das aves alternativas, foram responsáveis por uma diminuição na contaminação inicialmente observada no tocante à Salmonella spp, sendo que no caso das convencionais, pelo seu aumento.
Abstract: Conventional chicken (receiving growth promoters) and alternative chickens (not receiving growth promoters) carcasses had been valuated in the present study, with the following objectives: a) to estimate the effect of no utilization of such drugs on the prevalence of Salmonella spp. in alternative chicken as compared to that of the conventional ones; b) to determine and to compare the resistance profile to antimicrobial agents of Salmonella spp. strains isolated from both types of chickens; c) to valuate the effect of the slaughter operations on the carcasses contamination in conventional chickens and in alternative ones. Fifty conventional and 48 alternative carcasses had been valuated, with Salmonella spp. prevalences of 58% and 56.3%, respectively, along the slaughter line. At the entry of the chickens in the slaughter-house there was no significant difference (p > 0.05) in the prevalences between the two tested groups (38% in the conventional and 47,9% in the alternative), at the end of the processing the conventional presenting 47,9% of positiveness compared to 14,6% of the alternative, this difference being significant (p < 0,05). S. Enteritidis was the predominant serotype among the identified strains. In relation to the resistance profile, our results showed that when it had been observed, it was larger in the strains originated from the conventional chicken. It had been concluded that: a) the removal of the growth promoters did not produce an increase in the Salmonella spp. prevalence in the alternative chicken; b) the strains originated from alternative chicken showed a trend toward a smaller resistance level to the tested antimicrobial agents compared to those from the conventional ones: c) the slaughter operations in the case of the alternative chickens were responsible for a decrease in the contamination initially observed regarding Salmonella spp. and for its increase in the case of the conventional.
Mestre
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Baurhoo, Bushansingh. "Evaluation of purified lignin and mannanoligosaccharides as alternatives to antibiotic growth promoters in poultry production." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100763.
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The potential of lignin and mannanoligosaccharides (MOS), as alternatives to antibiotic growth promoters was evaluated in broilers. Dietary treatments included: (1) negative control (CTL-, antibiotic free); (2) positive control (CTL+, 11 mg/kg virginiamycin); (3) MOS (diet 1 + Bio-Mos: 0.2% to 21 d and 0.1% thereafter); (4) LL (diet 1 + 1.25% Alcell lignin); (5) HL (diet 1 + 2.5% Alcell lignin). Bodyweight and feed conversion were not different when broilers were fed the CTL+, MOS, LL or HL diet. Birds fed MOS or LL had increased jejunum villi height (P < 0.05) and greater goblet cell number per villus (P < 0.05) when compared to those fed the CTL+ diet. MOS and LL increased (P < 0.05) the cecal populations of Lactobacilli and Bifidobacteria when compared to CTL+ fed birds. However, Lactobacilli and Bifidobacteria loads were lowest (P < 0.05) in birds fed the CTL+ or HL diet. Litter E. coli load was reduced (P < 0.05) when birds were fed MOS than when fed the CTL+ diet, but comparable to LL or HL fed birds. In birds challenged with pathogenic strains of E. coli (O2 and O88 serotypes) and fed the MOS or HL diet, the cecal population of total E. coli was lower (P < 0.05) than those fed the CTL+ diet; LL fed birds tended to have lower E. coli load than CTL+ fed birds. In summary, birds fed the MOS or LL diet had comparative advantage over CTL+ fed birds as evidenced by increased cecal populations of Lactobacilli and Bifdobacteria, increased villi height and greater goblet cell number in the jejunum, lower E. coli load in the litter, and lower cecal population of E. coli after an in vivo challenge with pathogenic strains of E. coli. Therefore, MOS and lignin could be regarded as natural alternatives to antibiotic growth promoters in poultry production.Key words. Antibiotics, mannanoligosaccharides, lignin, gut health, broilers.
