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KMID : 1025520130550050381
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Journal of Animal Science and Technology
2013 Volume.55 No. 5 p.381 ~ p.388
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Comparative Analysis on Growth Performances, Behavioral Characteristics and Blood Parameters of the Sex in Different Group Sizes of Hanwoo calves
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Ha Jae-Jung
Oh Dong-Yep
Lee Jea-Young
Yang Ka-Young
Kim Jong-Bok
Ohh Sang-Jip
Song Young-Han
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Abstract
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This study examined the effects of sex in different group sizes of Hanwoo calves. The growth performance including the mean daily gain, feed conversion rate, behavioral characteristics, and blood parameters in Hanwoo calves were investigated. A total of 54 heads of Hanwoo calves were housed separately at 4 heads per group, 3 heads per group, and 2 heads per group per pen. In the heifer calves, except for those 10 months of age, the growth performance was improved by increasing the group size, which was similar to steer calves (p<0.05). The heifer calves housed in 3 heads group spent more time lying down (p<0.05). The steer calves spent more time standing in the 3 heads group, lying down (2 heads group), and walking (4 heads group). The heifer calves housed in 2 heads group had a lower frequency of drinking, self-grooming, pairwise grooming, and fighting (p<0.05). On the other hand, the steer calves in the 4 heads group had a higher frequency of drinking, rubbing, and fighting (p<0.05). The white blood cell and cortisol were highest in the heifer calves in the 2 heads group (p<0.05).
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KEYWORD
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Hanwoo calves, Group size, Growth performance, Behavioral characteristics, Blood parameters
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