Hypocalcemia occurs in dairy cows at the time of parturition. After parturition, cows begin lactation, and large amounts of calcium are released into the milk. As a result, cows lose calcium from their blood after giving birth and may fall into this condition. Calcium should normally be replenished from feed and bones, but if metabolism in the body is insufficient, the cow will be unable to stand after giving birth, and will suffer from circulatory disorders and impaired consciousness. In this case, intravenous injection of a calcium agent (calcium borogluconate liquid) is effective. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
乳牛の分娩(ぶんべん)の際におこる低カルシウム血症。ウシは分娩後,泌乳を開始するが,牛乳中には大量のカルシウムが放出される。このため出産後のウシは血液中のカルシウムを失って本症に陥ることがある。カルシウムは本来飼料や骨から補充されるはずであるが,体内での代謝が不十分だと産後起立が不能になり,循環障害,意識障害をきたす。この場合カルシウム剤(ボログルコン酸カルシウム液)を静脈内に注射すると効果がある。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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