洛岛白蛋品质性状遗传参数估计  

Estimation of Genetic Parameters for Egg Quality Traits in Rhode Island White

作　　者：李汶 赵晓钰 罗宇星 张雅岚 宁中华[1,2] LI Wen;ZHAO Xiaoyu;LUO Yuxing;ZHANG Yalan;NING Zhonghua(College of Animal Science and Technology,China Agricultural University,Beijing 100193;Sanya Institute of China Agricultural University,Sanya,Hainan 572000;Hebei Xingrui Agricultural and Animal Husbandry Development Co.,Ltd.,Baoding,Hebei 072550)

机构地区：[1]中国农业大学动物科学技术学院,北京100193 [2]中国农业大学三亚研究院,海南三亚572000 [3]河北兴芮农牧发展有限公司,河北保定072550

出　　处：《中国家禽》2024年第9期169-174,共6页China Poultry

基　　金：现代农业产业技术体系教授工作站项目(CARS-40);三亚中国农业大学研究院引导资金项目(SYND-2021-16-(2023))。

摘　　要：为提高洛岛白蛋品质性状的选育效果,试验选取43周龄洛岛白品系107个家系的2122只母鸡所产鸡蛋进行蛋品质测定,并对各项指标进行遗传参数估计和相关性分析。结果显示:蛋壳颜色L^(*)值的估计遗传力为0.56,属于高遗传力性状;蛋重、蛋体积和蛋黄重的估计遗传力分别为0.37、0.37、0.39,属于中等偏高遗传力性状;蛋黄比例的估计遗传力为0.23,属于中低等遗传力性状。相关性分析结果显示,蛋重与蛋体积、蛋黄重均呈强正遗传相关,相关系数分别为0.98、0.67,与蛋壳强度呈弱负遗传相关。蛋黄比例与蛋黄重呈强正相关,遗传相关为0.67;与蛋白高度、哈氏单位呈中等程度负相关。蛋比重与蛋壳强度呈弱正遗传相关,相关系数为0.33。蛋白高度与哈氏单位呈强正相关,表型相关和遗传相关均达到0.95。研究表明洛岛白在选育过程中,应兼顾蛋品质各个性状的相关性及市场需求,达到平衡育种的目的。In order to improve the selection and breeding effect of egg quality traits of Rhode Island White,eggs laid by 2122 hens from 107 families of 43-week-age Rhode Island White strain were selected for egg quality measurement,and genetic parameters were estimated and correlation analyses were carried out for each index.The results showed that the estimated herita⁃bility of eggshell colour L^(*)value was 0.56,which was a high heritability trait;the estimated heritability of egg weight,egg volume and yolk weight were 0.37,0.37 and 0.39,respectively,which were medium-high heritability traits;and the estimated heritability of yolk ratio was 0.23,which was a medium-low heritability trait.The results of correlation analysis showed that egg weight was strongly positively genetically correlated with egg volume and yolk weight with correlation coefficients of 0.98 and 0.67,respec⁃tively,and weakly negatively genetically correlated with eggshell strength.Yolk proportion showed a strong positive genetic corre⁃lation with yolk weight,with a genetic correlation of 0.67,and a moderate negative correlation with egg white height and Haugh unit.Egg weight was weakly and positively genetically correlated with eggshell strength with a correlation coefficient of 0.33,and egg white height was strongly and positively genetically correlated with Haug unit,with phenotypic correlation and genetic correla tion of 0.95.The results indicated that the correlation of various traits of egg quality and the market demand should be taken into account in the selection of Rhode Island White to achieve the purpose of balanced breeding.

关 键 词：洛岛白 蛋品质 遗传参数 

分 类 号：S831.2[农业科学—畜牧学]