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Journal articles on the topic 'Hybrid Lohmann Brown'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Zhivko, Gacovski, Petrovska Biljana, Cilev Goce, Fejzulah Fejzula, and Petrovska Natasha. "THE FULFILLMENT OF GENETIC POTENTIAL FOR EGG PRODUCTION OF HYBRID LOHMANN BROWN CHICKENS ON AGRIPRO FARM IN THE MUNICIPALITY OF VALANDOVO IN REPUBLIC OF MACEDONIA." TRADITION AND MODERNITY IN VETERINARY MEDICINE 4, no. 2 (2019): 66–71. https://doi.org/10.5281/zenodo.3233503.

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Lohmann Brown chickens falls into hybrids with increased productivity of eggs with the genetic potential to produce eggs up to 320 eggs a year per hen and are grown in all climatic conditions. The purpose of this research is to determine how to meet the genetic potential for egg production in chickens hybrid Lohmann Brown, compared with the production results of eggs from this hybrid, derived by applying intensive technology of farm Agripro in Valandovo R. Macedonia in production in year 2014 and 2015. Research is conducted on a sample of 20,500 laying hens in year 2014 and 21,000 laying hens

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Dedousi, Anna, Mirjana Đukić Stojčić, and Evangelia N. Sossidou. "The effect of keel bone damage, housing system, hybrid, and phase of production cycle on the plumage condition of laying hens." Veterinarski arhiv 95, no. 4 (2025): 457–67. https://doi.org/10.24099/vet.arhiv.2765.

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The aim of this study was to investigate the effect of keel bone damage, housing system, hybrid, and phase of production cycle on the plumage condition of laying hens. The trials were conducted in five industrial farms using different housing systems: enriched cage system, floor system, free range system and aviary system. The hybrids presented were Isa Brown, Hy-Line Brown, Hy-Line Silver Brown and Lohmann Brown. Fifty laying hens per farm were randomly selected for the assessment of keel bone damage and plumage condition. According to their age during assessment of feather cover and keel bon

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Schwarzer, Angela, Christina Plattner, Shana Bergmann, et al. "Feather Pecking in Non-Beak-Trimmed and Beak-Trimmed Laying Hens on Commercial Farms with Aviaries." Animals 11, no. 11 (2021): 3085. http://dx.doi.org/10.3390/ani11113085.

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Severe feather pecking (SFP) is a major animal welfare problem in layers. It results in pain and injuries in the affected animal. It was the aim of this study to gain insight into the actual pecking behavior of laying hens kept on commercial farms with flock sizes common in practice. We observed aggressive pecking and SFP in non-beak-trimmed and beak-trimmed flocks of laying hens and investigated possible influencing factors. The study took place on eight conventional farms in Germany with aviaries, including three farms with a free range and a winter garden, one with a free range and one with

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Kolev, Nikolay, Desislav Balev, Stefan Dragoev, et al. "Male Layer-Type Birds (Lohmann Brown Classic Hybrid) as a Meat Source for Chicken Pâtés." Applied Sciences 15, no. 12 (2025): 6702. https://doi.org/10.3390/app15126702.

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The valorisation of underutilized male layer-type chickens offers a sustainable and ethically aligned opportunity for the poultry industry. This study evaluated the feasibility of male layer-type chicken meat in the production of chicken pâtés and compared the effects of different meat sources—commercial broiler (CP), and 5 (5wP) and 9-week-old (9wP) male layer-type chickens—on product quality during refrigerated storage using the general linear model with the Tukey–Kramer post-hoc test. Pâtés made from 5wP meat exhibited the most favourable technological properties, including the lowest (p &l

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Schreiter, Ruben, Klaus Damme, and Markus Freick. "Edible Environmental Enrichments in Littered Housing Systems: Do Their Effects on Integument Condition Differ Between Commercial Laying Hen Strains?" Animals 10, no. 12 (2020): 2434. http://dx.doi.org/10.3390/ani10122434.

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The aim of this study was to investigate the effect of additional enrichment materials (EMs; pecking stones and alfalfa bales) on the occurrence of plumage damage, skin injuries, and toe injuries, with an emphasis on the possible differences between commercial hybrid strains of laying hens. During rearing (weeks 1–18, 16 compartments, 4000 pullets) and laying periods (weeks 21–72, 24 compartments, 2808 hens) in a littered housing system, EMs were permanently provided to the study groups (EXP), while control groups (CON) did not receive additional EM. In a two-factorial study design (two groups

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Meuser, Verena, Leonie Weinhold, Sonja Hillemacher, and Inga Tiemann. "Welfare-Related Behaviors in Chickens: Characterization of Fear and Exploration in Local and Commercial Chicken Strains." Animals 11, no. 3 (2021): 679. http://dx.doi.org/10.3390/ani11030679.

