British Poultry Science最新文献

{"title":"Potential of accelerometer tags for monitoring of Japanese quail (<i>Coturnix japonica</i>) reproductive behaviour.","authors":"F B Rossi, C Simian, R Fonseca, M C Bosch, R H Marin, L Barberis, J M Kembro","doi":"10.1080/00071668.2024.2399600","DOIUrl":"10.1080/00071668.2024.2399600","url":null,"abstract":"<p><p>1. Monitoring behavioural dynamics in complex animal environments, such as poultry breeding facilities, poses a challenge. Utilising technological approaches, such as accelerometers, offers a solution to assess long-term changes in reproductive activity at an individual bird level. Specifically, these sensors measure acceleration associated with the position and movements of the body over time. However, it is important to assess the most suitable method for attaching accelerometer tags to ensure they do not negatively impact behaviour and yield high-quality data.2. The potential of tri-axial accelerometer tags for assessing reproductive behaviour in Japanese quail was evaluated. Two attachment methods - a backpack (plastic platform with elastic bands near wing bases) and a patch (accelerometer on fabric glued to the synsacrum region) - were compared. Controls were handled similarly but without tags. Eighteen pairs of females were housed in pens and assessed immediately and 24 h after handling. After a week of habituation, a male from the same treatment group was introduced into each pen on d 8. The reproductive behaviour of the males was recorded using accelerometers and video recordings.3. The results showed that birds with patches were able to remove their conspecific's accelerometer and displayed an increased initial immobility response compared to the control and backpack groups. The presence of accelerometer tags did not impact male/female reproductive interactions nor fear responses to a novel object. From accelerometer recordings, male reproductive behaviour was easily identified as high amplitude fluctuations in the three axial components of the acceleration vectors, which was reflected as large values of dynamic body acceleration (VeDBA).4. In conclusion, the use of backpacks with accelerometers is a useful strategy to address highly relevant and difficult to tackle behavioural topics such as the temporal dynamic of male reproductive behaviour within breeding groups.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"19-30"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142567624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic parameter estimation and genetic evaluation of important economic traits in white and yellow broilers.","authors":"X Liu, D Dou, Z Xu, S Wang, C Chen, J Zhou, L Shen, S Wang, H Li, D Zhang, H Zhang","doi":"10.1080/00071668.2024.2394961","DOIUrl":"10.1080/00071668.2024.2394961","url":null,"abstract":"<p><p>1. This study calculated descriptive statistics for the production traits of two broiler populations: 1) the Northeast Agricultural University broiler lines divergently selected for abdominal fat content (NEAUHLF white broilers), including fat and lean lines; and 2) the Guangxi yellow broilers. Their genetic parameters were estimated, including (co)variance components, heritability (<i>h</i>^<i>2</i>) and genetic correlations (r_g), using the REML method.2. Heritability estimates (<i>h</i>^<i>2</i>) for NEAUHLF white broilers ranged from 0.07 to 0.61. Traits with high heritability (<i>h</i>^<i>2</i> >0.3) included body weight at 3, 5 and 7 weeks of age (BW3, BW5, BW7), carcass weight (CW), metatarsal circumference (MeC), liver weight (LW), gizzard weight (GW), spleen weight (SW) and testis weight (TeW), while in Guangxi yellow broilers, heritability estimates ranged from 0.18 to 0.76, with every trait exhibiting high heritability, except for SW (0.18).3. Positive genetic correlations for NEAUHLF were found (r_g >0.3, ranging from 0.31 to 0.84) between BW7 and metatarsal length (MeL), MeC, body oblique length (BoL), chest angle (ChA), LW, GW, heart weight (HW) and SW. Genetic correlations between abdominal fat weight (AFW) and BW1, BW3, BW5, CW, MeL, keel length (KeL), BoL and LW were positive (r_g >0.3, ranging from 0.31 to 0.58).4. Among the Guangxi population, BW (125 d of age) showed strong positive genetic correlations with all other traits (r_g >0.3, ranging from 0.30 to 0.99), while AFW displayed strong positive genetic correlations with leg muscle weight (LeW), CW, BW and thigh diameter (TD) (r_g >0.3, ranging from 0.44 to 0.51).5. It was concluded that the characteristics of the two populations were different, which means there is a need to use different strategies when performing the breeding work to improve productivity and efficiency in both broiler populations.