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Pedroso, Adriana Ayres. "Estrutura da comunidade de Bacteria do trato intestinal de frangos suplementados com promotores de crescimento." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-10092003-160239/.
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O trabalho objetivou avaliar o efeito de probióticos e antibióticos utilizados como promotores do crescimento sobre o desempenho de frangos de corte e a capacidade dos agentes de alterar o ecossistema intestinal de aves criadas em baterias e sobre piso. Adicionalmente foi estudado o efeito dos probióticos sobre a presença de oocistos na cama das aves. Os antibióticos tiveram sua eficácia, como promotores de crescimento, comprovada para aves criadas sobre piso, mas não em bateria. Foram observadas alterações na estrutura da comunidade de Bacteria no trato intestinal de frangos criados em baterias e sobre piso e suplementados com antibióticos. Não houve evidência de efeito favorável dos probióticos sobre o desempenho e incidência de oocisto na cama das aves. Os probióticos não tiveram a capacidade de colonizar o epitélio intestinal de frangos de corte. Foram observadas discretas modificações na estrutura da comunidade de Bacteria de frangos criados em bateria e sobre piso e suplementados com dietas contendo probióticos. A estrutura da comunidade de Bacteria do intestino delgado de frangos foi modificada em função do ambiente no qual frangos, suplementados com probióticos e antibióticos, foram criados. Frangos isentos de qualquer tipo de promotor de crescimento apresentaram 15 unidades taxonômicas operacionais distintas na microbiota intestinal aderida ao epitélio, predominantemente Lactobacillus e Pseudomonas.This study was conducted to evaluated the effects of growth promoter probiotic and antibiotics on the perfomance and organ morphometry of broiler chickens raised in floor pens and in batteries and the ability of the additive to promote changes in the intestinal ecosystem. Additionally, the effect of probiotics on the presence of coccidia oocysts in the litter was evaluated. The efficacy of antibiotics as growth promoters was observed when the chickens were raised in floor pens but not in batteries. Antibiotic supplementation caused changes in the structure of Bacteria community of the intestinal tract of chicken raised in floor pens or in batteries. The probiotic additives tested did not result in improvement in performance in both environmental or in oocyst incidence in the litter. Also, the probiotic did not have the ability to colonize the intestinal epithelium of the birds. Discrete changes in the structure of Bacteria community were observed when probiotics were supplemented to chickens raised in floor pens or in batteries. Bacteria community structure in the small intestine of chicken was modified as a function of the environmental in which the birds were raised. Chicken fed diets devoid of growth promoters had 15 distinct phylogenetic groups in the microbiota adhered to the intestinal epithelium.
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Barros, Thainá Landim de [UNESP]. "Subprodutos da acerola na dieta de frangos de corte." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/152125.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
O subproduto de acerola é uma rica fonte de compostos bioativos que apresentam alta atividade antioxidante. No presente estudo, o desempenho produtivo, a população microbiana cecal, as características da carne, os parâmetros bioquímicos e a atividade antioxidante e oxidante sérica de frangos de corte alimentados com ração adicionada de farelo de subproduto de acerola (FAC), como um ingrediente alternativo, foram comparados com os mesmos parâmetros de frangos de corte alimentandos sem adição de FAC mas com agente melhorador de desempenho (AMD) e antioxidante sintético (AS). As dietas experimentais foram: controle positivo (CP), contendo 0,007% de sulfato de colistina 8% (AMD) e 0,01% de butilhidroxitolueno (BHT) (AS), controle negativo (CN), sem AMD, AS ou FAC, dieta com 5% de FAC (AC 5%) e dieta com 7,5% de FAC (AC 7,5%). Cento e sessenta pintinhos (Cobb 500) foram vacinados com a vacina Livacox T, via ocular e distribuídos aleatoriamente em 16 boxes, com 