British Poultry Science最新文献_第7页

Technical and economic performance favours fully automated climate control broiler housing. 全自动气候控制肉鸡房舍在技术和经济性能上都更胜一筹。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-09-09 DOI: 10.1080/00071668.2024.2394182

A Trentin, D J D Talamini, A Coldebella, A C Pedroso, T M A Gomes

{"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":"1. This study compared two broiler housing models with different technologies (conventional versus 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.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-8"},"PeriodicalIF":1.6,"publicationDate":"2024-09-09","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}

引用次数: 0

Effects of different housing systems on the oxidative defence system, heterophil functions, cellular immune response and cytokines in laying hens. 不同饲养方式对蛋鸡氧化防御系统、异性嗜血杆菌功能、细胞免疫反应和细胞因子的影响

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-09-04 DOI: 10.1080/00071668.2024.2395500

M Erek, E Matur

{"title":"Effects of different housing systems on the oxidative defence system, heterophil functions, cellular immune response and cytokines in laying hens.","authors":"M Erek, E Matur","doi":"10.1080/00071668.2024.2395500","DOIUrl":"https://doi.org/10.1080/00071668.2024.2395500","url":null,"abstract":"1. This study investigated the effects of different housing systems on oxidative defence mechanisms, heterophil functions, cellular immune response and cytokine production in laying hens. One hundred and twenty laying hens were allocated into one of four groups: conventional cages, furnished cages, deep litter, and free range.2. Housing system did not affect malondialdehyde concentrations and enzymatic antioxidant status. Ascorbic acid values were higher in deep-litter hens than in those in conventional cages and free range.3. Phagocytic and chemotactic activities tended to rise in the deep-litter system, and oxidative burst was higher than in furnished cages. Cytotoxic T cells were decreased in furnished cages, both cytotoxic and helper T cells decreased in deep litter compared to free range.4. The IL-2 and IL-13 expression was higher in deep litter than in conventional cages, and IL-6 expression was higher in furnished cages than in free range.5. Housing system had no significant effects on the oxidative defence system; however, they affected heterophil functions, cellular defence mechanisms and cytokine production. The results suggested that breeders need to consider the housing system's potential effects on immune defence responses while applying a breeding strategy appropriate for animal welfare and consumer demand.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-9"},"PeriodicalIF":1.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142124886","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

Temperature manipulation during incubation: effect on embryo development and incidence of white striping and expression of related genes in broiler chickens from two commercial breeds. 孵化过程中的温度控制：对两种商品肉鸡胚胎发育和白条发生率以及相关基因表达的影响。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-08-30 DOI: 10.1080/00071668.2024.2383940

M Vafaeinia, S Yalcin

{"title":"Temperature manipulation during incubation: effect on embryo development and incidence of white striping and expression of related genes in broiler chickens from two commercial breeds.","authors":"M Vafaeinia, S Yalcin","doi":"10.1080/00071668.2024.2383940","DOIUrl":"https://doi.org/10.1080/00071668.2024.2383940","url":null,"abstract":"1. This study evaluated the effects of cyclic eggshell temperature between 10 and 14 d of embryogenesis on traits viz. the expression of MYOZ2, PPARγ and GPx7 in breast muscle, meat quality and incidence of white striping at slaughter age.2. Eggs were obtained from Cobb and Ross broiler breeders to investigate the response of breeds to eggshell temperature, which regulated air temperature. A total of 784 eggs were incubated at either the control eggshell temperature (37.8°C) from 0 to 18 d or exposed to cyclic high eggshell temperature (CHT) at 38.8°C for 6 h/d between 10 and 14 d of incubation. The temperature was 36.8°C between 18 and 21 d. Hatched chicks were reared under optimum rearing conditions. The birds were sampled at 19 d of incubation, at hatch and at 42 d post-hatch.3. There was no effect of eggshell temperature on yolk-free body weight and residual yolk sac weight. The CHT chicks had wider breasts on the day of hatching.4. At hatch and 42d post-hatch, PPARγ expression in Cobb-CHT was upregulated 4.78-fold and downregulated 3.28-fold, respectively, compared to the Cobb-control. At slaughter age, chickens from Ross-CHT had 1.98- and 2.33-fold upregulated PPARγ and GPX7 expressions, respectively, compared to Ross-control. The CHT increased GPx7 expression in the Cobb-CHT day-old chicks compared to the Cobb-control. On ED19, MYOZ2 expression was upregulated in Cobb and downregulated in Ross by CHT.5. The effects of breed and eggshell temperature on pH15, L*, a*, expressible juice and cooking loss were not significant. The CHT increased the incidence of severe white striping lesions in Ross chickens.6. It was concluded eggshell temperature modulated embryo development, incidence of white striping and expression of related genes differently in the two commercial breeds.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-10"},"PeriodicalIF":1.6,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142104614","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