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"42-48"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142153164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Technical and economic performance favours fully automated climate control broiler housing.","authors":"A Trentin, D J D Talamini, A Coldebella, A C Pedroso, T M A Gomes","doi":"10.1080/00071668.2024.2394182","DOIUrl":"10.1080/00071668.2024.2394182","url":null,"abstract":"<p><p>1. This study compared two broiler housing models with different technologies (conventional <i>versus</i> fully automated climate control) to verify their performance and carcass characteristics at slaughter, as well as the economics of production.2. A database regarding 20 443 flocks of heavy broilers produced in an integrated operation during the years 2020 and 2021, in eight Brazilian regions was used in the analysis. The dependent variables included feed conversion, average live weight gain, total and partial carcass condemnation and the total mortality. For economic analysis, the production cost of each technology including feed, labour, energy, heating and depreciation was calculated.3. The technology used in the broiler houses had a significant effect on the technical indicators which were positive for fully automated climate control in most geographical regions. One important exception was the effect on total and partial carcass condemnations, with better results seen for conventional housing. The total cost per ton of broiler meat delivered, deducting condemnation losses, was lower in the automated climate controlled housing compared to conventional housing.4. In conclusion, there was a reduction in broiler chicken production costs for birds raised in fully automated climate controlled housing, indicating better economic results for this model in Brazil.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"63-70"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142153165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcriptomic analysis of long non-coding RNA and mRNA in pigeon squab pectoralis muscle development.","authors":"D Miao, C Zhang, X Wu, Y Wang, V S Chowdhury, H Yang, Z Wang","doi":"10.1080/00071668.2025.2451248","DOIUrl":"https://doi.org/10.1080/00071668.2025.2451248","url":null,"abstract":"<p><p>1. As one of the most widespread poultry species in the world, pigeons have been bred primarily for meat production due to their high nutritional value and good taste. Their breast muscle is an important economic product as it determines the yield and quality of meat from pigeons.2. Long non-coding RNA (lncRNA) plays an important role in transcription and post-transcriptional regulation, but research on the molecular mechanisms of this process in pectoral muscle development in pigeon squabs is lacking.3. Herein, RNA sequencing was used to analyse these mechanisms in pigeon squabs at different ages: 3(D3), 14 (D14) and 25 d (D25). A total of 56 169 differentially expressed (DE) lncRNA and 29 939 DE mRNA were identified among the three age groups, of which 483 were differentially co-expressed. A lncRNA-mRNA interaction network was constructed, and cis-trans identification, Gene Ontology (GO), and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed.4. The results showed that lncRNA affected muscle development through the cell cycle, cytoskeleton in muscle cells, motor proteins, extracellular matrix (ECM) receptor interaction, focal adhesion, and other signalling pathways. Five DE lncRNA and mRNA were selected (<i>LTCONS_00073284,LTCONS_00012834</i>, <i>LTCONS_00032767</i>, <i>LTCONS_00041298</i>, <i>LTCONS_00028245;TNNC1</i>, <i>XIRP1</i>, <i>PITX3</i>, <i>COL4A6</i>, and <i>TNNT3</i>). Their expression patterns were validated by reverse transcription-quantitative polymerase chain reaction (RT-QPCR), which were consistent with the high-through sequencing results.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-11"},"PeriodicalIF":1.