British Poultry Science最新文献_第8页

Increasing digesta viscosity altered nutrient transporter gene expression and decreased nutrient utilisation in Eimeria-challenged birds. 增加消化液粘度会改变营养物质转运体基因的表达，并降低感染艾美耳病的鸟类对营养物质的利用率。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-08-30 DOI: 10.1080/00071668.2024.2377276

E O Alagbe, P Jaynes, C S Park, O Adeola

{"title":"Increasing digesta viscosity altered nutrient transporter gene expression and decreased nutrient utilisation in Eimeria-challenged birds.","authors":"E O Alagbe, P Jaynes, C S Park, O Adeola","doi":"10.1080/00071668.2024.2377276","DOIUrl":"10.1080/00071668.2024.2377276","url":null,"abstract":"1. Two experiments were conducted, the first was to investigate the effect of increasing digesta viscosity by dietary carboxymethyl cellulose (CMC) on the growth performance and intestinal morphology and characteristics of healthy birds. The second experiment evaluated the impact of increased digesta viscosity in birds during an Eimeria spp. challenge.2. In experiment 1, a corn-soybean meal-based basal diet was supplemented with 0, 10 or 20 g/kg CMC at the expense of cornstarch and offered to seven birds in each of eight replicate cages per diet from d 8 to 22 post hatching.3. Increasing digesta viscosity due to dietary CMC linearly reduced (p < 0.05) body weight (BW) gain and the apparent ileal digestibility of nutrients. The relative lengths of the duodenum, jejunum and ileum linearly increased (p < 0.01) with dietary CMC inclusion.4. In experiment 2, on d 14, 256 broiler chickens were randomly assigned to eight replicate cages in a 2 × 2 factorial arrangement of treatments with two CMC concentrations (0 or 10 g CMC/kg of diet), with or without an Eimeria challenge. On d 15, birds in the challenge groups were orally gavaged with a 1 ml solution containing 25,000, 25,000 or 125,000 oocysts of E. maxima, E. tenella and E. acervulina; or 1% PBS, respectively.5. Increasing digesta viscosity in Eimeria-challenged birds decreased the total tract digestibility of dry matter and gross energy (p < 0.05). The ileal gene expression of glucose transporters was upregulated (p < 0.05) in challenged birds that received the CMC-supplemented diet.6. In summary, increased digesta viscosity induced changes in the expression of nutrient transporter genes and decreased nutrient utilisation in Eimeria-challenged birds.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"769-780"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142104611","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}

引用次数: 0

Occurrence, antibiotic resistance and molecular characterisation of Shiga toxin-producing Escherichia coli isolated from broiler chickens in Tunisia. 突尼斯肉鸡中分离出的产志贺毒素大肠杆菌的发生率、抗生素耐药性和分子特征。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-07-05 DOI: 10.1080/00071668.2024.2368906

G Tayh, F Nsibi, K Chemli, M Daâloul-Jedidi, O Abbes, L Messadi

{"title":"Occurrence, antibiotic resistance and molecular characterisation of Shiga toxin-producing Escherichia coli isolated from broiler chickens in Tunisia.","authors":"G Tayh, F Nsibi, K Chemli, M Daâloul-Jedidi, O Abbes, L Messadi","doi":"10.1080/00071668.2024.2368906","DOIUrl":"10.1080/00071668.2024.2368906","url":null,"abstract":"1. Shiga toxin-producing Escherichia coli (STEC) strains are associated with disease outbreaks which cause a public health problem. The aim of this study was to determine the frequency of STEC strains, their virulence factors, phylogenetic groups and antimicrobial resistance profiles in broiler chickens.2. A total of 222 E.coli isolates were collected from the caecum of chickens intended to be slaughtered. Antibiotic susceptibility was tested against 21 antimicrobial agents and ESBL phenotype was assessed by double-disk synergy test. The presence of STEC virulence genes stx1, stx2,eaeA and ehxA was detected by PCR. The identification of STEC serogroups was realised by PCR amplification. Additive virulence genes, phylogenetic groups and integrons were examined among the STEC isolates.3. Out of 222 E.coli isolates, 72 (32%) were identified as STEC strains and the most predominant serogroups were O103, O145 and O157. Shiga toxin gene 1 (stx1) was found in 84.7% (61/72) of the STEC strains, and eae and stx2 were detected in 38.8% and 13.8%, respectively. The ESBL phenotype was documented in 48.6% (35/72) of isolates. Most of the isolates (90.3%) carried class 1 integron with the gene cassette encoding resistance to trimethoprim (dfrA) and streptomycin (aadA) in 31.9% of the isolates. Class 2 integron was identified in 36.1% of isolates.4. Broilers can be considered as a reservoir of STEC strains which have high virulence factors and integrons that might be transmitted to other chickens, environments and humans. It is important to undertake surveillance and efficient control measures in slaughterhouses and farms to control measures of STEC bacteria.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"751-761"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141533664","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}

