Physiology of Seasonal Breeding: A ReviewVasantha I*
Department of Physiology, NTR College of Veterinary Sciences, Gannavaram-521 102, Vijayawada, Andhra Pradesh, India
- Corresponding Author:
- Vasantha I
Department of Physiology, NTR College of Veterinary Sciences
Gannavaram-521 102, Vijayawada, Andhra Pradesh, India
E-mail: [email protected]
Received date: February 13, 2016; Acc date: April 21, 2016; Pub date: April 23, 2016
Citation: Vasantha I (2016) Physiology of Seasonal Breeding: A Review. J Veterinar Sci Techno 7:331. doi:10.4172/2157-7579.1000331
Copyright: © 2016 Vasantha I, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The different mammalian species show a wide diversity in methods of breeding. Some of them limit their reproductive activity to certain period of the year while some breed throughout the year. This is to avoid the unfavorable environmental conditions including the non-availability of feed, water, housing etc. However, the difference in breeding strategies lies in the central regulatory system the supra chiasmatic nucleus. It controls the circadian rhythm and the nocturnal drive of melatonin. There by the GnRH/LH are under the negative feedback influence of the oestrogen. Change in daylight period is the primary factors those onsets the breeding season. In addition to it, change in oestrogen concentration, neuropeptides, Kisspeptin, GnIH, Thyroid glands and many other environmental factors like availability of food, water, housing, space and climate also influence the onset of breeding.