Blood profiles and health in Holstein cows fed diets with varying cation-anion difference and calcium supplementation
Three blocks each of twelve Holstein cows beginning 21 days prepartum were randomly allocated to one of three treatments with varying dietary cation-anion difference (DCAD, mEq/kgDM) at +150 (HD), -100 (LD), and -100 plus calcium (LDCA) to investigate fluid acid-base balance, serum Ca, health status, and lactation performance. Feeding LD diets induced mild metabolic acidosis. Serum Ca in diet LD was higher (P＜0.05) than that in other two diets. Health disorder was lower in the two LD diets. Milk yield was unaffected (P＜0.05) by dietary treatments. It is indicated that negative DCAD was beneficial for blood calcium homeostasis and health status in Holstein periparturient cows.
dietary cation-anion calcium health Holstein cows
W.X.Wu Y.M.Wu J.X.Liu
Institute of Dairy Science, MOE Key Laboratory of Molecular Animal Nutrition, Zhejiang University Ha Institute of Dairy Science, MOE Key Laboratory of Molecular Animal Nutrition, Zhejiang University Ha
国际会议
The 7tb International Symposium on the Nutrition of Herbivores(ISNH-7)(第七届国际草食动物营养研讨会)
北京
英文
876-881
2007-09-16（万方平台首次上网日期，不代表论文的发表时间）