Nuturitional Conditions of the Dams and the White Scour of Calf in Japanese black cattle

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  • 黒毛和種繁殖母牛の栄養状態と子牛白痢の発生
  • クロゲワシュ ハンショク ハハウシ ノ エイヨウ ジョウタイ ト コウシ ハク

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Abstract

A metabolic profile test after parturition was performed on Japanese black dams of 7 farms, from days 8 to 99 (stage I), from days 100 to 199 (stage II) and, from days 200 or later (stage III). In group A (41 dams of 3 farms) given corn silage throughout the year, the calves experienced frequent occurrence of white scour and the dams showed abnormalities in rumen conditions and decreased fat metabolism through the stages I to III. In group B (22 specimens of 2 farms) given corn silage except the stage I after parturition many cases ofthe disease were observed in calves, and energy balance remained lower at the stage I and fat metabolism deteriorated over the stages I to II in dams. The results suggested that decreased fat metabolism in dams during the stage I was relative to the occurrence of white scour in calves.

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