Data/hora: 06/06/2024 04:28:26

Provedor de dados: 	19	
País: 	Japan	
Título: 	Seasonal changes in serum progesterone levels in Thoroughbred racehorses in training	
Autores: 	TAKAHASHI, Yuji; AKAI, Makoto; MURASE, Harutaka; NAMBO, Yasuo.	
Data: 	2015	
Ano: 	2015	
Palavras-chave: 	Racehorse; Progesterone; Seasonal change.	
Resumo: 	The objective of the present study was to verify the seasonal luteal activity of racehorses in training in Japan from March to August. We allocated 102 horses into a luteal activity group and non-luteal activity group. The luteal activity group included horses with serum progesterone levels that were consistently &gt;1 ng/ml and changed by ± 1 ng/ml. In contrast, the progesterone levels of the non-luteal activity group were consistently &lt;1 ng/ml. In late spring (from May 1 to June 30) and summer (from July 1 to August 31), the percentage of horses in the luteal activity group was significantly higher than in early spring (from March 1 to April 30, P&lt;0.01). These findings demonstrate clear seasonal variations in ovarian activity. The present study also suggest that training for a race may not affect ovarian activity in female racehorses.	
Idioma: 	Inglês	
Identificador: 	http://ir.obihiro.ac.jp/dspace/handle/10322/4290	
Editor: 	Japanese Society of Equine Science	
Fonte: 	This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License &lt;http://creativecommons.org/licenses/by-nc-nd/3.0/&gt;.