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Características seminais e fertilidade em garanhões

Authors: Fernandes, Carlos Eurico; Pimentel, Cláudio Alves;

Características seminais e fertilidade em garanhões

Abstract

O objetivo deste experimento foi verificar o efeito da qualidade seminal e sua relação com a fertilidade no garanhão. Os dados foram obtidos de sete haras, incluindo 1198 éguas, 2013 ciclos e 3817 serviços, durante três temporadas consecutivas. A porcentagem de prenhez (P), porcentagem de prenhez por ciclo (P/C) e de serviço (P/S), estimadas para cada garanhão, foram usadas como variáveis dependentes. Adicionalmente, verificou-se o efeito da idade (<15 ou >15 anos) e categoria reprodutiva da égua (lactação, falhada ou virgem), sobre os índices reprodutivos. Garanhões com total de espermatozóides viáveis no ejaculado superior a 1,8 x 10(9), motilidade não inferior a 50% e percentual de normais acima de 60% (n=20) apresentaram melhor P (86% vs. 74%, p<0,01), P/C (54% vs. 45%), p<0,01) e P/S (28% vs. 22%, p<0,01) em relação aos garanhões cujas características foram inferiores (n=16). O percentual de espermatozóides normais correlacionou-se à P (0,33), P/C (0,50) e P/S (0,36), respectivamente. Além de a qualidade seminal, a idade e a categoria reprodutiva das éguas afetaram a fertilidade do garanhão. Esses resultados levam à conclusão de que a qualidade seminal interfere na fertilidade do garanhão; entretanto, outros fatores associados ao manejo reprodutivo, como a idade e a categoria reprodutiva das éguas, são importantes na relação entre qualidade seminal e fertilidade.

Keywords

fertility, garanhão, stallion, S, Agriculture (General), semen, Agriculture, S1-972, sêmen, fertilidade

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
Green
gold