Mannan oligosaccharide as an alternative to infeed antibiotics to improve growth performance of broilers: a meta-analysis. 用甘露寡糖替代饲料抗生素提高肉鸡生长性能：一项荟萃分析。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-08-30 DOI: 10.1080/00071668.2024.2391764

B R Polidoro, M J K de Oliveira, F D S C Braga, G D V Polycarpo

{"title":"Mannan oligosaccharide as an alternative to infeed antibiotics to improve growth performance of broilers: a meta-analysis.","authors":"B R Polidoro, M J K de Oliveira, F D S C Braga, G D V Polycarpo","doi":"10.1080/00071668.2024.2391764","DOIUrl":"https://doi.org/10.1080/00071668.2024.2391764","url":null,"abstract":"1. The purpose of this meta-analysis was to evaluate the effect of mannan oligosaccharide (MOS) as an alternative to antibiotic growth promoters (AGP) on feed intake (FI), body weight gain (BWG), and feed conversion ratio (FCR) of broilers.2. Data from 75,594 broilers were extracted from 17 articles (19 trials) published between January 2010 and March 2023. The main criteria for the publication selection were as follows, at least three treatments applied (negative control group without MOS or AGP versus MOS or AGP supplementation), presence of performance results, and intra-experimental variation associated with the mean of response (such as standard error). Treatments were classified as control, MOS, or AGP, and adjusted means of treatment were compared. Additionally, the average daily gain (ADG) and average daily feed intake (ADFI) of each type of supplementation were calculated relative (Δ) to the control group (ΔADFI and ΔADG) and expressed as a percentage of the difference.3. Broilers receiving a diet supplemented with MOS had a 3.7% better BWG and 3% better FCR compared to the control diet (P < 0.001), but these variables were similar to the group receiving AGP supplementation. No significant difference was detected in FI among treatments (P > 0.050). The relationship between ΔADG and ΔADFI was linear for the MOS and AGP-supplemented group (P < 0.050). The ΔADG of broilers fed diets supplemented with MOS or AGP was 6.4% and 4.54% when ΔADFI was zero, respectively. The ΔADG of MOS increased by 0.58% for every 1% of increasing observed in ΔADFI. The corresponding value for the increased ΔADG for the AGP group was 0.69%.4. The results of this meta-analysis indicated that MOS supplementation is effective in increasing BWG and reducing FCR, similar to broilers fed a diet supplemented with AGP. Therefore, MOS is a safe and sustainable alternative for AGP-free poultry production.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-9"},"PeriodicalIF":1.6,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142104612","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

Effects of intermittent lighting program and light colour on ocular health variables as welfare indicators in broiler chickens. 间歇性光照程序和光色对作为福利指标的肉鸡眼部健康变量的影响。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-08-23 DOI: 10.1080/00071668.2024.2383911

