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Karyotypic study of a canchim cattle herd

Antonio Junqueira Tambasco

Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA, Caixa Postal 339, 13560 São Carlos, SP, Brasil

ABSTRACT

A karyotypic study was conducted on 626 animals of a Canchim (5/8 Charolais + 3/8 Zebu) cattle herd using metaphase spreads obtained from peripheral blood lymphocyte cultures and G- and C-banding techniques. Eleven animals (1.76%), five of which were phenotypically normal, showed karyotype alterations. The results emphasize the need for karyotype analysis as a criterion for the selection of animals to be used for reproduction.

Keywords: Karyotypic; Canchim cattle.

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