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当前位置: 首页 > 文章 > 不同日粮阴阳离子差对喀斯特地区围产期奶牛代谢、健康及泌乳性能的研究 畜牧兽医学报 2011,42 (8) 1113-1119
Position: Home > Articles > Metabolism,Health and Lactation Performance of Periparturient Cows Fed Diets with Varying Cation-anion Difference in Karst Area Chinese Journal of Animal and Veterinary Sciences 2011,42 (8) 1113-1119

不同日粮阴阳离子差对喀斯特地区围产期奶牛代谢、健康及泌乳性能的研究

作  者：
吴文旋;李胜利
单  位：
中国农业大学动物营养学国家重点实验室;贵州大学动物科学学院
关键词：
日粮阴阳离子差;代谢;健康状况;泌乳性能;围产期奶牛
摘  要：
试验旨在研究不同日粮阴阳离子差(DCAD)对喀斯特地区围产期奶牛体内代谢、健康状况及泌乳性能的影响。将30头荷斯坦经产干奶牛按照随机区组设计分为3组:对照组、试验1组和试验2组,其DCAD水平分别为+81、+20和-32 mmol.kg-1DM。结果表明:尿液pH随DCAD水平的降低而显著降低(P<0.05);试验2组血浆Ca、Cl水平显著高于对照组(P<0.05);血浆Na、K、P,葡萄糖、尿素氮浓度差异不显著(P>0.05);试验1组和试验2组低血钙、胎衣不下发生率较对照组低;各组奶牛对DMI、奶产量和奶成分影响不大(P>0.05)。结果提示,在喀斯特地区围产期奶牛日粮中添加阴离子盐是可行的,可引起奶牛体内代偿性轻度代谢酸中毒,增加血Ca水平,有利于改善健康状况,对奶牛产后泌乳性能影响不大。
译  名：
Metabolism,Health and Lactation Performance of Periparturient Cows Fed Diets with Varying Cation-anion Difference in Karst Area
作  者：
WU Wen-xuan1,LI Sheng-li2 (1.College of Animal Science,Guizhou University,Guiyang 550025,China;2.State Key Laboratory of Animal Nutrition,China Agricultural University,Beijing 100193,China)
关键词：
dietary cation-anion difference;metabolism;health status;lactation performance;periparturient cow
摘  要：
The objective of this study was to evaluate the body metabolism,health status and subsequent lactation performance of periparturient cows fed diets with varying cation-anion difference(DCAD) in Karst area.Thirty Holstein multiparious cows were randomly assigned to 3 blocks of 10 cows and were fed 1 of 3 diets with DCAD at +81,+20,and-32 mmol·kg-1 DM for control,treatment 1 and treatment 2,respectively.The results showed that feeding of lower DCAD reduced urine pH among 3 DCAD treatments(P<0.05).Plasma Ca and Cl levels were higher in treatment 2(P<0.05) compared with control.Dietary treatments did not alter plasma Na,K,and P,and glucose and urea nitrogen concentrations(P>0.05).Cows fed treatment 1 and treatment 2 had lower incidence of hypocalcemia and retained placenta over those fed control.Dry matter intake,milk yield and compositions were unaffected by dietary treatment(P>0.05).It is suggested that anionic salts supplementation in the dry-off diet for cows in Karst area is appropriate which may lead to mild metabolic acidosis,increase blood Ca level and improve health status,with non-significant impact on lactation performance.

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