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Studies on improvement of Cheju native cattle by three-breed crossing. 2. Heterosis effects of two- and three-way crossbreds of Cheju cattle with Brahman, Santa Gertrudis, Charolais and Holstein



Studies on improvement of Cheju native cattle by three-breed crossing. 2. Heterosis effects of two- and three-way crossbreds of Cheju cattle with Brahman, Santa Gertrudis, Charolais and Holstein



Research Reports of the Rural Development Administration, Livestock 33(2): 6-10



For birth weight and preweaning weights at 3 and 6 months of age, heterosis in Brahman X Cheju and Santa Gertrudis X Cheju F1 cattle was generally negative, while in 3-breed crosses heterosis averaged 5.8% at birth, 14.1% at 3 months and 23.8% at 6 months. (For Pts I and III see pp. 1-5 and 11-15 resp. of the same number of the journal).

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