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Fear and exploration are crucial traits determining how animals behave in novel situations, and thus, they influence animal welfare. The aim of this study was the characterization of these behavioral traits among different strains to identify interesting alternatives for future poultry production. Whereas the Novel Object Test (NOT) focuses on fear and exploration of novel objects, the Avoidance Distance Test (ADT) addresses this in the context of humans. Here, a commercial hybrid line, a dual-purpose hybrid and a local adapted strain were tested. For the differences between strains and develo

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Özentürk, U., M. Genç, E. Laçin, Ö. Çoban, A. Uysal, and A. O. Kesen. "The identification of low-producing hens in egg production systems using objective methods." South African Journal of Animal Science 55, no. 3 (2025): 98–114. https://doi.org/10.4314/sajas.v55i3.01.

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In commercial egg production, hen productivity declines over time, leading to flock disposal for economic reasons at 72–80 weeks of age. Identifying and removing low-producing hens can enhance economic sustainability by maximising the performance of high-performing hens and conserving feed resources. Additionally, more space per productive hen can improve overall welfare. Current methods for identifying low-producing hens are subjective and challenging, particularly in large operations. Thus, objective culling techniques are needed. This study evaluated hen productivity by examining physiologi

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8

Giersberg, Mona Franziska, Birgit Spindler, Bas Rodenburg, and Nicole Kemper. "The Dual-Purpose Hen as a Chance: Avoiding Injurious Pecking in Modern Laying Hen Husbandry." Animals 10, no. 1 (2019): 16. http://dx.doi.org/10.3390/ani10010016.

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Dual-purpose strains, with hens housed for egg laying and roosters kept for meat production are one alternative to the killing of male day-old chickens. However, dual-purpose hens seem to have additional advantages compared to conventional layers, for instance, a lower tendency to develop behavioral disorders, such as feather pecking and cannibalism. In the present study, three batches of about 1850 conventional layers (Lohmann Brown plus, LB+) and 1850 dual-purpose hens (Lohmann Dual, LD) each, all of them with untrimmed beaks, were observed during production (20–71 (56) weeks of life) in a s

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Nalyvayko, Lyudmyla, Kateryna Rodionova, Svitlana Pankova, Natalia Shomina, Oleg Katerynych, and Mariia Khimych. "Comparative characteristics of eggs of chickens of domestic and foreign selection in their diverse age." Potravinarstvo Slovak Journal of Food Sciences 15 (March 28, 2021): 245–53. http://dx.doi.org/10.5219/1501.

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At this juncture, more and more attention is drawn to the preservation of the gene pool of local breeds of poultry, which have a set of valuable features, including high-quality eggs. In this study, the quality parameters of eggs (egg weight, weight, and proportion of yolk, weight, and proportion of albumen, yolk-albumen ratio, energy value, lipid and fatty acid content in the yolk) of chickens of Ukrainian selection(such hybrids as Plymouth white, Poltava Clay, Birkivska Barvysta and their interbreed hybrids) and foreign commercial crosses (Tetra SL, Tetra H, Super Harko, Lohmann Brown, Highs

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Sipos, Remus Sebastian, Simona Szasz, Radu Fechete, Eliana Coman, and Florina Ruta. "“Pullum Ovum”. Highlighting the Nutrient Content through Innovative Determination Methods." Agriculture 13, no. 9 (2023): 1648. http://dx.doi.org/10.3390/agriculture13091648.

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Introduction. The benefits or risks of egg consumption have been a challenge for researchers in identifying the most effective methods for evaluating micronutrients and, implicitly, the nutritional properties of eggs. The purpose of this work was to highlight the comparative nutritional properties of eggs from hens with similar productive yields through innovative methods, such as FT-IR spectra. Methods. This paper aimed to determine the omega 3 fatty acid (O3FA) content in eggs. In this study were used eggs from four different breeds of laying hens: Lohmann Brown, Isa Brown, Australorp and a

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Gunjević, Veronika, Darko Grbeša, Dora Zurak, et al. "Effect of Maize Hybrid in Complete Feed on the Production Performance and Economic Considerations in Laying Hens." Sustainability 15, no. 22 (2023): 15748. http://dx.doi.org/10.3390/su152215748.