4 repetições por tratamento, contendo 10 aves em cada. Os animais foram. Parâmetros produtivos foram mensurados semanalmente até 42 dias de idade, quando os animais foram abatidos e a carne, o sangue e o conteúdo cecal foram coletados para as análises de cor/rancidez oxidativa, a contagem da população bacteriana cecal, os parâmetros bioquímicos e o status oxidante/antioxidante sérico. Não houve diferenças para ganho de peso, consumo de ração e conversão alimentar entre os diferentes grupos, assim como para os rendimentos de carcaça e o peso vivo. Apenas o grupo AC 5% apresentou aumento de bactérias lácticas no ceco. A cor do peito e a peroxidação lipídica da coxa não diferiram entre os grupos. Os grupos que receberam FAC apresentaram alta concentração sérica de albumina e proteínas totais, enquanto não houve diferença para as concentrações de globulina e a para a proporção albumina:globulina entre os grupos, assim como para as concentrações séricas de AST, ALT, GGT, creatinina e ácido úrico. O colesterol total foi menor nos animais alimentados com FAC, não diferindo do grupo CP. Os grupos CP, AC 5% e AC 7,5% apresentaram alta capacidade antioxidante total, mas sem diferença para capacidade oxidante total e peroxidação lipídica. Concluiu-se que a adição de FAC na dieta de frangos de corte melhorou o potencial antioxidante sem prejudicar o desempenho produtivo, a saúde e mantendo a população microbiana cecal e as características da carne. O uso do subproduto de acerola como um ingrediente alternativo na dieta de frangos de corte pode atender a demanda a substituição de AMD e AS na produção de frangos de corte e ainda colabora para a sustentabilidade.
Acerola byproducts are a rich source of bioactive compounds with high antioxidant activity. In the present study, productive performance, bacterial caecal population, meat characteristics, biochemical parameters and serum antioxidant status of broilers fed acerola byproduct (ACM) as an alternative ingredient were compared with the same parameters of broilers fed diets with no ACM but with antimicrobial growth promoters (AGP) and synthetic antioxidant (SA). The experimental diets comprised: positive control (PC), containing 0.007% colistin sulfate 8% (AGP) and 0.01% butylated hydroxytoluene (BHT) (SA) and no ACM; negative control (NC), without AGP, AS or ACM; diet with 5% ACM (AC 5%); and diet with 7.5% ACM (AC 7.5%). One hundred sixty one day old Cobb 500 male chicks were vaccinated with Livacox T via ocular and randomly distributed into 16 pens. Four repetitions were performed, with ten birds per pen. used in the experiment. Productive parameters were measured weekly until day 42, when the broilers were slaughtered and the meat, the blood and the caecal contents were collected for the analyses of oxidative rancidity and color of the meat, serum oxidant/antioxidant status and caecal bacterial population counts. There were no differences among the treatments regarding to feed intake, body weight gain and feed conversion, as well as to dressing percent and live weight. Only ACM at 5% caused an increase in the caecal lactic bacteria count. Breast color and thigh lipid rancicity did not differ among the groups. Groups fed ACM had higher serum albumin and total protein, although there were no differences in globulin and albumin:globulin ratio among the experimental diets, as well as to serum concentration of AST, ALT, GGT, creatinine and uric acid. Total cholesterol was lower in the animals fed ACM, with no differences to PC. Groups PC, ACM 5% and ACM 7.5% had higher serum antioxidant activity but similar oxidant activity and lipid oxidation. It was concluded that the addition of ACM into broilers diets improved the birds antioxidant status without harming their performance and health and maintaining the caecal microflora and the meat characteristics. The use of acerola byproduct as an alternative ingredient in broilers feeding may reach the demand for the substitution of AGP and SA in poultry production and still collaborates to sustainability
FAPESP: 15/19448-7
FAPESP: 15/25853-1
FUNEP: 1106
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Barros, Thainá Landim de. "Subprodutos da acerola na dieta de frangos de corte /." Araçatuba, 2017. http://hdl.handle.net/11449/152125.
