不同CBI日粮对牦牛瘤胃发酵参数、血清生化指标和养分消化率的影响  

Effects of Different CBI Diets on Rumen Fermentation Parameters,Serum Biochemical Indices and Nutrient Digestibility of Yak

作　　者：周亚楠 夏洪泽 刘书杰[1,2,3] 孙璐 崔占鸿[1,2,3] 周磊[4] 周玉青 ZHOU Ya-nan;XIA Hong-ze;LIU Shu-jie;SUN Lu;CUI Zhan-hong;ZHOU Lei;ZHOU Yu-qing(Qinghai University Academy of Animal Husbandry and Veterinary Sciences,Xining,Qinghai Province 810016,China;Yak Engineering Technology Research Center of Qinghai Province,Xining,Qinghai Province 810016,China;Key Laboratory of Plateau Grazing Animal Nutrition and Feed Science of Qinghai Province,Xining,Qinghai Province 810016,China;Haibei Tibetan Autonomous Prefecture Plateau Ecological animal Husbandry science and technology Demonstration Park management committee,Haiyan,Qinghai Province 810016,China)

机构地区：[1]青海大学畜牧兽医科学院,青海西宁810016 [2]青海省牦牛工程技术研究中心,青海西宁810016 [3]青海省高原放牧家畜动物营养与饲料科学重点实验室,青海西宁810016 [4]海北藏族自治州高原生态畜牧业科技示范园管委会,青海海晏810016

出　　处：《草地学报》2022年第8期2217-2222,共6页Acta Agrestia Sinica

基　　金：青海省科技厅项目(2020-QY-220)资助。

摘　　要：本试验旨在探究不同碳水化合物平衡指数(Carbohydrate balance index,CBI)日粮对牦牛瘤胃发酵参数、血清生化指标和养分消化率的影响,选取3种不同CBI(1.17,2.45,5.67)日粮,采用3×3拉丁方试验设计,通过一系列指标测定,明确牦牛最优日粮CBI水平。结果表明:不同CBI牦牛日粮瘤胃发酵参数均不显著;CBI=1.17与CBI=5.67牦牛日粮的白蛋白/球蛋白差异不显著,但均显著高于CBI=2.45的牦牛日粮(P<0.05);CBI=2.45牦牛日粮干物质消化率、蛋白质消化率显著高于CBI=1.17和CBI=5.67(P<0.05);CBI=2.45与CBI=5.67牦牛日粮的中性洗涤纤维消化率差异不显著,但均显著高于CBI=1.17(P<0.05)。综上所述:牦牛日粮的CBI=2.45更有利于其瘤胃发酵和养分消化利用。This study aimed to explore the different carbohydrate balance index(CBI)of diets on rumen fermentation parameters,serum biochemical parameters and nutrient digestibility in yak.Three different CBI(1.17,2.45,5.67)diets were selected,and the 3×3 Latin square test design was adopted,a series of indicators were measured to clarify the optimal CBI level of the yak.There were no differences in ruminal fermentation parameters of different CBI yak diets.There was no difference in albumin/globulin between CBI=1.17 and CBI=5.67,but they were significantly higher than that of CBI=2.45 yak diets(P<0.05).The results showed:dry matter digestibility of CBI=2.45 yak diet and crude protein digestibility were significantly higher than that of CBI=1.17 and CBI=5.67 yak diet;there was no difference in neutral detergent fiber digestibility of CBI=2.45 and CBI=5.67 yak diet,they were significantly higher than that of the yak diet with CBI=0.49;there were no differences in ether extract digestibility,acid detergent fiber digestibility and starch digestibility of different CBI diets.In summary,it is more conducive to rumen fermentation and nutrient digestion and utilization when the CBI of the yak diet is 2.45.

关 键 词：牦牛 碳水化合物平衡指数 消化率 瘤胃发酵参数 血清生化指标 

分 类 号：S823.85[农业科学—畜牧学]