E Derelі Fіdan, R Yaygıngül, M Kaya

{"title":"Effects of intermittent lighting program and light colour on ocular health variables as welfare indicators in broiler chickens.","authors":"E Derelі Fіdan, R Yaygıngül, M Kaya","doi":"10.1080/00071668.2024.2383911","DOIUrl":"https://doi.org/10.1080/00071668.2024.2383911","url":null,"abstract":"1. The objective of the present study was to examine the effect of lighting programs and light colour on ocular health variables as welfare indicators in Ross 308 broilers.2. A total of 384, male, one-d-old broiler chickens (Ross 308) were placed in a completely randomised design with a 2 × 2 factorial arrangement of lighting program (continuous or intermittent) and light colour (white and green LED light). Ross 308 broilers under restricted lighting had 18 h of light (18 L:6D), while those under intermittent lighting had cycles of 17 L:3D:1 L:3D throughout the experimental period, which lasted 42 d.3. At the end of the experiment, all eyes of birds (n = 96 birds) underwent a complete ophthalmic examination, which included the Schirmer tear test I, intraocular pressure and eye dimensions. In addition, 32 broilers (eight birds per trial groups) aged 42 d underwent ophthalmic examination to include assessment of ocular ultrasound biometry.4. Light colour had a significant influence on the mean intraocular pressure (p < 0.001). The Ross 308 broilers kept with intermittent lighting had lower eye weights (2.29 g; p < 0.05), palpebral fissure length (14.39 mm; p < 0.01), eye dorsoventral diameter (17.46 mm; p < 0.05), anteroposterior size (13.70 mm; p < 0.01) and corneal dorsoventral diameter (7.81 mm; p < 0.05) compared to those reared under restricted lighting.5. In conclusion, these values for Ross 308 broilers may be applied in poultry ophthalmology to detect early eye disease symptoms and to help the diagnosis of tear disorders that could cause economic losses and welfare issues. Intermittent lighting and green LED light may help reduce eye health problems thus contributing to improved welfare in broilers.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-9"},"PeriodicalIF":1.6,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142035323","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

Food safety control in poultry industry: prevalence and antimicrobial susceptibility of Escherichia coli isolated from raw chicken and the potential use of Origanum essential oils as alternative to antibiotics. 家禽业的食品安全控制：从生鸡肉中分离出的大肠埃希氏菌的流行率和抗菌药敏感性，以及牛至精油作为抗生素替代品的潜在用途。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-08-01 Epub Date: 2024-07-12 DOI: 10.1080/00071668.2024.2346307

C Abou-Jaoudeh, J Khalil, E El-Hayek, R Abou-Khalil

{"title":"Food safety control in poultry industry: prevalence and antimicrobial susceptibility of Escherichia coli isolated from raw chicken and the potential use of Origanum essential oils as alternative to antibiotics.","authors":"C Abou-Jaoudeh, J Khalil, E El-Hayek, R Abou-Khalil","doi":"10.1080/00071668.2024.2346307","DOIUrl":"10.1080/00071668.2024.2346307","url":null,"abstract":"1. The extensive use of antimicrobials in poultry production may contribute to the emergence of resistant bacteria. This study was conducted to determine the prevalence and resistance of different E. coli strains isolated from raw chicken meat and to investigate the possibility to use Lebanese native oregano essential oils as alternatives.2. In total, 250 chickens from Lebanese markets were examined for the presence of E. coli. Isolates were then screened for susceptibility using 19 antibiotics and two essential oils extracted from oregano plants.3. Of the 250 chickens tested, 80% were contaminated with E. coli. Main resistance was seen against amoxycillin, ampicillin, penicillin, tetracycline, tylosin, streptomycin and erythromycin. The highest rate of sensitivity was found in 86.1% of strains to Amoxycillin/Clavulanic acid, 80.09% to Tilmicosin. Both essential oils from Origanum syriacum (98%) and O. ehrenbergii (97.3%) showed promising potential in inhibiting the growth of the tested bacteria. Oil from O. syriacum exhibited superior efficacy against 200 E. coli strains, inhibiting 46.1% at 200 mg/l and all at 400 mg/l, while O. ehrenbergii oil showed slightly lower inhibition, affecting 41.6% at 200 mg/l and all at 400 mg/l.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"494-501"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141589708","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

