Exames andrológicos em bovinos
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A sustentabilidade de uma exploração agropecuária depende do volume de produção
de bezerros com vista a serem vendidos. O papel desempenhado pelo macho é decisivo na
medida em que um único indivíduo será responsável pela cobrição de um elevado número de
fêmeas, por isso, a aptidão reprodutiva deste é mais importante do que a fertilidade de cada
vaca em particular. Machos inaptos ou questionáveis para reprodução que não sejam
diagnosticados com a necessária antecedência poderão representar prejuízos de monta. Assim,
torna-se muito importante que seja avaliada anualmente a aptidão reprodutiva destes através
de um exame andrológico completo. Esta dissertação aborda a importância da eficiência
reprodutiva para a gestão eficaz de explorações agropecuárias, bem como algumas das
principais doenças que afetam a aptidão reprodutiva dos bovinos. Apresenta e caracteriza o
exame andrológico. Por fim, mostra um estudo empírico no qual foram realizados exames
andrológicos em bovinos no âmbito do estágio em Medicina Veterinária.
The sustainability of livestock farming depends on the volume of production of calves to be sold. The role played by the male is decisive once that a single individual will be responsible for the mounting in copulation of many females, so the its reproductive efficiency is more important than the fertility of each cow. Unfit or questionable males for breeding that are not diagnosed early enough may represent major losses. Thus, it is very important that the reproductive efficiency of these males is evaluated annually through a detailed Breeding Soundness Evaluation (BSE). This dissertation addresses the importance of reproductive efficiency for the effective management of livestock farming as well as some of the major diseases that affect the reproductive efficiency of cattle. It presents and characterizes the Breeding Soundness Evaluation (BSE). Finally, it shows an empirical study in which andrological examinations were carried out in cattle during the Veterinary Medicine training.
The sustainability of livestock farming depends on the volume of production of calves to be sold. The role played by the male is decisive once that a single individual will be responsible for the mounting in copulation of many females, so the its reproductive efficiency is more important than the fertility of each cow. Unfit or questionable males for breeding that are not diagnosed early enough may represent major losses. Thus, it is very important that the reproductive efficiency of these males is evaluated annually through a detailed Breeding Soundness Evaluation (BSE). This dissertation addresses the importance of reproductive efficiency for the effective management of livestock farming as well as some of the major diseases that affect the reproductive efficiency of cattle. It presents and characterizes the Breeding Soundness Evaluation (BSE). Finally, it shows an empirical study in which andrological examinations were carried out in cattle during the Veterinary Medicine training.
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Orientação: Carlos Manuel Varela Bettencourt