摘要
本文报道了哈尔滨奶牛场发生的以并嗜、跛行等为特征的乳牛疾病的调查研究,分析研究了日粮成分、临床表现、血清钙、无机磷、镁和羟脯氨酸的浓度及尾椎 X 线骨密度测定值。结果表明,本病主要是由于日粮中磷、镁供给不足,钙过量,钙磷比例太宽所引起的骨营养不良。并讨论了乳牛血液生化指标的变化和尾椎骨密度测定法对诊断和监测牛群骨营养不良以及钙、磷、镁代谢动态的意义。
The cows'disease at the Harbin Dairy Farm charcterized by pica,lameness was investi-gated.The composition of the ration,clinical symptoms,concentrations of serum calcium,inorganic phosphorus,magnesium and hgdroxyproline,and the value of caudal bone densitymeasured by x-ray were analysed.The results showed that the disease was a kind ofosteodystrophia due mainly to a deficiency of phosphorus and magnesium and an exeessiveratio between calcium and phosphorus.The significance of the changes of biochemical indexin blood and the method of measuring caudal bone density in diagnosing and predictingosteodystrophia and metabolic dynamics of calcium,phosphorus and magnesium in herdswere also discussed.
关键词
奶牛
骨营养不良
钙
磷
镁
dairy cow
osteodystrophia
calcium
phosphorus
magnesium
hydroxyproline
bone density