Stimbiotic and wheat bran inclusion in maize or wheat-based diets for broiler chickens; effects on jejunal histomorphology, digesta oligosaccharides and caecal short-chain fatty-acids profiles. 在以玉米或小麦为基础的肉鸡日粮中添加刺激性益生菌和麦麸；对空肠组织形态学、消化道低聚糖和盲肠短链脂肪酸谱的影响。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-08-01 Epub Date: 2024-07-12 DOI: 10.1080/00071668.2024.2338535

S Veluri, G González-Ortiz, M R Bedford, O A Olukosi

{"title":"Stimbiotic and wheat bran inclusion in maize or wheat-based diets for broiler chickens; effects on jejunal histomorphology, digesta oligosaccharides and caecal short-chain fatty-acids profiles.","authors":"S Veluri, G González-Ortiz, M R Bedford, O A Olukosi","doi":"10.1080/00071668.2024.2338535","DOIUrl":"10.1080/00071668.2024.2338535","url":null,"abstract":"1. A stimbiotic (STB) is any feed additive that stimulates caeca fibre fermentation, although the additive itself contributes little to the caeca short-chain fatty acid (SCFA) production. A 42 d experiment investigated the interactive effects of STB and wheat bran (WB) in broiler chickens receiving maize or wheat-based diets.2. The treatments were arranged in a 2 × 2 × 2 factorial (eight replicates each), the dietary factors being diet (maize-SBM or wheat-SBM), STB (with or without) and WB (0 or 50 g/kg). Jejunal tissue, gizzard, jejunal and ileal digesta and caecal contents were collected on d 18 and 42.3. Gizzard pH tended to decrease with STB (p = 0.06) supplementation and was lower in birds fed wheat- compared to maize-based diets on d 18 (p < 0.05). Birds receiving diets with WB had higher jejunum pH on d 18 (p < 0.05).4. Total short-chain fatty acids (SCFA) in the caeca on d 18 and isobutyrate on d 42 were higher (p < 0.05) for maize compared with wheat-based diets. However, on d 42, acetate, butyrate and total SCFA were higher (p < 0.05) for wheat-based compared with maize-based diets.5. On d 18, STB and WB inclusion increased villi height (VH; p < 0.05) and VH to crypt depth ratio (VH/CD), respectively (p < 0.05). On d 42, VH (p < 0.05) and VH/CD were higher in wheat-based diets (p < 0.05). The VH/CD ratio was lower with STB supplementation (p < 0.05). Marker-corrected pentose oligosaccharides (Pent)4 and (Pent)5 concentrations in the ileal digesta were reduced (p < 0.05) with STB supplementation. In addition, STB decreased (Pent)3 concentration in maize-, but not wheat-based diets (p < 0.05).6. In conclusion, both WB and STB influenced gastrointestinal pH and jejunum histomorphology of broilers without increasing oligosaccharide concentration in the ileum and SCFA in the caeca.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"465-477"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141589711","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

New primers for sex identification in the Chukar partridges (Alectoris chukar). 用于鉴定楚卡鹧鸪（Alectoris chukar）性别的新引物。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-08-01 Epub Date: 2024-05-08 DOI: 10.1080/00071668.2024.2332723

X X Jia, W Q Chen, X J Tang, J X Lu, Y F Fan, Y S Gao

引用次数: 0

Genetic analysis of a Kaijiang duck conservation population through genome-wide scan. 通过全基因组扫描对开江鸭保护种群进行遗传分析。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-08-01 Epub Date: 2024-05-13 DOI: 10.1080/00071668.2024.2335937

Z Shen, T Zhang, G Twumasi, J Zhang, J Wang, Y Xi, R Wang, J Wang, R Zhang, H Liu