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143063985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of pathogenicity factors of avian pathogenic and extraintestinal pathogenic <i>Escherichia coli</i> isolates originating from broiler chickens.","authors":"S Sariçam İnce, A Ünal, M Akan","doi":"10.1080/00071668.2025.2451242","DOIUrl":"https://doi.org/10.1080/00071668.2025.2451242","url":null,"abstract":"<p><p>1. <i>E. coli</i> is an opportunist pathogen of animals, including food-producing ones and humans. Chickens may be a notable source of pathogenic and antimicrobial resistant <i>E. coli</i> for transmission to humans.2. This study compared virulence-associated genes (VGs) and antimicrobial resistance (AMR) in avian pathogenic <i>E. coli</i> (APEC) and extraintestinal pathogenic E. coli (ExPEC) isolates from broiler chickens, specifically APEC isolates in liver samples (<i>n</i> = 78) and ExPEC or non-ExPEC isolates in litter samples (<i>n</i> = 34). Virulence was evaluated by PCR for <i>feoB, hlyF, iroN, iss, iutA</i> and <i>ompT</i> genes, while AMR was evaluated by using antimicrobials from seven classes and detecting <i>bla_SHV, bla_TEM, bla_OXA, qnrB, stcM, mrc1, mrc2, sul1</i> and <i>tetA</i> genes.3. The APEC isolates were found in 100% of livers, while ExPEC and non-ExPEC isolates were found in 44% and 56% of the litter samples. The predominant VG was <i>feoB</i> (100%), followed by <i>ompT</i> (63%), <i>iutA</i> (60%), <i>iss</i> (58%) and <i>hlyF</i> (43%). Surprisingly, <i>iroN, omp T</i> and <i>iutA</i> had higher prevalences in APEC isolates (85%, 96% and 96%, respectively) than in ExPEC isolates (73%, 87% and 73%, respectively) and non-ExPEC isolates (0% for all). The presence of all VG in 33% of isolates indicated high pathogenicity.4. The isolates were phenotypically resistant to ampicillin (93%), ceftazidime (72%) and nalidixic acid (82%). All APEC and ExPEC isolates (100%) were multidrug resistant (MDR), while 63% of non-ExPEC isolates were MDR. Genotypic AMR testing revealed that 53% and 52% of all isolates had <i>stcM</i> and <i>tetA</i>, respectively. No isolate was positive for <i>bla_SHV, bla_OXA, mrc1</i> or <i>mrc2</i>, which suggested the benefits of colistin for treating carbapenem-resistant enteric pathogens, due to the high resistance detected to meropenem (47%).5. Given the potential pathogenicity of <i>E. coli</i> isolates, improving biosecurity practices in chicken flocks should be prioritised to eliminate transmission to humans through the food chain.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-8"},"PeriodicalIF":1.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143032301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterisation of <i>Proteus mirabilis</i> isolates from the poultry production chain in Zhejiang Province, China: antimicrobial resistance, virulence factors and genotypic profiling.","authors":"Y Xu, X Ji, X Chen, G Gui, T He, Y Xiao, L Lv, W Lyu","doi":"10.1080/00071668.2024.2436995","DOIUrl":"https://doi.org/10.1080/00071668.2024.2436995","url":null,"abstract":"<p><p>1. This study investigated antimicrobial resistance, virulence factors and genotypic profiling among <i>Proteus mirabilis</i> isolated from three sources (poultry farms, slaughterhouses and retail markets) in the poultry production chain in Zhejiang Province, China, to assess its potential risk to public health.2. A total of 112 <i>P. mirabilis</i> strains were isolated from 409 samples, including 35 from poultry farms, 35 from slaughterhouses and 42 from retail markets. Antimicrobial susceptibility was tested using 18 antimicrobials in 9 categories, in which 110 (98.2%) strains were considered multidrug-resistant (MDR). These strains carried numerous antimicrobial resistance genes, with the sulphonamide resistance gene (<i>sul1</i>) having the highest rate (100%) and the polymyxin resistance gene (<i>mcr-1</i>) the lowest (3.6%).3. These isolates were validated to carry virulence genes <i>pmfA</i>, <i>mrpA</i>, <i>atfC</i>, <i>rsbA</i>, <i>atfA</i>, <i>ureC</i> and <i>ucaA</i> with the high prevalence of 96.4, 92.9, 92.0, 85.7, 85.7, 57.1 and 46.4%, respectively. Genotyping results using the ERIC-PCR indicated that the genetic similarity of all the isolates was 68.6% to 100% which fell into 4 clusters.4. The <i>P. mirabilis</i> isolates from the slaughterhouses exhibited higher levels of antibiotic resistance and a more pronounced MDR phenomenon than those from poultry farms and retail markets. The proportion of isolates carrying the most commonly detected resistant and virulence genes was higher in samples from poultry farms and slaughterhouses as opposed to retail markets. Importantly, there was genetic similarity and heterogeneity among <i>P. mirabilis</i> isolates from the three sources and genotypic diversity was the highest among isolates from retail markets, followed by slaughterhouses and poultry farms.