Improving duckling hatchability and quality by optimization of egg turning angle during incubation

文献类型： 外文期刊

第一作者： Chen, Fang

作者： Chen, Fang;Zhu, Biwen;Guo, Binbin;Dai, Zichun;Ying, Shijia;Shi, Zhendan;Chen, Fang;Zhu, Biwen;Guo, Binbin;Dai, Zichun;Ying, Shijia;Shi, Zhendan;Zhu, Biwen;Huang, Yunmao;Shi, Zhendan

作者机构：

关键词： duck; egg turning angle; incubation; hatchability; growth performance

期刊名称：POULTRY SCIENCE （ 影响因子：3.8； 五年影响因子：4.1 ）

ISSN： 0032-5791

年卷期： 2024 年 103 卷 10 期

页码：

收录情况： SCI

摘要： Egg turning in incubation is crucial to the development of embryos and hatching performance. We aimed to develop a high performance duck egg incubation technique by enlarging and changing egg turning angles. Increasing turning angle from 45 to 75 degrees did not affect the embryo early mortality during the first 15 d of incubation, which ranged from 3.5 to 4.0%, but accelerated chorioallantoic membrane (CAM) development by 17 h, and significantly (P < 0.01) reduced the late mortality from 9.4 f 0.98% to 5.31 +/- 0.63%. As the result, fertile egg hatchability increased from 91.03 +/- 0.97% to 94.64 +/- 0.61% (P < 0.05), so was healthy duckling rate from 87.24 +/- 1.17% to 92.08 +/- 0.55% (P < 0.05), and duckling live weight from 60.74 +/- 0.63 g to 63.15 +/- 0.35 g < Changing turning angle from 75 degrees to 60 degrees during incubation d 15 to 25 further reduced late embryo mortality to 3.88 +/- 0.47 and increased hatchability to 96.58 +/- 0.68%. This changing angle turning hatched ducklings exhibited the highest growth performance during rearing than those hatched by 45 and 75 degrees egg turning. The enhanced growth rate was paralleled by upregulations of somatotropic axis genes mRNA expression levels of the hypothalamus GHRH, , liver GHR and IGF-1 during embryo incubation and duckling rearing. In conclusion, a changing angle egg turning incubation technique, 75 degrees in the first 15 d and 60 degrees thereafter, can enhance CAM development, upregulate somatotropic axis genes expressions, and can maximally improve embryo livability, duckling hatchability and growth performance.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序