{"title":"Genetic analysis of a Kaijiang duck conservation population through genome-wide scan.","authors":"Z Shen, T Zhang, G Twumasi, J Zhang, J Wang, Y Xi, R Wang, J Wang, R Zhang, H Liu","doi":"10.1080/00071668.2024.2335937","DOIUrl":"10.1080/00071668.2024.2335937","url":null,"abstract":"1. The Kaijiang duck is a native Chinese breed known for its excellent egg laying performance, killing-out percentage (88.57%), and disease resistance. The assessment of population genetic structure is the basis for understanding the genetics of indigenous breeds and for their protection and management.2. In this study, whole-genome sequencing was performed on 60 Kaijiang ducks to identify genetic variations and investigate the population structure. Homozygosity (ROH) analysis was conducted to assess inbreeding levels in the population.3. The study revealed a moderate level of inbreeding, indicated by an average inbreeding coefficient of 0.1043. This may impact the overall genetic diversity.4. Genomic Regions of Interest identified included 168 genomic regions exhibiting high levels of autozygosity. These regions were associated with processes including muscle growth, pigmentation, neuromodulation, and growth and reproduction.5. The significance of these pathways indicated their potential role in shaping the desirable traits of the Kaijiang duck. These findings provide insights into the genetic basis of the Kaijiang duck's desirable traits and can inform future breeding and conservation efforts.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"378-386"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140911416","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

Characterization of circRNA expression profiles associated with non-Mendelian inheritance in feather growth of chickens. 与鸡羽毛生长的非孟德尔遗传相关的 circRNA 表达谱特征。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-08-01 Epub Date: 2024-05-08 DOI: 10.1080/00071668.2024.2339485

M Qiu, C Yu, S Zhu, C Hu, L Yang, X Song, B Xia, X Jiang, H Du, Q Li, Z Zhang, C Yang

{"title":"Characterization of circRNA expression profiles associated with non-Mendelian inheritance in feather growth of chickens.","authors":"M Qiu, C Yu, S Zhu, C Hu, L Yang, X Song, B Xia, X Jiang, H Du, Q Li, Z Zhang, C Yang","doi":"10.1080/00071668.2024.2339485","DOIUrl":"10.1080/00071668.2024.2339485","url":null,"abstract":"1. Non-coding RNAs, such as miRNAs, play a crucial role in chicken feather growth rate. However, circular RNA (circRNA) expression profiles in fast- and slow-feathering chickens that follow and do not follow Mendelian inheritance are unclear.2. The circRNA expression profiles was analysed by RNA sequencing of hair follicles of slow-feathering chickens that follow genetic rules and fast-feathering chickens that did not follow genetic rules. Differentially expressed circRNA-miRNA-mRNA competing endogenous RNA (ceRNA) network was then constructed and the key factors and regulation mechanisms controlling feather growth rate were identified.3. The results revealed that 67 circRNAs were significantly differentially expressed in hens, including 22 up-regulated and 45 down-regulated circRNAs in non-Mendelian inheritance-mediated fast-feathering hens compared with Mendelian inheritance-mediated slow-feathering hens. In addition, 16 significantly differentially expressed circRNAs were identified in cockerels, including nine up-regulated and seven down-regulated circRNAs in non-Mendelian inheritance-mediated fast- compared with Mendelian inheritance-mediated slow-feathering cocks. Moreover, circRNA-mediated ceRNA regulation of hair follicle formation was particularly abundant in the Jak-STAT, Wnt and Toll-like receptor signalling pathways. Furthermore, circABI3BP was seen to be a crucial circRNA in regulating feather growth rate, by binding with gga-miR-1649-5p to regulate SSTR2 expression.4. In conclusion, this study analysed circRNA expression profiles in fast- and slow-feathering chickens that follow and do not follow Mendelian inheritance, which laid the foundation for understanding the role of circRNA in chicken feather growth rate.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"371-377"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140890982","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