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-10"},"PeriodicalIF":1.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143032299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the genetic components of growth in ostriches with multi-trait and random regression models.","authors":"C Nel, A Gilmour, P Muvhali, S Cloete, M Kekana, A Engelbrecht","doi":"10.1080/00071668.2024.2442697","DOIUrl":"https://doi.org/10.1080/00071668.2024.2442697","url":null,"abstract":"<p><p>1. The heritability (h²) of liveweight (LW) in ostriches can be highly variable, depending on age at recording. The objective of this study was to consider random regression (RR) as an alternative to the multi-trait (MT) structure for the analysis of repeated measures of LW.2. The data included 74 683 LW phenotypes recorded from 10 052 birds aged between 20 and 410 days (d) of age. Statistical analysis included single trait (ST), MT and RR analysis in a linear mixed model framework using the ASREML V4.2 software.3. For ST and MT, six traits were defined to represent LW at 28, 77, 150, 230, 300 and 365 d of age. Random variance components included direct genetic and maternal permanent environment (PE) effects. A MT analysis including all six traits converged.4. For RR, the data was transformed (LW + 10)^-0.5 due to difficulty in dealing with large scale effects. The final RR model fitted direct genetic and animal PE components as third degree Legendre polynomials and heterogeneous residuals.5. The h² estimates was in agreement across analysis, ranging from moderate (0.16-0.20) for W28 to high (0.41-0.51) for W230 to W365. Importantly, the genetic relationship between LW recorded as a chick and juvenile was only moderate (~0.35 to 0.55). The correlations between RR and MT EBVs for the six traits were 0.85, 0.54, 0.65, 0.75, 0.83 and 0.91, showing a considerable level of re-ranking.6. This study reaffirmed age dependent genetic variation when determining LW in ostriches. The RR structure was useful for overcoming the dimension problem of MT analysis, but was susceptible to scale effects present in the data, despite transformation. It remains unknown whether the need for cubic terms reflected scale or animal effects.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-10"},"PeriodicalIF":1.6,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143000556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Incidence of erysipelas in waterfowl in Poland - clinical and pathological investigations.","authors":"T Nowak, K Wódz, P Kwieciński, A Kwieciński, M Dec","doi":"10.1080/00071668.2024.2406331","DOIUrl":"10.1080/00071668.2024.2406331","url":null,"abstract":"<p><p>1. Erysipelas in geese and ducks is an infectious disease causing considerable economic losses in the poultry sector in Poland. The aim of this study was to determine the distribution of erysipelas cases in age groups of geese and in periods of the calendar year and to assess macroscopic lesions in birds infected with <i>Erysipelothrix rhusiopathiae</i>.2. The study used 286 geese and 16 ducks delivered to the laboratory for diagnosis in the years 2019-2021. The birds came from 99 different farms. <i>E. rhusiopathiae</i> from clinical samples were cultured on Columbia blood agar and identified by real-time PCR. Pathological lesions were characterised during anatomopathological examination.3. Distribution of erysipelas cases in age groups of geese and periods of the calendar year differed significantly from the assumed even distribution. Most cases were noted in August and September in birds aged between 11 and 13 weeks. Necropsy of birds infected with <i>E. rhusiopathiae</i> showed anatomopathological lesions characteristic of generalised infection, affecting multiple organs.4. The uneven distribution of erysipelas cases in geese in different age groups and periods of the calendar year suggested that both the age of the birds and climatic conditions are predisposing factors for infection.