Effect of photoperiod on serum hormone concentrations during the annual reproductive cycle in geese

The poor egg-laying rate of geese hinders the development of the goose industry; therefore, the reproductive performance of geese is an important area of investigation. To evaluate the relationship between photoperiod, reproductive hormones, and reproductive activity during the egg-laying cycle in g...

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Bibliographic Details
Published in:Genetics and molecular research 2017-03, Vol.16 (1)
Main Authors: Zhao, X Z, Gao, G L, Wang, H W, Li, Q, Zhang, K S, Zhong, H, Wang, Q G
Format: Article
Language:English
Subjects:
Animals
Estradiol - blood
Female
Follicle Stimulating Hormone - blood
Geese - blood
Gonadotropin-Releasing Hormone - blood
Gonadotropins - blood
Hormones - blood
Luteinizing Hormone - blood
Ovary - physiology
Photoperiod
Prolactin - blood
Reproduction - physiology
Vasoactive Intestinal Peptide - blood
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Summary:The poor egg-laying rate of geese hinders the development of the goose industry; therefore, the reproductive performance of geese is an important area of investigation. To evaluate the relationship between photoperiod, reproductive hormones, and reproductive activity during the egg-laying cycle in geese under natural conditions, we collected blood samples from Sichuan white geese and Xupu geese to quantify changes in prolactin (PRL), estradiol (E2), vasoactive intestinal polypeptide (VIP), follicle stimulating hormone (FSH), gonadotropin-inhibitory hormone (GnIH), and luteinizing hormone (LH). We also calculated the rate of egg laying for the two populations during the egg-laying cycle. We show that the egg-laying rate and the serum concentration of some hormones (PRL, E2, VIP, FSH, GnIH, and LH) differed significantly between the two populations during the pre-laying, laying, and ceased-laying periods. Serum LH concentrations may be associated with maturation of the ovary and oviducts, whereas FSH, PRL, and GnIH play important roles in egg laying. These results provide a useful resource for future studies examining the laying rate in geese.
ISSN:1676-5680
1676-5680
DOI:10.4238/gmr16019266