引用次数: 0

Heavy metals accumulation in the meat, kidney and liver of cattle, broilers and goats sold in Quetta, northwestern city of Balochistan, Pakistan. 巴基斯坦俾路支省西北部城市奎达出售的牛、肉鸡和山羊的肉、肾脏和肝脏中重金属的积累情况。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-08-16 DOI: 10.1080/00071668.2024.2377743

A Mushtaq, A Sajjad, T Ismail, O Ali

{"title":"Heavy metals accumulation in the meat, kidney and liver of cattle, broilers and goats sold in Quetta, northwestern city of Balochistan, Pakistan.","authors":"A Mushtaq, A Sajjad, T Ismail, O Ali","doi":"10.1080/00071668.2024.2377743","DOIUrl":"10.1080/00071668.2024.2377743","url":null,"abstract":"1. It was assumed that the concentrations of arsenic (As), chromium (Cr), cobalt (Co), lead (Pb), manganese (Mn) and mercury (Hg) in the meat, kidney and liver of cattle, broilers and goats within Quetta city potentially exceeded the permissible limits for heavy metal content. Risk assessment of these heavy metals on human health were estimated based on daily intake (EDI), target hazard quotient (THQ) and hazard index (HI).2. Samples of the meat, liver and kidney of cattle, broilers and goats were collected from butcher shops and slaughterhouses in 20 different areas of Quetta city. Overall, 180 samples were analysed, each for six heavy metals. After acid digestion of meat samples, heavy metals analysis was carried out via atomic absorption spectroscopy.3. The results varied in levels depending upon the species and organ type. The average concentrations of As, Pb and Hg were within the established reference limits of the Australia New Zealand Food Authority (ANZFA 2015) and the European Commission (EC, 2006), although some samples exceeded these limits. Compared with the kidney and meat, the liver was the primary tissue for Cr, Pb and Hg bioaccumulation. Metals concentration were mostly within the normal range in samples from cattle and goats, while the Mn concentration was elevated in broilers.4. The estimated daily intake (EDI) revealed that the intake of As, Co, Pb and Hg was mainly derived from goat and cattle products, whereas broiler samples were more contaminated with Cr and Mn. The EDIs of Cr and Hg in adults exceeded the oral reference dose, referring to potential adverse effects. The EDIs for Co and Mn were low, suggesting that additional intake sources were necessary. Except for As, none of the determined elements had a target hazard quotient (THQ) above 1.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"740-750"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141987484","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}

引用次数: 0

Substitution of soybean meal for yellow mealworm meal in the diet of slow-growing chickens provides comparable carcass traits and meat quality. 在慢速生长鸡的日粮中用黄粉虫粉替代大豆粉，可提供相似的胴体特征和肉质。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-06-28 DOI: 10.1080/00071668.2024.2369671

J Nieto, J Plaza, M Hernández-Jiménez, I Revilla, C Palacios

{"title":"Substitution of soybean meal for yellow mealworm meal in the diet of slow-growing chickens provides comparable carcass traits and meat quality.","authors":"J Nieto, J Plaza, M Hernández-Jiménez, I Revilla, C Palacios","doi":"10.1080/00071668.2024.2369671","DOIUrl":"10.1080/00071668.2024.2369671","url":null,"abstract":"1. This study investigated the effects of incorporating yellow mealworm (Tenebrio molitor) larval meal as a partial and/or complete substitute for soybean meal on carcass and meat quality in slow-growing chickens.2. A total of 256 one-day-old male broilers were randomly allocated to 1 of 32 experimental units distributed among four treatments (n = 8): the control treatment (C), where soybean (SB) meal was the protein source, and three experimental treatments, in which SB meal was replaced by Tenebrio molitor (TM) larval meal at levels of 50% (T1), 75% (T2) and 100% (T3), respectively. Three different feed phases (1-29; 29-57 and 57-92 d of age) were used for each treatment. All chickens were slaughtered at 92 d of age, with eight animals per treatment randomly selected to assess carcass and meat quality. Near-infrared reflectance spectroscopy (NIR) was used to classify meat quality.3. Carcass traits were not significantly different between treatments, except for head and thigh weight, which were higher in the control group (p < 0.01). In terms of physicochemical characteristics, treatment T2 showed less yellowness (p < 0.05), while water and cooking losses were lower in treatments T1 and T2 (p < 0.01). Meat from both T1 and T2 groups had lower shear forces (p < 0.01), higher moisture content (p < 0.01) and less protein (p < 0.05) compared to treatments C andT3. Birds fed T3 had the highest meat ash content (p < 0.01). Chickens consuming TM had higher monounsaturated fatty acid (MUFA) levels and lower polyunsaturated fatty acid (PUFA) and n-6 acidsPUFA (p < 0.01).4. Substitution of SB with TM is a protein alternative for slow-growing chickens that supports carcass and meat quality comparable to those fed a conventional diet.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"730-739"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141466323","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}

引用次数: 0

Genetic parameters and correlations for behavioural response traits towards humans in South African Black ostriches. 南非黑鸵鸟对人类行为反应特征的遗传参数和相关性。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-06-21 DOI: 10.1080/00071668.2024.2368902

P T Muvhali, M Bonato, A Engelbrecht, I A Malecki, S W P Cloete

{"title":"Genetic parameters and correlations for behavioural response traits towards humans in South African Black ostriches.","authors":"P T Muvhali, M Bonato, A Engelbrecht, I A Malecki, S W P Cloete","doi":"10.1080/00071668.2024.2368902","DOIUrl":"10.1080/00071668.2024.2368902","url":null,"abstract":"1. The aim of this study was to estimate heritability and genetic correlations, first among behavioural responses of juvenile South African Black ostriches towards humans and secondly with slaughter weight and skin traits.2. Behavioural traits, such as willingness of the birds to approach humans, keeping a distance from the human observer and allowing touch interactions by a human were recorded (n = 1012 birds). In addition, slaughter weight, skin size, scores for nodule size, nodule shape and the presence of hair follicles were recorded.3. Single- and multi-trait animal model analyses performed on the data using ASReml4 revealed high heritability estimates of 0.44 for allowing touch interactions and 0.48 for both willingness to approach and keeping a distance from the human observer. In addition, significant genetic correlations among behavioural response traits were estimated, ranging from -0.99 between keeping a distance and willingness to approach the human observer, to 0.87 between allowing touch interactions and willingness to approach the human observer.4. In contrast, genetic correlations of behavioural response traits with most slaughter and skin traits were low, variable, and not significant. The exception was hair follicle score, which appeared to be unfavourably correlated with key behavioural traits.5. This study suggested that the temperament of ostriches could be improved by selection of birds that demonstrate willingness to associate with humans without compromising slaughter weight or skin traits.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"645-651"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141431414","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}

引用次数: 0

Insights of dietary electrolyte balance in broilers raised under natural heat stress conditions. 自然热应激条件下肉鸡日粮电解质平衡的启示

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-10-14 DOI: 10.1080/00071668.2024.2379959