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"762-768"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of lipopolysaccharides from pathogenic bacteria on broiler chickens' productivity: a meta-analysis.","authors":"H L Sanjaya, B P Maharani, A P Baskara, Muhlisin, R Martien, Zuprizal","doi":"10.1080/00071668.2024.2364331","DOIUrl":"10.1080/00071668.2024.2364331","url":null,"abstract":"<p><p>1. This meta-analysis investigated the impact of LPS and covariates (serotype, rearing period and administration route) on the productivity parameters of broiler chickens (average daily feed intake (ADFI), average daily gain (ADG) and feed conversion ratio (FCR)).2. Thirty-two eligible studies were included. Hedges' g effect size was determined using a random-effects model at 95% confidence interval.3. Results showed that LPS significantly decreased average daily feed intake (ADFI; <i>p</i> < 0.0001) and average daily gain (ADG; <i>p</i> < 0.0001) and increased FCR (<i>p</i> < 0.0001). The serotypes <i>Escherichia coli</i> 055: B5 (EC055: B5) and <i>Escherichia coli</i> 0127: B8 (EC 0127: B8) significantly reduced ADFI and ADG, and the serotype EC 055: B5 significantly increased the FCR (<i>p</i> < 0.05).4. The intraperitoneal administration of the LPS significantly reduced the productivity of broiler chickens (<i>p</i> < 0.05), but other administration routes did not show such effects. The reduction in ADFI and ADG was found in all rearing periods (<i>p</i> < 0.05), and the increase in FCR was observed in the starter (<i>p</i> = 0.0302) and grower periods (<i>p</i> = 0.0031).5. Exposure to LPS significantly reduced the productivity of broiler chickens (<i>p</i> < 0.05). However, no relationship was observed between LPS dosage and productivity as indicated by the meta-regression study.6. The findings indicated that LPS has detrimental effects on broiler chickens' ADFI, ADG and FCR across various LPS serotypes and rearing periods. These detrimental impacts of LPS remain consistent regardless of the administered dosage.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"708-721"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141466322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mapping genome-wide diversity and population dynamics in Indian chicken breeds for targeted conservation and breeding.","authors":"R Arora, H Kumar, U Sharma, S Ahlawat, R Sharma, P Chhabra, V Sankhyan, R K Vijh","doi":"10.1080/00071668.2024.2379968","DOIUrl":"10.1080/00071668.2024.2379968","url":null,"abstract":"<p><p>1. Genetic improvement and widespread use of artificial selection may have impacted the genetic make-up of Indian chicken breeds. The genetic architecture of contemporary chicken population of India needs to be assessed for future improvement and conservation programmes. This study utilised whole-genome sequences in 180 chicken samples from 16 indigenous breeds, along with the Red Jungle Fowl and the commercial White Leghorn.2. A panel of 76 978 genome-wide single-nucleotide polymorphisms (SNP) was selected for comparative genome analysis after stringent screening. Breeds originating from the eastern regions of India exhibited higher genomic diversity, indicative of a rich repository of distinct germplasm. Conversely, the Uttara breed, from the northern hilly areas, display considerable genetic differentiation with diminished diversity compared to others, underscoring conservation concerns. The average coefficient (F_IS) of 0.084 caution the need to mitigate risks associated with inbreeding.3. The study revealed that the analysis of 76 978 genome-wide SNP will serve as a cornerstone in refining conservation strategies, to design interventions with greater precision.4. The contribution of Red Jungle Fowl to the gene pool of all native breeds was supported by this study. Genetic structuring indicated a relationship among breeds based on geographical proximity, underscored by varying levels of admixture.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"665-676"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142104613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}