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Orientador: Elisa Helena Giglio Ponsanocoorientador: Manoel Garcia Neto
Banca: Paulo César Ciarlini
Banca: Elizabeth Santin
Resumo: O subproduto de acerola é uma rica fonte de compostos bioativos que apresentam alta atividade antioxidante. No presente estudo, o desempenho produtivo, a população microbiana cecal, as características da carne, os parâmetros bioquímicos e a atividade antioxidante e oxidante sérica de frangos de corte alimentados com ração adicionada de farelo de subproduto de acerola (FAC), como um ingrediente alternativo, foram comparados com os mesmos parâmetros de frangos de corte alimentandos sem adição de FAC mas com agente melhorador de desempenho (AMD) e antioxidante sintético (AS). As dietas experimentais foram: controle positivo (CP), contendo 0,007% de sulfato de colistina 8% (AMD) e 0,01% de butilhidroxitolueno (BHT) (AS), controle negativo (CN), sem AMD, AS ou FAC, dieta com 5% de FAC (AC 5%) e dieta com 7,5% de FAC (AC 7,5%). Cento e sessenta pintinhos (Cobb 500) foram vacinados com a vacina Livacox T, via ocular e distribuídos aleatoriamente em 16 boxes, com 4 repetições por tratamento, contendo 10 aves em cada. Os animais foram. Parâmetros produtivos foram mensurados semanalmente até 42 dias de idade, quando os animais foram abatidos e a carne, o sangue e o conteúdo cecal foram coletados para as análises de cor/rancidez oxidativa, a contagem da população bacteriana cecal, os parâmetros bioquímicos e o status oxidante/antioxidante sérico. Não houve diferenças para ganho de peso, consumo de ração e conversão alimentar entre os diferentes grupos, assim como para os rendimentos de ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Acerola byproducts are a rich source of bioactive compounds with high antioxidant activity. In the present study, productive performance, bacterial caecal population, meat characteristics, biochemical parameters and serum antioxidant status of broilers fed acerola byproduct (ACM) as an alternative ingredient were compared with the same parameters of broilers fed diets with no ACM but with antimicrobial growth promoters (AGP) and synthetic antioxidant (SA). The experimental diets comprised: positive control (PC), containing 0.007% colistin sulfate 8% (AGP) and 0.01% butylated hydroxytoluene (BHT) (SA) and no ACM; negative control (NC), without AGP, AS or ACM; diet with 5% ACM (AC 5%); and diet with 7.5% ACM (AC 7.5%). One hundred sixty one day old Cobb 500 male chicks were vaccinated with Livacox T via ocular and randomly distributed into 16 pens. Four repetitions were performed, with ten birds per pen. used in the experiment. Productive parameters were measured weekly until day 42, when the broilers were slaughtered and the meat, the blood and the caecal contents were collected for the analyses of oxidative rancidity and color of the meat, serum oxidant/antioxidant status and caecal bacterial population counts. There were no differences among the treatments regarding to feed intake, body weight gain and feed conversion, as well as to dressing percent and live weight. Only ACM at 5% caused an increase in the caecal lactic bacteria count. Breast color and thigh lipid rancicity ... (Complete abstract click electronic access below)
Mestre
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Yu, Chia-Lin, and 余家麟. "Effect of growth promoters Diethylstilbestrol and Hexestrol on chicken growth and on muscle residue." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/42847321117643373697.
