Data/hora: 01/06/2024 10:08:57

Provedor de dados: | 96
País: | Brazil
Título: | Environmental effects and repeatability of the follicular diameter in mares
Autores: | Rua,Miguel Alejandro Silva; Quirino,Celia Raquel; Matos,Luis Fonseca; Rodrigues,Ana Cláudia Cerqueira; Bartholazzi Junior,Aylton.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | Female; Horse; Reproduction.
Resumo: | ABSTRACT The objective of this study was to evaluate the effect of environment on follicular diameter and repeatability of the size of preovulatory follicles of mares. Temperature, rainfall, and photoperiod were measured, and their effects were evaluated on follicular dynamics. Data were studied by analysis of variance of follicular size and environment traits. During the five years, 7% double ovulations and 159 anovulatory follicles were recorded. Mean preovulatory follicle diameters of left and right ovaries were 39.3±3.8 and 39.2±3.5 mm respectively. There was no effect of evaluation year on follicular diameter. Reproduction season affected the right preovulatory follicle diameter. There was no effect of temperature and rainfall on follicular diameter. Repeatability values of the preovulatory follicular diameter were low. In the subtropical climate studied, temperature and rainfall caused no effect on follicular dynamics, and photoperiod had only a small effect on dominant preovulatory follicular diameter. Repeatability of follicular diameter was low, so this characteristic should be evaluated daily to predict ovulation and the optimal time to inseminate mares.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100605
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/rbz4820190047
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.48 2019
Fonte: | info:eu-repo/semantics/openAccess