›› 2018, Vol. 45 ›› Issue (1): 171-177.doi: 10.16431/j.cnki.1671-7236.2018.01.022

Previous Articles     Next Articles

Research Progress on Influencing Factors and Endocrine Regulation Mechanism of Broodiness in Poultry

YAN Pei, LIAO Juan, WANG Gang, QIAN Fanke, YU Shigang   

  1. Engineering Research Center of Sichuan Province Higher School of Local Chicken Breeds Industrialization in Southern Sichuan, Leshan Normal University, Leshan 614000, China
  • Received:2017-05-08 Online:2018-01-20 Published:2018-01-20

Abstract:

The broodiness is essential to breeding in domestic fowl, which can lead to the decrease of egg production. As the heritability of broodiness is low, it is impacted by three factors,environment, endocrine and genetics. The photoperiod, temperature and feeding management had significant effect on broodiness. Reproductive endocrine hormones such as GnRH, PRL, FSH, LH, P4 and E2 play a very important role in broodiness. The genetic mechanism is a major determinant for broodiness in poultry. The researches of candidate gene of broodiness is based on broodiness-related endocrine hormones. With the development of genome sequencing technology, a lot of new broodiness-related genes were identified by DNA sequencing. The discovery of new genes may provide an idea for the researches of molecular genetic mechanism. Until now, genetic mechanism of broodiness is not completely clear. The study on the genetic mechanism of broodiness will greatly improve the laying performance of poultry, and benefit for the protection, exploitation and utilization of the local domestic fowl breeds. The researches of environmental, endocrine and genetic in the regulation of broodiness were summarized in this paper to discuss the occurrence and regulation mechanism of broodiness in domestic fowl.

Key words: domestic fowl; broodiness; hormone; gene

CLC Number: