GM 21. Early chromosomal diagnosis and reproductive management as tool to enhance production in bovines

• Oscar Vera ^[1] ; Pedro Bastidas ^[1] ; Gladys Muñoz ^[2]
  1. [1] Universidad Central de Venezuela

     Universidad Central de Venezuela

     Venezuela

     
  2. [2] Universidad Simón Bolívar

     Universidad Simón Bolívar

     Venezuela

     
• Localización: Archivos Latinoamericanos de Producción Animal, ISSN 1022-1301, ISSN-e 1022-1301, Vol. 5, Nº. Extra 3, 1997 (Ejemplar dedicado a: Proceedings XV ALPA meeting 2)
• Idioma: inglés
• Enlaces
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• Resumen

  • Reproductive efficiency is relevant in terms of meat and milk production. It is well known that chromosomal abnormalities could affect fertility. However, it has been described that 1/29 Robertsonian translocation doesnt disturb the fertility and seminal quality of the bull, and in previous studies we have demonstrated an incidence of 16.6 % and 26.7 % of carriers bulls. With the purpose to demonstrate if the reproductive management erradicate the chromosomal abnormalities, 96 bulls were evaluated from 3 centers, having an excellent control and selection of the bulls. The reproductive efficiency of these bulls had been between 90 %, 87 % and 86 %. In these conditions none of the animals revealed presence of chromosomal abnormalities, which demonstrated that early chromosomal diagnosis is the first alternative to erradicate chromosomal abnormalities, but the reproductive management and a strict selection of the bull could be also effective in a long term. It is convenient to use both tools in order to improve the animal production.