Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada.
Department of Animal Biosciences, University of Guelph, Guelph, ON, N1G 2W1, Canada.
Anim Reprod Sci. 2020 Feb;213:106257. doi: 10.1016/j.anireprosci.2019.106257. Epub 2019 Dec 14.
Chicken meat production relies on successful reproduction in broiler breeders. Challenges with feed restriction and metabolic dysregulation of reproduction in broiler breeders warrant conducting further research and developing of new management strategies in broiler production enterprises. This review, therefore, provides an overview of the underlying mechanisms of egg production and its (dys)regulation in broiler breeders and how management regimens affect these mechanisms. The review addresses the current knowledge of diurnal processes in sexually mature hens and the maturation process before the onset of diurnal cycles of reproduction. The important factors related to seasonal changes in reproduction are addressed, and two main factors involved, photorefractoriness and metabolic status, are highlighted. In addition, with this review it was ascertained that there is a lack of knowledge with relation to the current metabolic problems in broiler breeders.
鸡肉生产依赖于肉鸡种鸡的成功繁殖。肉鸡种鸡在饲料限制和繁殖代谢失调方面面临挑战，这需要在肉鸡生产企业中进行进一步的研究和开发新的管理策略。因此，本综述提供了肉鸡种鸡产蛋及其（失调）调节的潜在机制的概述，以及管理方案如何影响这些机制。本综述涉及性成熟母鸡的昼夜过程的当前知识，以及在昼夜繁殖周期开始之前的成熟过程。讨论了与繁殖季节性变化相关的重要因素，并强调了两个主要因素，即光感受性和代谢状态。此外，通过本综述还确定，目前肉鸡种鸡存在代谢问题，而对此方面的知识还很缺乏。
