动物营养学报2013，Vol.25Issue(4)：856-863,8.DOI:10.3969/j.issn.1006-267x.2013.04.025
饲粮阴阳离子差对围产期奶牛酸碱平衡、血浆钙浓度及抗氧化应激的影响
Effects of Dietary Cation-Anion Difference on Acid-Base Balance,Plasma Calcium Concentration and Anti-Oxidative Stress of Peripartum Dairy Cows
摘要
Abstract
This experiment was conducted to evaluate the effects of dietary cation-anion difference (DCAD) level on acid-base balance, plasma calcium concentration and anti-oxidative stress of peripartum dairy cows. Thirty-nine Holstein antepartum cows (28 d) with the same age and body weight were allocated into 3 groups and 13 cows per group. Cows were fed 3 experimental diets with DCAD levels at +175, -35 and -183, respectively. Anionic salts were supplemented to reduce DCAD level. The experiment lasted for 60 days with 10 days adaptation and 50 days trial duration. The results showed that reducing DCAD level could decrease urine pH (P < 0.05) and increase plasma calcium concentration (P < 0. 05). There were no significant effects on plasma anti-oxidative stress indices among 3 groups (P > 0.05). The milk yield and contents after parturition were unaffected by antepartum DCAD level (P >0.05). The results indicate that reducing antepartum DCAD level of dairy cows can decrease urine pH, and keep plasma calcium stabilization, but has no effect on anti-oxidative stress capacity.关键词
饲粮阴阳离子差/血浆钙/抗氧化应激/围产期奶牛Key words
dietary cation-anion difference/ plasma calcium/ anti-oxidative stress/ peripartum dairy cows分类
农业科技引用本文复制引用
吴文旋,段永邦,李胜利..饲粮阴阳离子差对围产期奶牛酸碱平衡、血浆钙浓度及抗氧化应激的影响[J].动物营养学报,2013,25(4):856-863,8.基金项目
国家自然科学基金(31160468) （31160468）
动物营养学国家重点实验室开放课题(2004DA125184F1115) （2004DA125184F1115）
