| 蛋重和蛋形指数对拉萨白鸡种蛋孵化效果的研究 |
| |
| 引用本文： | 蛋重和蛋形指数对拉萨白鸡种蛋孵化效果的研究.蛋重和蛋形指数对拉萨白鸡种蛋孵化效果的研究[J].畜牧与饲料科学,2018,39(6):1-1. |
| |
| 作者姓名： | 蛋重和蛋形指数对拉萨白鸡种蛋孵化效果的研究 |
| |
| 作者单位： | 西藏自治区农牧科学院畜牧兽医研究所,西藏拉萨850009 |
| |
| 基金项目： | 拉萨白鸡新品种选育; 国家蛋鸡产业技术体系——拉萨综合试验站 |
| |
| 摘 要： | 为研究拉萨白鸡种蛋蛋重和蛋形指数（纵径/横径）对孵化效果的影响,在相同孵化条件下,选用3世代47周龄拉萨白鸡种蛋,按蛋重分组进行孵化,Ⅰ组（≤45.0 g）蛋形指数为（1.27±0.05）,Ⅱ组（45.1-50.0 g）蛋形指数为（1.27±0.05）,Ⅲ组（50.1-55.0 g）蛋形指数为（1.27±0.05）,Ⅳ组（55.1-60.0 g）蛋形指数为（1.28±0.05）,Ⅴ组（〉60.0 g）蛋形指数为（1.31±0.05）。结果表明,种蛋的蛋重越大,其纵径均值、横径均值、蛋形指数均值、受精率、入孵蛋孵化率、受精蛋孵化率和雏鸡初生重越大,即Ⅴ组（〉60.0 g）种蛋的蛋重均值、纵径均值、横径均值、蛋形指数均值、受精率、入孵蛋孵化率、受精蛋孵化率和雏鸡初生重均最大,分别为（61.03±0.82）g、（58.13±1.68）mm、（44.59±0.79）mm、（1.31±0.05）、98.15%、85.19%、86.79%和（42.48±1.98）g;Ⅱ组（45.1-50.0 g）的健雏率最高,为96.09%;Ⅰ组（≤45.0 g）的雏鸡初生重占入孵蛋重的百分比最大,为（69.91±2.71）%;蛋重与纵径、横径、蛋形指数呈极显著正相关（P〈0.01）。因此,蛋重和蛋形指数对拉萨白鸡种蛋的孵化率影响较大,应选择较大种蛋（〉45.0 g）,蛋形指数的范围则较宽,在≥1.27时即可以达到较理想的孵化效果。
|
Effect of EggWeight and Egg Shape Index on Incubation of Breeding Eggs of LhasaWhite Chicken |
| |
| Abstract: | The aim of the present study was to investigate the effect of egg weight and egg shape index（longitudinal diameter/transverse diameter） on incubation of breeding eggs of Lhasa white chicken. Hatching eggs were selected from the 47-week-old Lhasa white chicken of the third generation. The eggs were grouped according to their weight and were incubated under the same condition. The egg shape index of groupⅠ（egg weight ≤45.0 g）, group Ⅱ（egg weight ranged from 45.1 g to 50.0 g）, group Ⅲ（egg weight ranged from 50.1 g to 55.0 g）, group Ⅳ（egg weight ranged from 55.1 g to 60.0 g）, and group Ⅴ（egg weight 60.0 g） was（1.27±0.05）,（1.27±0.05）,（1.27±0.05）,（1.28±0.05）, and（1.31±0.05）, respectively. The results showed that the average value of longitudinal diameter, transverse diameter and egg shape index, fertility rate, hatching rate of breeding eggs and fertilized eggs, and birth weight of chicks were elevated with the increase of breeding eggs weight. The highest values of the above indexes were all observed in groupⅤwhich had the highest average egg weight of（61.03±0.82）g, and they were（58.13±1.68）mm,（44.59±0.79）mm,（1.31±0.05）, 98.15%, 85.19%, 86.79%, and（42.48±1.98） g, respectively. The highest healthy chick rate（96.09%） was found in group Ⅱ. The highest ratio of chick birth weight to breeding egg weight was observed in group Ⅰ（69.91±2.71）%]. The egg weight had extremely significantly positive correlation with longitudinal diameter, transverse diameter and egg shape index（P〈0.01）. In conclusion, the egg weight and egg shape index have great effect on incubation of breeding eggs of Lhasa white chicken; eggs with higher weight（45.0 g） are recommended; the appropriate range of egg shape index is relatively wider, and a satisfied incubation effect will achieve when the egg shape index is higher than 1.27. |
| |
| Keywords: | |
|
| 点击此处可从《畜牧与饲料科学》浏览原始摘要信息 |
| 点击此处可从《畜牧与饲料科学》下载免费的PDF全文 |
|
