Avaliação reprodutiva em novilhas à entrada em reprodução

  1. Rita Payan-Carreira 1
  2. Gustavo Paixão 1
  3. Miguel Quaresma 1
  4. Mercedes Camiña García 2
  1. 1 Centro de Ciência Animal e Veterinária, Universidade de Trás-os-Montes e Alto Douro
  2. 2 Departamento de Fisiologia, Facultad de Veterinaria Universidade de Santiago de Compostela
Revista:
Recursos rurais: revista oficial do Instituto de Biodiversidade Agraria e Desenvolvemento Rural ( IBADER )

ISSN: 1885-5547

Ano de publicación: 2017

Número: 13

Páxinas: 37-46

Tipo: Artigo

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Outras publicacións en: Recursos rurais: revista oficial do Instituto de Biodiversidade Agraria e Desenvolvemento Rural ( IBADER )

Resumo

Replacement heifers represent a long-term investment in cattle production, whether in dairy or beef systems, whose characteristics will affect the farm performance and economic success in the future, thereby deserving the farmer´s full attention. Still, only few farmers integrate the pre-breeding exam of replacement heifers in the farm´s reproductive management, particularly in beef cattle production. The pre-breeding exam is a crucial procedure, designed to guarantee the reproductive soundness of young females intend to be used in reproduction. In particular, the pre-breeding exam will allow to exclude the existence of congenital abnormalities of the genital tract that would compromise the heifer´ reproductive success. Depending on the breed, the pre-breeding exam can be performed at 12 to 14 months of age, or up to 30 to 60 days before the start of the reproductive season. A careful evaluation of those heifers allows not only to exclude the existence of congenital abnormalities, but also to assess the maturity of the genital tract and to ensure a decent performance in their first reproductive season. Breed should be taken into account, as it determines important reproductive traits, like age at puberty. This work intends to revise the diverse steps of the pre-breeding exam in replacement heifers and to determine the female´ estimated fertility.

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Fonte de datos: Dialnet