畜牧兽医学报2011，Vol.42Issue(8)：1113-1119,7.
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
Metabolism, Health and Lactation Performance of Periparturient Cows Fed Diets with Varying Cation-anion Difference in Karst Area
摘要
Abstract
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.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Key words
dietary cation-anion difference/ metabolism/ health status/ lactation performance/ pe-riparturient cow分类
畜牧业引用本文复制引用
吴文旋,李胜利..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[J].畜牧兽医学报,2011,42(8):1113-1119,7.基金项目
国家自然科学基金(30901038) （30901038）
动物营养学国家重点实验室开放课题(2004DA125184F1115) （2004DA125184F1115）
贵州省农业科技攻关项目[黔科合NY字(2009)3085] （2009）
贵州省科学技术基金(黔科合J字[2008]2258) （黔科合J字[2008]2258）
贵州大学引进人才科研项目([2007]002) （[2007]002）
