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KMID : 0900919980220040303
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Korean journal of Animal Reproduction
1998 Volume.22 No. 4 p.303 ~ p.306
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The Effect Time of Feeding on Time of Parturition in Holstein Cows
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Lee Sang-Young
Jeon G. J.
Lim Young-Chul
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Abstract
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This study was carried out to investigate the effect of time of feeding to pregnant holstein cows on calving time during a day. The investigation revealed that feeding at 18:00∼04:30 resulted in 87.8%(9＋15h) and 80.7% (12＋12h) of the cows calving, whereas the traditional 08:00 and 18:00 feeding resulted in 57.9%(9＋15h) and 51.8%(12＋12h) of them calving during the day period(p＜0.001). Especially, between 06:00∼11:00 and 16:00∼17:00, 38.5% and 19.6% of cows calving during the day period were investigated.
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KEYWORD
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Parturition, Calving, Day period
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