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The nutritional value of maize grain can be influenced by its genetic background, which can lead to differences that could affect laying hens due to the high proportion of maize hybrids in the complete feed. This study aimed to investigate the effects of modern maize hybrids on hen production and egg quality. Dietary treatments differed only in a grain of 15 high-yielding maize hybrids, added at a fixed proportion of 600 g kg−1 and without additional pigments. By 3 in each cage, 225 Lohmann Brown hens were allocated to 15 dietary treatments in a completely randomized block design (15 treatment

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Tiemann, Inga, Sonja Hillemacher, and Margit Wittmann. "Are Dual-Purpose Chickens Twice as Good? Measuring Performance and Animal Welfare throughout the Fattening Period." Animals 10, no. 11 (2020): 1980. http://dx.doi.org/10.3390/ani10111980.

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Chickens are the world’s most widely used farm animal and have a significant genetic diversity. In the current study, we investigated three strains for their suitability as dual-purpose chickens, with a focus on the fattening ability and welfare of the cockerels: 1. layer cockerels (Lohmann Brown, LB, n = 714); 2. cockerels of a dual-purpose hybrid (Lohmann Dual, LD, n = 844); and 3. cockerels of a native breed (Rhinelander, RL, n = 458). Chicks were raised under identical conditions and marked individually to compare focus and random sampling methods for weighing birds weekly. Because chicks

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Dragoev, Stefan, Desislav Balev, Desislava Vlahova-Vangelova, et al. "A comparative analysis of cooked smoked cockerel products derived from male layer-type chickens (Lohmann Brown Classic hybrid) and dual-purpose cocks (based on Bresse Gauloise)." BIO Web of Conferences 102 (2024): 01001. http://dx.doi.org/10.1051/bioconf/202410201001.

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Breeding of chickens is divided in two categories: meat production with focus on the males, and egg production – targeting the females. Culling of male layer-type chickens is a long-standing practice but is now ban some European countries. The dual-purpose cocks (based on Bresse Gauloise) are potential solution to the problem with banned culling practices. The aim of this work is to compare the cooked smoked cockerel products derived from male layer-type chickens (MLC) and dual-purpose cocks (DPC). The highest sensory scores were awarded to the thighs and fillets of the DPC. The hardness, spri

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14

Aygun, Ali, Doğan Narinç, and Hasan Arısoy. "Comparison of Performance, Egg Quality, and Egg Cost of Different Laying Genotypes in Free-Range System from 21 to 44 Weeks of Age." Animals 15, no. 1 (2025): 86. https://doi.org/10.3390/ani15010086.

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The aim of this study was to compare the performance, egg quality and economic aspects of laying hybrids of different genotypes in free-range system. In the study, three different laying genotypes (Lohmann Brown, Lohmann Sandy and ATAK-S genotype) were used. Each group consisted of four replicates and each replicate contained 20 hens. Egg production, broken–cracked egg ratio, egg weight, feed consumption, feed efficiency, and viability were determined as performance traits. Eggshell strength, Haugh unit, yolk color, and shell color were determined as egg quality traits. The costs of eggs were

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15

Войтенко, С. Л., та О. О. Васильєва. "Сучасний генофонд курей України". Вісник Полтавської державної аграрної академії, № 3 (28 вересня 2018): 115–21. http://dx.doi.org/10.31210/visnyk2018.03.17.

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Подано аналіз стану галузі птахівництва (безпосередньою – курівництва) в племінних господарствах України. Визначено, що на початку 2018 року курей різного напряму продуктивності розводили в 14 племінних господарствах, але при цьому функціонувало лише два племінних заводи і 12 племінних птахоплемрепродукторів другого порядку. Наявне поголів’я птиці відносилося до порід бірківська барвиста та білий плімутрок, а також кросів Кобб-500, Росс-308, Ломанн, Ломан Браун – Лайт, Ломан ЛСЛ – Класік і Хай-Лайн W-36. Відсутність інформації про полтавську глинясту та адлерську сріблясту породи в Державному

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Tiemann, Inga, Senta Becker, Jocelyn Fournier, Daalkhaijav Damiran, Wolfgang Büscher, and Sonja Hillemacher. "Differences among domestic chicken breeds in tonic immobility responses as a measure of fearfulness." PeerJ 11 (April 4, 2023): e14703. http://dx.doi.org/10.7717/peerj.14703.

