Prolactin regulation of testicular development and sexual behavior in yearling Suffolk rams

Autor:	K.A. Dickson, L.M. Sanford
Rok vydání:	2008
Předmět:	Libido medicine.medical_specialty Testicular growth Biology Body weight Prolactin Bromocriptine Blood prolactin Animal science Endocrinology Food Animals Sexual behavior Internal medicine medicine Animal Science and Zoology Testosterone medicine.drug
Zdroj:	Small Ruminant Research. 77:1-10
ISSN:	0921-4488
DOI:	10.1016/j.smallrumres.2008.01.008
Popis:	The aim of this study was to determine how the yearly prolactin rhythm might affect the sexual development of Suffolk rams (latitude 50°N). Five rams were injected daily with bromocriptine (35–45 μg kg −1 body weight) for 1 year, beginning in January (early winter) when rams were 11 months of age. Five control rams each received daily injections of the vehicle. In the controls, blood prolactin was −1 in winter, increased ( P −1 after the spring equinox, and remained high during summer before declining ( P −1 at the autumn equinox. Suppression of the seasonal rise in prolactin secretion with bromocriptine slowed testicular growth (50%; P P P P P P
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::99cab3d2f970dfa8fd35e603de142ea8 https://doi.org/10.1016/j.smallrumres.2008.01.008 Zobrazit plný text záznamu Full Text from ScienceDirect