F A D S Moura, D R S E Silva, R D S Araújo, G J B D C Ferreira, P M Lopes, S D C Silva, R M Bezerra, F L D A Carvalho, J D F S Cardoso, L P Machado, L R B Dourado

{"title":"Insights of dietary electrolyte balance in broilers raised under natural heat stress conditions.","authors":"F A D S Moura, D R S E Silva, R D S Araújo, G J B D C Ferreira, P M Lopes, S D C Silva, R M Bezerra, F L D A Carvalho, J D F S Cardoso, L P Machado, L R B Dourado","doi":"10.1080/00071668.2024.2379959","DOIUrl":"10.1080/00071668.2024.2379959","url":null,"abstract":"1. Dietary electrolyte balance (DEB) has been used to minimise problems in broiler chickens raised in warm climates. However, there is a need to determine the most appropriate DEB levels in these animals2. This study evaluated the influence of five DEB levels (110, 175, 240, 305 and 370 mEq/kg) on water intake (WI), zootechnical performance (feed intake, weight gain and feed conversion ratio), tibiotarsus bone variables (fresh bone weight, dry bone weight, bone length, mineral matter, Seedor index and bone strength) and intestinal histomorphometry (villus height (VH) and width (VW), crypt height (CH) and width (CW), internal and external muscularis) on broilers in two developmental phases (1-21 and 22-42 d of age). Additionally, the haematological profile (blood count and serum biochemistry), carcass yield, cuts and abdominal fat were assessed.3. Applying 370 mEq/kg DEB increased WI, VW in the jejunum and ileum and number of haemocytes at 21 d, while WI and VW in the duodenum and ileum at 42 d. In contrast, 110 mEq/kg increased chlorine concentrations at 21 d and leukocyte and heterophil numbers at 42 d.4. In summary, the 370 mEq/kg level was the most appropriate for broiler homoeostasis raised under natural heat stress, as the best results were found on WI and VW variables. Therefore, this DEB level was recommended in broilers aged 21 or 42 d.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"781-789"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142458549","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}

引用次数: 0

Decoding the duration of fertility of laying chicken through phenotypic and proteomic evaluation. 通过表型和蛋白质组评估解码蛋鸡的生育期。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-09-23 DOI: 10.1080/00071668.2024.2378479

M A Kabir, H Ruan, L Rong, M A Horaira, X Wu, L Wang, Y Wang, J Cai, S Han, S Li

{"title":"Decoding the duration of fertility of laying chicken through phenotypic and proteomic evaluation.","authors":"M A Kabir, H Ruan, L Rong, M A Horaira, X Wu, L Wang, Y Wang, J Cai, S Han, S Li","doi":"10.1080/00071668.2024.2378479","DOIUrl":"10.1080/00071668.2024.2378479","url":null,"abstract":"1. This study determined the effective indicators and proteins involved in long-duration fertility (DF) in chickens.2. Three lines of Chinese Xinhua chickens (900) were compared using seven phenotypic trait indicators, and the best was determined based on repeatability value. Subsequently, differential expression analysis, functional annotation and protein-protein interaction (PPI) network analyses were performed to investigate the pathways and hub proteins. Finally, qPCR analysis was conducted to validate the expression of identified hub proteins, and functional annotation with previously published genes was performed to explain how hub proteins work to maintain the trait.3. The study found that the number of fertilised eggs (FN) and maximum fertilised eggs (MCF) were the most repeatable among the seven indicators. It identified 231 differentially expressed proteins, with 144 being down-regulated and 87 being up-regulated. The differentially expressed proteins exhibited high clustering within various cellular compartments, including the cytosol and cytoplasm and GTP binding. Multiple pathways were identified, including tight and adherens junctions, TGF-beta signalling, autophagy-animal, regulation of actin cytoskeleton and the ribosome that may regulate the trait. Three hub proteins, KRAS, RPL5 (p < 0.001), and HSPA4 (p < 0.01), were significantly differentially expressed between high and low DF groups.4. This study identified FN and MCF as effective indicators for addressing DF. As it is a quantitative trait, KRAS, HSPA4, and RPL5 are potential hub proteins that work with other genes to maintain the trait.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"677-689"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142280557","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}