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Background One priority for animal welfare is for animals to experience less fear, especially during human contact. For domestic animals, breeds that are less fearful may provide genetic resources to develop strains with improved welfare due to lower susceptibility to fear. Genetic predispositions inherited in these breeds might reflect the large diversity of chicken breeds. The goal of the present study was to systematically test a diverse group of chicken breeds to search for breeds that experience less fear. Methods Nineteen chicken breeds from commercial hybrid lines, native layer-type, me

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Sacakli, Pinar, Muhammad Shazaib Ramay, Ahmet Ceylan, et al. "Effects of supplemental hybrid bacterial 6-phytase in low-energy, inorganic phosphorus-free hen diets on laying performance, egg quality, and bone strength." PLOS One 20, no. 4 (2025): e0322135. https://doi.org/10.1371/journal.pone.0322135.

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A 22-week trial was conducted to assess the effects of replacing inorganic phosphorus (P) with two levels of a hybrid bacterial 6-phytase in low-energy diets for laying hens, from 23 to 44 weeks of age. The study focused on hen performance, egg quality and bone health of laying hens. For this purpose, Lohmann Brown Classic hens (n = 432) were randomly allocated to four dietary groups, each comprising nine replicates of 12 birds. The groups included: (1) positive control (PC), a standard diet containing 3.7% calcium, 0.38% non-phytate phosphorus (nPP) and 2730 kcal/kg metabolizable energy (ME),

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Tutkun, Muhittin, Muzaffer Denli, and Ramazan Demirel. "Productivity and Egg Quality of Two Commercial Layer Hybrids Kept in Free-Range System." Turkish Journal of Agriculture - Food Science and Technology 6, no. 10 (2018): 1444. http://dx.doi.org/10.24925/turjaf.v6i10.1444-1447.2070.

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The purpose of this study was to compare the performance and egg quality parameters of two layer hybrids (Lohmann Brown and Atak-S) which were reared in free-range system. The experiment was carried out with a total of 300 laying hens. From 18 to 50 weeks of age Lohmann Brown (LB) and Atak-S (AS) were housed in two groups of 150 hens in a poultry house with a stocking density of 7 hens/m2. The 2 trial groups were formed from 10 repetitions each consisting of 15 hens. At the 20, 30, 40 and 50 weeks of ages, the production performance and egg quality parameters were evaluated. Mean daily feed in

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Giersberg, Mona Franziska, Birgit Spindler, and Nicole Kemper. "Are dual-purpose hens less fearful than conventional layer hybrids?" Veterinary Record 187, no. 5 (2020): e35-e35. http://dx.doi.org/10.1136/vr.105790.

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BackgroundExcessive fear in farm animals can lead to chronic stress and thus impair animal welfare. In laying hens, fear responses in several behavioural tests have also been associated with the occurrence of feather pecking. The aim of the present study was to comparatively assess fear-related responses of conventional layer hybrids (Lohmann Brown plus, LB+) and dual-purpose hens (Lohmann Dual, LD), which seem to be less prone to injurious pecking.MethodsA novel object (NO) and an avoidance distance (AD) test were carried out in both hybrids at a group level and at different ages during the l

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Grigorova, S., and D. Penkov. "INFLUENCE OF THE CEREAL COMPONENTS REPLACEMENT WITH EXTRUDED BREAD WASTE IN THE LAYING HENS DIET ON THE NET UTILIZATION OF ENERGY AND PROTEIN." Trakia Journal of Sciences 19, no. 3 (2021): 222–25. http://dx.doi.org/10.15547/tjs.2021.03.003.

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Aim: Monitoring the effect of the replacement of 5 and 10% of the grain component in compound feed for laying hens with the same amount of extruded bread waste on Clarcs of energy distribution (CED)/ protein transformation (CPT)” in the eco-technical chain "fodder - egg mélange". Experimental design: Three groups: 50 layers each (hybrid Lohman Klassic Brown), one – control, one – replacement of 5% of the grain, one - replacement of 10% of the grain with extruded bread waste. Results: CED “ME fodder – GE mélange”: control – 0.2064; 5% bread wastes – 0.2049; 10% bread wastes – 0.2166. CPT “CP fo

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Penkov, D., and S. Grigorova. "METHODOLOGY FOR REPORTING OF THE ENERGY AND PROTEIN TRANSFORMATION IN THE ECO-TECHNICAL CHAIN “FEED-EGG MELANGE” BY LAYING HENS THROUGH INTRODUCING OF “CLARC OF ENERGY TRANSFORMATION/CLARC OF PROTEIN DISTRIBUTION”." BULGARIAN JOURNAL OF VETERINARY MEDICINE 23, no. 1 (2020): 20–24. http://dx.doi.org/10.15547/tjs.2020.01.004.

