草地学报

草地学报 ›› 2022, Vol. 30 ›› Issue (8): 2217-2222.DOI: 10.11733/j.issn.1007-0435.2022.08.034

• 技术研发 • 上一篇    

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

周亚楠1,2,3, 夏洪泽1,2,3, 刘书杰1,2,3, 孙璐1,3, 崔占鸿1,2,3, 周磊4, 周玉青4   

  1. 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
  • 收稿日期:2021-12-16 修回日期:2022-04-17 发布日期:2022-09-01
  • 通讯作者: 崔占鸿,E-mail:cuizhanhong27@126.com
  • 作者简介:周亚楠(1997-),女,汉族,河南项城人,硕士研究生,主要从事动物营养与饲料科学研究,E-mail:2321006032@qq.com;夏洪泽(1996-),男,汉族,吉林梨树人,硕士研究生,主要从事动物营养与饲料科学研究,E-mail:2290947926@qq.com
  • 基金资助:
    青海省科技厅项目（2020-QY-220）资助

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

ZHOU Ya-nan1,2,3, XIA Hong-ze1,2,3, LIU Shu-jie1,2,3, SUN Lu1,3, CUI Zhan-hong1,2,3, ZHOU Lei4, ZHOU Yu-qing4   

  1. 1. Qinghai University Academy of Animal Husbandry and Veterinary Sciences, Xining, Qinghai Province 810016, China;
    2. Yak Engineering Technology Research Center of Qinghai Province, Xining, Qinghai Province 810016, China;
    3. Key Laboratory of Plateau Grazing Animal Nutrition and Feed Science of Qinghai Province, Xining, Qinghai Province 810016, China;
    4. Haibei Tibetan Autonomous Prefecture Plateau Ecological animal Husbandry science and technology Demonstration Park management committee, Haiyan, Qinghai Province 810016, China
  • Received:2021-12-16 Revised:2022-04-17 Published:2022-09-01

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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。

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

Abstract: 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.

Key words: Yak, Carbohydrate balance index, Digestibility, Rumen fermentation parameters, Serum biochemical indices

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