京粉1号商品蛋鸡蛋品质分析

Quality Analysis of Jingfen No. 1 Commercial Laying Hens

为研究鸡蛋品质的多样性及其相互关系,随机选取160枚京粉1号商品代蛋鸡对鸡蛋内外品质进行测定。结果表明:在30~43周龄蛋形指数、蛋壳强度、蛋白高度、蛋黄颜色和哈氏单位的变异系数大于10%,长径、短径的变异系数小于5%,蛋壳比例和蛋黄比例、蛋壳重、蛋黄重和蛋重的变异系数在5%~10%。蛋重与长径、短径呈现极显著正相关,相关系数分别为0.767、0.916(P<0.01)。主成分分析结果表明:前4个主成分解释了总体参数方差的82.674%,其中第一主成分为外在品质蛋重、长径和短径的相关性状(29.633%),第二主成分为蛋品内在质量相关性状(20.224%),蛋壳强度、蛋壳重、蛋壳比例以及蛋形指数分别由提取的第3个和第4个主成分解释。综上所述,鸡蛋品质间存在着相关性,此结果可为蛋鸡生产和选育提供基础数据。

In order to study the diversity and correlation of egg quality, 160 Jingfen no.1 commercial eggs of laying hens were randomly selected to determine egg internal and external quality. Results show that the variation coefficient of egg-shaped index, eggshell strength, height of protein, egg yolk color andhartz unit are greater than 10%;the variation coefficient of length diameter and short diameter is less than 5%;eggshell scale, egg yolk scale, eggshell weight, egg yolk weight and egg weight arebetween 5% and 10%.Egg weight was significantly positively correlated with long diameter and short diameter, and the correlation coefficients were 0.767 and 0.916, respectively(P<0.01).Principal component analysis results show that the first four principal components explained 82.674% of the parameter of variance.The first principal component is egg external quality, including relevant properties of egg weight, long diameter and short diameter(29.633%). The second principal component is egg inner quality relevant properties(20.224%). Eggshell strength, eggshell weight, eggshell percentage and egg-shaped index respectively are explained by the third and fourth principal components. To sum up, there is a correlation between egg quality, which provides basic data for laying hen production and breeding.