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A methodology to account for transformation of metabolizable energy and crude protein in compound feed for laying hens to energy and protein in egg melange (albumen and egg yolk) has been developed. The introduction of Clarc of metabolizable energy transformation and Clarc of crude protein distribution could help to more exactly account of net utilization of nutrients in the eco-technical feed chain. “Clarc” is the ratio of the nutrients studied between primary (feed) and secondary level (animal products, edible by humans). For their establishing, original formulas have been used. They could b

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Tawfeq, Esraa Mobasher, and Majid Ahmed Sabri Al-Nuaimi. "The Productive Performance of Three Lines of Laying Hens and Their Crosses During Three Life Stages." IOP Conference Series: Earth and Environmental Science 1060, no. 1 (2022): 012065. http://dx.doi.org/10.1088/1755-1315/1060/1/012065.

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Abstract This study aimed to compare the productive performance of two local lines chickens (brown and black-feathered chickens) and laying brown Lohman strain and cross-breeding between them for the period from one day to six months old. The birds were divided into seven treatments and the study was on three life stages, the first of (day-8) weeks of age, the second (9-16) weeks and the third (17-24) weeks for the following traits: live body weight, weight gain, feed consumption, feed conversion ratio, and sex maturity, weight of the first egg weight, sexual maturity age, egg production HD%,

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Bayraktar, B., E. Tekce, H. Kaya, M. Karaalp, and E. Turunc. "The impact of dietary tarragon (Artemisia dracunculus) on serum apelin, brain-derived neurotrophic factor, cardiac troponin concentrations and histopathology of liver tissue in laying hens housed at different stocking densities." Veterinární Medicína 65, No. 6 (2020): 269–79. http://dx.doi.org/10.17221/9/2020-vetmed.

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Due to its association with several other stress factors (poultry house gases, inadequate ventilation, heat, cold and poor hygiene), the high stocking density is a major stress factor that adversely affects the health and performance of poultry and the quality of the poultry products. Therefore, this experimental study was aimed at analysing the impact of different doses of dietary tarragon (Artemisia dracunculus) on the serum apelin, plasma brain-derived neurotrophic factor (p-BDNF), and cardiac troponin I (cTnI) concentrations, and the correlation between these indicators in laying hens hous

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Tamang, D. T., M. P. Sharma, and S. R. Barsila. "Performance of meat purpose hybrid chicken under intensive system." Journal of the Institute of Agriculture and Animal Science, August 10, 2018, 187–94. http://dx.doi.org/10.3126/jiaas.v33i0.20704.

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A study was carried out at Livestock farm, IAAS, Chitwan, Nepal in 2011 to identify the best compatible genotypes of hybrid male parents with available breeds of female chicken for the meat production. The measureable traits were egg weight, day old chick weight, feed consumption, body weight gain, infertility, hatchability, feed conversion ratio and meat quality. Research results revealed that the Black Australorp were the best performer with respect to egg size (57.50±0.95 g.) compared with other breeds such as Sakini, New Hampshire and Lohmann Brown. The highest body weight of chicks at eig

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Yenilmez, Fatma. "Comparison of Egg Quality and Microbiology Traits in Eggs Obtained Different Genotypes under Different Storage Conditions." Cukurova University, Agriculture Faculty, June 29, 2024. http://dx.doi.org/10.36846/cjafs.2024.128.

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The present study was conducted to compare egg quality and microbiology traits in eggs from different genotypes under different storage conditions. A total of 880 eggs, obtained from Nick Chick, Dekalb, Lohmann Brown and Atabey (Native Hybrid) hens, flocks aged 56 weeks, were used in the experiment. The eggs were divided into two groups which were stored in wholesaler conditions and consumer conditions for 4 weeks during summer season. External and internal quality traits of eggs and mold-yeast and total bacteria levels were measured. Egg quality criteria results suggest that Lohmann eggs are

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Rieke, Lorena, Birgit Spindler, Isabel Zylka, Nicole Kemper, and Mona Franziska Giersberg. "Pecking Behavior in Conventional Layer Hybrids and Dual-Purpose Hens Throughout the Laying Period." Frontiers in Veterinary Science 8 (April 23, 2021). http://dx.doi.org/10.3389/fvets.2021.660400.

