五黑鸡不同蛋壳颜色蛋品质比较分析

Comparative Analysis of Egg Quality of Wuhei Chickens with Different Eggshell Colors

摘要:

试验旨在研究五黑鸡不同蛋壳颜色蛋品质及百分比比较分析。选取体重相近,产蛋高峰期的30周龄五黑母鸡120只,试验期5周,分别为31~35周。试验期间,按周分别记录粉壳和绿壳蛋的产蛋数量,在33周和35周，随机选取60枚粉壳和绿壳蛋,用于蛋品质测定及百分比的计算。试验结果表明:(1)33周时粉壳和绿壳鸡蛋蛋品质各项指标均差异不显著(P＞0.05)。其中,粉壳蛋蛋重高于绿壳蛋,蛋形指数、蛋壳强度、蛋壳厚度、蛋白高度、蛋黄颜色、蛋黄重量和哈氏单位等指标绿壳蛋均高于粉壳蛋。35周时蛋形指数和蛋白高度绿壳蛋显著高于粉壳蛋(P＜0.05),蛋重、蛋壳强度、蛋壳厚度、蛋黄颜色、蛋黄重量和哈氏单位等指标粉壳蛋和绿壳蛋均差异不显著(P＞0.05)。(2)31~35周五黑鸡产蛋期间,以产绿壳蛋为主,绿壳蛋占比达75%以上,而粉壳蛋占比在23.15%～24.72%之间。综上所述,五黑鸡粉壳和绿壳鸡蛋蛋品质无显著性差别,产绿壳鸡蛋比例较大。

Abstract:

The experiment was to compare and analyze the egg quality and percentage of Wuhei chickens with different eggshell color.A total of 120 30-week-age Wuhei hens of similar weight and peak laying period were selected.The experiment lasted for 5 weeks(31-35 weeks,respectively).During the experiment,the number of powder shell eggs and green shell eggs were recorded on a weekly basis for the calculation of the percentage.At 33 and 35 weeks,60 powder shell eggs and 60 green shell eggs were collected to determine the egg quality index.The results showed that:(1)At 33 weeks,there were no significant differences in egg quality indexes between powder shell eggs and green shell eggs(P>0.05).The egg weight of powder shell eggs was higher than that of green shell eggs,and the egg type index,eggshell strength,eggshell thickness,egg white height,egg yolk color,egg yolk weight and Haugh unit of green shell eggs were higher than that of powder shell eggs.At 35 weeks,egg type index and protein height of green shell eggs were significantly higher than that of powder shell eggs(P<0.05),but there were no significant differences in the egg weight,eggshell strength,eggshell thickness,egg yolk color,egg yolk weight and Haugh unit between powder shell eggs and green shell eggs(P>0.05).(2)During the laying of eggs from 31 to 35 week,green shell eggs were mainly produced of Wuhei chickens,accounting for more than 75% of green shell eggs,while powder shell eggs accounted for between 23.15% and 24.72%.A combination of all index,there was no significant difference in egg quality of Wuhei chickens between powder shell and green shell eggs,and the proportion of green shell eggs was larger.