Deferred bulls: are cycles per conception and pregnancy rate determined by the type of spermiogramme deviation under natural mating?

 

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Detalles Bibliográficos
Autores: Navarro, Leonel, Chacón Calderón, Jorge
Formato: artículo
Fecha de Publicación:2016
Descripción:Deferred bulls undergo clinical deviations that could be transitory or have an uncertain potential fertility output. Data in Costa Rica showed no significant differences in conception rate (CR) between sound vs. deferred sires (DS), although it was 5% lower in the latter group (Navarro et al., Rep. Dom. Animals, 43, Suppl:3, 2008). Decreased potential fertility in (DS) could be concealed by using multiple sired breeding and/or when the mating season length allows many estrous cycles/cow. When impaired semen quality justified the deferred classification, the fertility output could be influenced by the type of spermiogramme abnormality. We aimed to determine whether the rate cycles/conception, as well as CR achieved by DS diverge according to the type of spermiogramme deviation under natural mating in tropical cattle farms.
País:Repositorio UNA
Institución:Universidad Nacional de Costa Rica
Repositorio:Repositorio UNA
Lenguaje:Inglés
OAI Identifier:oai:null:11056/23119
Acceso en línea:http://hdl.handle.net/11056/23119
https://doi.org/10.1016/j.anireprosci.2016.03.076
Palabra clave:COSTA RICA
TORO
BULLS
REPRODUCCIÓN ANIMAL
ANIMAL REPRODUCTION
ESPERMATOZOIDES
SPERM
espe