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Direct and correlated responses to selection for weaning weight and postweaning gain in Hereford cattle



Direct and correlated responses to selection for weaning weight and postweaning gain in Hereford cattle



Dissertation Abstracts International, B Sciences and Engineering 46(2): 361



Lines of Hereford cattle were derived from a common foundation population by selecting bulls within sire families for increased weaning weight (line WWL) or increased postweaning gain (PGL); the control line was randomly selected. Data were analysed on 2467 progeny produced in 1967-81 by 125 sires and 922 dams. Selection for weaning weight or postweaning gain improved both traits. However, both traits were increased faster by selection for postweaning gain than selection for weaning weight.

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Accession: 001336839

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