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To avoid the killing of surplus male layer chickens, dual-purpose hybrids are suggested as an alternative approach. These strains may offer additional advantages compared to conventional laying hens, for instance, a lower tendency to develop injurious pecking behavior. The aim of this study was to assess the behavior, with focus on pecking behavior, of conventional layers (Lohmann Brown plus, LB+) and dual-purpose hens (Lohmann Dual, LD). About 1,845 hens per strain with intact beaks were housed in four stable compartments in aviary systems. Video-based scan sampling of general behaviors and c

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Chelnokova, M. I., A. A. Chelnokov, and F. I. Suleymanov. "Comparative characteristics of morphometric indicators of growth and development of egg-type chicken embryos at different stages of embryogenesis." Veterinaria i kormlenie, no. 2 (April 2021). http://dx.doi.org/10.30917/att-vk-1814-9588-2021-2-14.

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The article presents a comparative analysis of morphometric parameters of growth and development of chicken embryos from hybrid poultry egg productivity at different stages of embryogenesis. In the embryos of Loman Brown, compared with Haysex Brown, there was a statistically significant increase in absolute values of length and body weight at all stages of embryonic development. In late-fetal stage length and weight body of embryos, Lohmann Brown was more on 0,339 cm (P<0,001) and 0,167 g (P<0,01), in early-fetal stage - on 0,713 cm (P<0,01) and 1,282 g (P<0,01), in mid-fetal stage

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LESMANA, INDRA, ADITYA RAHMAN ERNANTO, Ayudha Bahana Ilham Perdamaian, TRIJOKO TRIJOKO, and BUDI SETIADI DARYONO. "The association of follicle stimulating hormone receptor (FSHR) gene polymorphism of on egg productivity in hybrid chicken (Gallus gallus gallus, Linnaeus 1758)." Biodiversitas Journal of Biological Diversity 22, no. 3 (2021). http://dx.doi.org/10.13057/biodiv/d220318.

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Abstract. Kurnia RR, Lesmana I, Ernanto AR, Perdamaian ABI, Trijoko, Daryono BS. 2021. The association of follicle stimulating hormone receptor (FSHR) gene polymorphism of on egg productivity in hybrid chicken (Gallus gallus gallus, Linnaeus 1758). Biodiversitas 22: 1221-1226. Pelung chicken genetics Improvement by selective breeding to Layer Lohmann Brown was successfully developed F1 which yielded 140 eggs for 300 days of production. BC1 chicken derived from ♀ Layer and ♂ F1 (♀ Layer vs ♂ Pelung chicken). Polymorphism on cFSHR gene promoter was potential genetic marker candidate to assist th

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Wegner, Marcin, Dariusz Kokoszynski, Dariusz Piwczyński, Karolina Tarasiuk, and Jozef Bujko. "Influence of genotype on carcass composition, metric traits of the digestive system and leg bones of laying hens after the egg-production season." Animal Production Science 64, no. 16 (2024). http://dx.doi.org/10.1071/an23233.

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Context The genotype of laying hens is one of the most important factors influencing their carcass composition and anatomical features. Aims The aim of the present study was to compare two genotypes of laying hens, Lohmann Brown and Lohmann White, after the laying period. Methods The experimental material consisted of 26 carcasses obtained after slaughtering spent laying hens at the age of 83 weeks. Key results The genotype of the birds had a significant (P < 0.05) effect on carcass weight, and the proportion (%) of the breast muscle, leg muscle and gizzard weight. Significant correlations

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Habashy, Walid S., Kwaku Adomako, and Manal M. Abdel-Rahman. "Molecular Characterization of the NRAMP1 Gene and Blood Parameters of Sinai and Lohman Brown Chickens in Egypt." Journal of World's Poultry Research, June 25, 2023. http://dx.doi.org/10.36380/jwpr.2023.23.

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In almost all animal species, natural resistance-associated macrophage proteins (NRAMPs) have been linked to disease resistance. It plays a crucial part in innate immunity and can affect adaptive immunity as well. The aim of this study was to investigate some immunological traits and molecular genetics in the native breed of chickens, named Sinai (S) and a commercial strain of Lohman Brown (LB). The NRAMP1 gene was reported to be associated with a defense mechanism against infection by bacteria and viruses. A total of 144 female day-old chicks, including 72 from the commercial layer strain (LB

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