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碩士國立屏東科技大學
食品科學系所
96
Abstract Student ID : N9436001 Title of thesis : Effect of growth promoters Diethylstilbestrol and Hexestrol on chicken growth and on muscle residue Total page : 116 Name of institute : Department of Food Science Graduate date : June, 2008 Degree conferred : Master Name of student : Chia-Lin Yu Adviser : Chyi-Shen Lin The contents of abstract in this thesis : Due to hot and humid in Taiwan, domestic poultry was raised under crowed situation. The additives in feed affect animal’s growth rate and cause drug residual problem. Therefore, many counties have established the regulations to rule the safety of residue. Both diethylstilbestrol and hexestrol is synthetic estrogen hormone. Diethylstilbestrol was widely used for estrogen deficiency disorders treatment in veterinary medicine. These drugs can improved carcass quality and feed efficacy and then such growth promoter is commonly abused. The objective of this study was to reveal the effect of growth promoter, diethylstilbestrol and hexestrol, on chicken growth including weight, length, liver weight, crude fat and moisture of chicken drum and on muscle as well as serum residual amount and their withdrawal time. The Cochin male chickens were used in all experiment. Chicks were injected with hexestrol or oral diethylstilbestrol of 1 and 2 mg on 2 weeks age for 6 weeks period in experiment 1. Diethylstilbestrol 2 mg group were higher in weight or length gain than 1 mg group in 1 to 2 weeks period, but hexestrol 1 mg or 2 mg showed no positive effect on both weight and length gain. Chicken liver of oral administration of diethylstilbestrol 1 mg or 2 mg are not significantly different as compared with control group. While chickens injected with 1 mg or 2 mg, livers swelled significantly. Oral ministration chicken of diethylstilbestrol 1 mg or 2 mg and injected hexestrol 1 mg or 2 mg has higher fat content than control （p<0.05）. The fat content of hexestrol treated groups was higher than diethylstilbestrol at same dosage. Diethylstilbestrol 1 mg or 2 mg for 4 weeks and hexestrol 1 mg or 2 mg for 4 weeks groups had moisture decreased significantly (p<0.05). Residual amounts of diethylstilbestrol in tissue and serum ranked by were liver, serum, thigh and breast, and for Hexestrol were breast, serum, liver and thigh. And residues in liver increased along with feeding time. While hexestrol were injected, 2 mg group has higher residues than 1 mg group（p<0.05）in breast, serum and liver of chickens. Diethylstilbestrol residues in breast and serum increased with feeding time. The 4 weeks chicks of treated groups were orally administered diethylstilbestrol 2 mg or injected with hexestrol 2 mg for 3 weeks period in experiment 2. Results showed that diethylstilbestrol and hexestrol had no effect in improving of weight and length gain for 4 weeks old chicks. Comparing 3、5 and 7 weeks of chicks in third trials, injected with hexestrol and orally administered diethylstilbestrol 2.0 mg/day at the same time for 14 days showing no significant effect in weight and length gain either. Result in liver tumescence side effect. The moisture and fat content in thigh had no significant effected in treated groups (p>0.05). Gizzard and liver had higher residual amounts of diethylstilbestrol than serum, thigh and breast. While hexestrol resided more in breast and serum than in gizzard, liver and thigh. Eight weeks old chickens injected with 2 mg hexestrol, and their withdrawal time required 7 days, while the chicken breast meat was target for residual hexestrol. When chickens fed with 2 mg diethylstilbestrol, and their withdrawal time also required 7 days, and of chicken gizzard was target for residual diethylstilbestrol. Key words：estrogen, chicken, diethylstilbestrol, hexestrol
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Mosoeunyane, Nthoto V. "Effect of alternatives to antibiotic growth promoters on broiler performance." Thesis, 2006. http://hdl.handle.net/10413/4382.
Full textBooks on the topic "Chicken - Growth promoters"
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Youssef A. Attia and M. A. Al-Harthi. Nigella seed oil as an alternative to antibiotic growth promoters for broiler chickens. Verlag Eugen Ulmer, 2015. http://dx.doi.org/10.1399/eps.2015.80.
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Y.A. Attia*, A.A. Bakhashwain, and N.K. Bertu. Utilisation of thyme powder (Thyme vulgaris L.) as a growth promoter alternative to antibiotics for broiler chickens raised in a hot climate. Verlag Eugen Ulmer, 2018. http://dx.doi.org/10.1399/eps.2018.238.
