日粮阴阳离子平衡对热应激奶牛血液生化指标的影响

中国畜牧兽医 ›› 2014, Vol. 41 ›› Issue (9): 95-100.

日粮阴阳离子平衡对热应激奶牛血液生化指标的影响

臧长江^1,2, 张俊瑜^2,4, 王连群^2,3, 郭同军^2,4, 卜登攀², 周振峰²

1. 新疆农业大学动物科学学院, 新疆肉乳用草食动物营养实验室, 新疆乌鲁木齐 830052;
2. 中国农业科学院北京畜牧兽医研究所, 动物营养学国家重点实验室, 北京 100193;
3. 塔里木大学动物科学学院, 新疆阿拉尔 843300;
4. 新疆畜牧科学院饲料研究所, 新疆乌鲁木齐 830000

收稿日期:2014-05-20 出版日期:2014-09-20 发布日期:2014-09-24
通讯作者: 卜登攀 E-mail:burdenpan@gmail.com
作者简介:臧长江（1978- ），男，新疆人，博士，讲师，研究方向：动物营养与饲料科学。
基金资助:
新疆肉乳用草食动物营养实验室开放课题。

Effects of Dietary Cation-anion Balance on Blood Biochemical Parameters of Heat Stressed Lactation Dairy Cows

ZANG Chang-jiang^1,2, ZHANG Jun-yu^2,4, WANG Lian-qun^2,3, GUO Tong-jun^2,4, BU Deng-pan², ZHOU Zhen-feng²

1. Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China;
2. State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
3. College of Animal Science, Tarim University, Alar 843300, China;
4. Feed Research Institute, Xinjiang Academy of Animal Sciences, Urumqi 830000, China

Received:2014-05-20 Online:2014-09-20 Published:2014-09-24

摘要/Abstract

摘要： 试验旨在研究日粮阴阳离子平衡（dietary cation-anion balance，DCAB）对热应激条件下奶牛血液生化指标的影响。采用随机完全试验设计，选取75头健康的泌乳中期（104.8 DIM±12 DIM）中国荷斯坦奶牛，根据胎次、产奶量、体重相近的原则随机分为5组，试验Ⅰ、Ⅱ、Ⅲ、Ⅳ组和对照组分别饲喂DCAB值为195.76、186.68、177.77、166.94、239.12 mEq/kg DM的日粮。试验期为67 d，其中预试期7 d，正试期60 d。结果表明，试验Ⅰ、Ⅱ组的O₂分压与试验Ⅲ、Ⅳ组和对照组相比，均有显著提高（P<0.05），但DCAB对P_CO₂、pH、HCO₃^-、TCO₂、SATO₂影响差异不显著（P>0.05）；DCAB对奶牛血清中肌酸磷酸激酶（CK）产生了显著的影响（P<0.05），试验Ⅰ、Ⅱ组与试验Ⅲ、Ⅳ组和对照组相比，均有不同程度的降低，DCAB对奶牛血清中谷丙转氨酶（GPT）的影响差异不显著（P>0.05），但试验Ⅰ、Ⅱ组与试验Ⅲ、Ⅳ组和对照组相比，均有不同程度的升高，分别为13.98%、15.99%、10.77%和4.55%、6.40%、1.61%。奶牛血清中T4、T3、COR的浓度受DCAB的影响差异不显著（P>0.05），但对奶牛血清中尿素氮的浓度有显著影响（P<0.05），随着日粮DCAB值的升高，血清中尿素氮的浓度呈上升趋势，试验Ⅰ组最高。综合上述指标，在热应激条件下，泌乳中期奶牛饲喂DCAB值为186.68～195.76 mEq/kg DM的日粮时对改善其健康较为适宜。

关键词: 日粮阴阳离子平衡; 热应激; 奶牛; 血液; 生化指标

Abstract: The objective of the present study was to investigate the effects of dietary cation anion balance on blood biochemical parameters of heat stressed lactation dairy cows. 75 middle lactation (104.8 DIM±12 DIM) China Holstein cows were used in a randomized complete block design into five groups with similar parity, milk yield and weight, the groups Ⅰ, Ⅱ, Ⅲ, Ⅳ and control group were adjusted the DCAB value by providing with different level cation-anion salt, which were 195.76, 186.68, 177.77, 166.94 and 239.12 mEq/kg DM. The experiment was conducted for 67 days, including a 7 day adaptation period and a 60 day treatment period. The results showed that: compared with the groups Ⅲ, Ⅳ and control, the P_O₂ of the groups Ⅰ, Ⅱ have increased that were significantly different (P<0.05);the effect of DCAB on dairy cows P_CO₂,pH,HCO₃^-,TCO₂,SAT_O₂ in blood was not significant difference (P>0.05). Compared with the groups Ⅲ, Ⅳ and control group, the groupsⅠ, Ⅱcreatine phosphokinase (CK) in serum have decreased, the effect of DCAB on creatine phosphokinase (CK)in serum was significant difference (P<0.05); the glutamic-pyruvic transaminase (GPT) in serum have increased, which increased 13.98%, 15.99%, 10.77% and 4.55%, 6.40%, 1.61%,respectively, but there were not significant difference (P>0.05). The content of T4, T3 and COR in serum were not significantly affected by change the DCAB value (P>0.05),but effect of DCBA on the content of urea nitrogen in serum was significant difference (P<0.05), the concentrations of urea nitrogen in serum have an increasing trend,with increasing DCAB values, concentrations of urea nitrogen in group Ⅰ was the highest. Therefore, comprehensive index above, under the condition of heat stress, middle lactation cows feeding DCAB value of 186.68 to 195.76 mEq/kg DM diet is more suitable to improve its health.

Key words: dietary cation-anion balance; heat stress; dairy cows; blood; biochemical parameters

中图分类号:

S823.9⁺1

臧长江, 张俊瑜, 王连群, 郭同军, 卜登攀, 周振峰. 日粮阴阳离子平衡对热应激奶牛血液生化指标的影响[J]. 中国畜牧兽医, 2014, 41(9): 95-100.

ZANG Chang-jiang, ZHANG Jun-yu, WANG Lian-qun, GUO Tong-jun, BU Deng-pan, ZHOU Zhen-feng. Effects of Dietary Cation-anion Balance on Blood Biochemical Parameters of Heat Stressed Lactation Dairy Cows[J]. , 2014, 41(9): 95-100.

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