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KMID : 1025520070490020239
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Journal of Animal Science and Technology
2007 Volume.49 No. 2 p.239 ~ p.244
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Effects of Weaning Age on Growth Performance, Feed intake, Disease Occurrence of Hanwoo Calves and Reproductive Efficiency of Dams
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Kwon Eung-Gi
Park Byung-Ki
Cho Young-Moo
Han Man-Hee
Choi C. Y.
Lee Myeung-Sik
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Abstract
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This study was conducted to investigate effects of weaning age on growth perforance, feed intake, disease occurrence and maternal reproductive efficiency in Hanwoo. Sixty experimental calves were allocated into two groups, early weaned (n=29, calf age 90 d, EW) and normally weaned (n=31, calf age 120 d, NW). Body weights and average daily gains during nursing and post-weaning periods were similar between two groups (p>0.05). Weaning age had no effect on calf starter, grass hay, dry matter, crude protein and TDN intakes of calves (p>0.05). Maternal calving interval in EW was shortened by 23 days compared to NW (p>0.05). Any difference in occurrence of disease was not observed between groups. Present results indicate that early weaning age has no negative effects on growth performance, feed intake or on disease occurrence in Hanwoo calves. And it has positive influence on maternal calving interval.
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KEYWORD
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Weaning age, Growth performance, Feed intake, Maternal reproductive efficiency, Hanwoo calf
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