引用次数: 0

Comparison of different derivatisation for amino acids determination of foie gras by high performance liquid chromatography (HPLC). 通过高效液相色谱法（HPLC）测定鹅肝中氨基酸的不同衍生方法比较。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-07-30 DOI: 10.1080/00071668.2024.2375723

R Wei, Y Teng, R Ning, Z Luo, L Bai, C Han

{"title":"Comparison of different derivatisation for amino acids determination of foie gras by high performance liquid chromatography (HPLC).","authors":"R Wei, Y Teng, R Ning, Z Luo, L Bai, C Han","doi":"10.1080/00071668.2024.2375723","DOIUrl":"10.1080/00071668.2024.2375723","url":null,"abstract":"1. In order to compare the difference between different derivatisations for amino acids determination of foie gras via, reversed phase high performance liquid chromatography (HPLC), O-phthalaldehyde and 9-fluorenyl-methyl chloroformate (OPA-FMOC group), phenylisothiocyanate (PITC group) and 6-Aminoquinolyl-N-hydrox-ysuccinimidyl Carbamate (AQC group) were applied to derivatisation reagent in this current experiment. The determination results of automatic amino acid analyser were applied, and 17 amino acids were detected by these three derivatisation methods.2. The running times of OPA-FMOC group, PITC group and AQC group were 18, 45 and 35 min, respectively. There was a large difference between the results of OPA-FMOC group and results from the automatic amino acid analyser, although the difference between the results from PITC and the automatic amino acid analyser was minimal.3. In conclusion, the running time of OPA-FMOC group was shorter than that of PITC group and AQC group; the accuracy of the former was better than the OPA-FMOC group and AQC group for the determination of amino acid of foie gras.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"790-799"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141791976","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}

引用次数: 0

Molecular characterisation of IBDV isolates in Turkey revealed reassortant strains. 土耳其 IBDV 分离物的分子特征发现了重交株。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-07-30 DOI: 10.1080/00071668.2024.2379950

G A Kurtbeyoğlu, M Akan

引用次数: 0

Integrating genomics and transcriptomics to identify candidate genes for high-altitude adaptation and egg production in Nixi chicken. 整合基因组学和转录组学，鉴定尼西鸡高海拔适应性和产蛋量的候选基因

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-06-26 DOI: 10.1080/00071668.2024.2367228

C Deng, M Li, T Wang, W Duan, A Guo, G Ma, F Yang, F Dai, Q Li

{"title":"Integrating genomics and transcriptomics to identify candidate genes for high-altitude adaptation and egg production in Nixi chicken.","authors":"C Deng, M Li, T Wang, W Duan, A Guo, G Ma, F Yang, F Dai, Q Li","doi":"10.1080/00071668.2024.2367228","DOIUrl":"10.1080/00071668.2024.2367228","url":null,"abstract":"1. This study combined genome-wide selection signal analysis with RNA-sequencing to identify candidate genes associated with high altitude adaptation and egg production performance in Nixi chickens (NXC).2. Based on the whole-genome data from 20 NXC (♂:10; ♀:10), the population selection signal was analysed by sliding window analysis. The selected genes were screened by combination with the population differentiation statistic (FST). The sequence diversity statistic (θπ). RNA-seq was performed on the ovarian tissues of NXC (n = 6) and Lohmann laying hens (n = 6) to analyse the differentially expressed genes (DEGs) between the two groups. The functional enrichment analysis of the selected genes and differentially expressed genes was performed.3. There were 742 genes under strong positive selection and 509 differentially expressed genes screened in NXC. Integrated analysis of the genome and transcriptome revealing 26 overlapping genes. The candidate genes for adaptation to a high-altitude environment, as well as for egg production, disease resistance, vision and pigmentation in NXC were preliminarily screened.4. The results provided theoretical guidance for further research on the genetic resource protection and utilisation of NXC.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"652-664"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141449803","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}

引用次数: 0