Genetic parameter estimation and genetic evaluation of important economic traits in white and yellow broilers.

IF 1.6 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE British Poultry Science Pub Date : 2024-09-09 DOI:10.1080/00071668.2024.2394961
X Liu, D Dou, Z Xu, S Wang, C Chen, J Zhou, L Shen, S Wang, H Li, D Zhang, H Zhang
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Abstract

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 (h2) and genetic correlations (rg), using the REML method.2. Heritability estimates (h2) for NEAUHLF white broilers ranged from 0.07 to 0.61. Traits with high heritability (h2 >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 (rg >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 (rg >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 (rg >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) (rg >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.

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白羽肉鸡和黄羽肉鸡重要经济性状的遗传参数估计和遗传评估。
1.本研究对两个肉鸡群体的生产性状进行了描述性统计:1)东北农业大学肉鸡品系(NEAUHLF 白羽肉鸡),包括肥肉和瘦肉品系;以及 2)广西黄羽肉鸡。采用 REML 方法估算了它们的遗传参数,包括(共)方差分量、遗传力(h2)和遗传相关性(rg)。 NEAUHLF 白羽肉鸡的遗传力估计值(h2)在 0.07 至 0.61 之间。遗传率高(h2>0.3)的性状包括 3、5 和 7 周龄体重(BW3、BW5 和 BW7)、胴体重(CW)、跖周长(MeC)、肝重(LW)、胗重(GW)、脾重(SW)和睾丸重(TeW)。3.在 NEAUHLF 中,BW7 与跖长(MeL)、MeC、体斜长(BoL)、胸角(ChA)、LW、GW、心脏重(HW)和 SW 之间存在正遗传相关性(rg >0.3,范围为 0.31 至 0.84)。在广西种群中,体重(125 d 龄)与所有其他性状均呈很强的遗传正相关(rg >0.3,范围在 0.30 至 0.99 之间),而腹脂重(AFW)与体重(BW1)、体重(BW3)、体重(BW5)、CW、MeL、龙骨长(KeL)、BoL 和 LW 呈很强的遗传正相关(rg >0.3,范围在 0.31 至 0.58 之间)。结论是两个种群的特征不同,这意味着在进行育种工作时需要采用不同的策略来提高两个肉鸡种群的生产性能和效率。
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来源期刊
British Poultry Science
British Poultry Science 农林科学-奶制品与动物科学
CiteScore
3.90
自引率
5.00%
发文量
88
审稿时长
4.5 months
期刊介绍: From its first volume in 1960, British Poultry Science has been a leading international journal for poultry scientists and advisers to the poultry industry throughout the world. Over 60% of the independently refereed papers published originate outside the UK. Most typically they report the results of biological studies with an experimental approach which either make an original contribution to fundamental science or are of obvious application to the industry. Subjects which are covered include: anatomy, embryology, biochemistry, biophysics, physiology, reproduction and genetics, behaviour, microbiology, endocrinology, nutrition, environmental science, food science, feeding stuffs and feeding, management and housing welfare, breeding, hatching, poultry meat and egg yields and quality.Papers that adopt a modelling approach or describe the scientific background to new equipment or apparatus directly relevant to the industry are also published. The journal also features rapid publication of Short Communications. Summaries of papers presented at the Spring Meeting of the UK Branch of the WPSA are published in British Poultry Abstracts .
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