Full textBook chapters on the topic "Chicken - Growth promoters"
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Krauze, Magdalena. "Phytobiotics, a Natural Growth Promoter for Poultry." In Veterinary Medicine and Science. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99030.
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Genetic advance aimed at accelerating the growth rate of slaughter birds have reduced the natural resistance of poultry to infections. It also increased susceptibility to stress, which resulted in deterioration of the welfare and productivity of poultry. Additionally, intensive poultry production poses a risk of exposure of chickens to unfavorable zoo-hygienic conditions and contamination with pathogens from the external environment (bedding, water, feed, hen house staff, sick birds in the flock). Due to the potential production losses, measures are taken to improve the health and effectiveness of bird rearing, for example by using growth stimulants and improving the composition of the gastrointestinal microbiome and improving metabolism and the work of the immune system. The addition of phytobiotics to feed or drinking water supports digestion and metabolism in the body, stimulates the growth and development of a useful microbiome, limits the multiplication and adhesion of pathogens, and improves the structure and functioning of enterocytes. The aim of this study is to present the health benefits resulting from the use of phytobiotics in poultry production, as well as to make people aware of the dangers of incompetent incorporation of herbs into feed mixtures or into drinking water. Due to the fact that not all species of animals react equally to a given plant, the selection of plant materials should be carefully considered and matched to the expected benefits. By using phytobiotics you can improve growth and performance of broiler chickens, through greatly improve digestion and nutrient assimilation. Plant additives can improve health through stimulate immunity and increase resistance to stress. Using of phitobiotics improve the quality of meat and eggs, increase the weight of valuable parts of carcass (pectoral and leg muscles) and stimulate laying. Unfortunately, due to the potentially toxic effect of an excess of certain herbs on the work of the liver, and the adverse changes in the palatability of eggs, use caution in the use some herbs e.g. of garlic, turmeric, rapeseed, alfa alfa, shiny privet or moringa.
Conference papers on the topic "Chicken - Growth promoters"
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D, Sumanto. "Awareness of the Antibiotics Growth Promotors (AGP) and Its Application in Chicken Feed." In Proceedings of International Seminar on Livestock Production and Veterinary Technology. Indonesian Center for Animal Research and Development (ICARD), 2016. http://dx.doi.org/10.14334/proc.intsem.lpvt-2016-p.462-468.
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Ma’ruf, Anwar, Sri Iswati, Nove Hidajati, and Ratna Damayanti. "The potency of STAT (signal transducers and activators of transcription) 3 protein as growth promoter for chicken." In 6TH INTERNATIONAL CONFERENCE AND WORKSHOPS ON BASIC AND APPLIED SCIENCES. Author(s), 2017. http://dx.doi.org/10.1063/1.5004308.
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Ma'ruf, Anwar, Ratna Damayanti, and Nove Hidajati. "Signal Tranducers and Activators Transcription (STAT) 5b Protein as A Candidate of Growth Promoter in Broiler Chicken." In 2nd International Conference Postgraduate School. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0007546205250527.
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Shatskikh, Elena, Alyona Nufer, Olga Neverova, and Danis Galiev. "Digestibility and nutrient absorption in broiler chickens when replacing feed antibiotics in mixed feed with safe growth promoters." In Proceedings of the International Scientific and Practical Conference “Digital agriculture - development strategy” (ISPC 2019). Paris, France: Atlantis Press, 2019. http://dx.doi.org/10.2991/ispc-19.2019.120.
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Toghyani, Majid, Sayed Kazem Mousavi, and Mehrdad Modaresi. "Effect of water extract of marjoram (Origanum majorana L.) as an alternative to antibiotic growth promoter on immunity and serum lipid profile of broiler chicks." In 2010 2nd International Conference on Chemical, Biological and Environmental Engineering (ICBEE). IEEE, 2010. http://dx.doi.org/10.1109/icbee.2010.5653956.
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