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Zootecnia e Tecnologia e Inspeção de Produtos de Origem Animal • Arq. Bras. Med. Vet. Zootec. 57 (4) • Aug 2005 • https://doi.org/10.1590/S0102-09352005000400013 linkcopy

Open-access Maternal and individual heterosis for preweaning daily gain in Nellore × Hereford and Nellore × Angus cattle

AuthorshipSCIMAGO INSTITUTIONS RANKINGS

    Data on 62.985 Nellore, Hereford, Angus and Nellore × Angus and Nellore × Hereford crossbred calves were analyzed to estimate maternal and individual heterosis for preweaning daily weight gain (PWD). The individual and maternal heterosis of average daily weight gain showed improvements of 6.2 and 11.2% for PWD of F1 calves and for calves borne from F1 dams. Maternal heterosis corresponded to 64.5% of total heterosis. Bos taurus × Bos indicus crossbred cattle have a PWD larger than the average of purebred cattle.

    beef cattle; crossbreeding; additive effect; non-additive effect

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    Universidade Federal de Minas Gerais, Escola de Veterinária Caixa Postal 567, 30123-970 Belo Horizonte MG - Brazil, Tel.: (55 31) 3409-2041, Tel.: (55 31) 3409-2042 - Belo Horizonte - MG - Brazil
    E-mail: abmvz.artigo@gmail.com
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