Acta Agrestia Sinica ›› 2023, Vol. 31 ›› Issue (10): 3194-3202.DOI: 10.11733/j.issn.1007-0435.2023.10.032

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Effect of Total Mixed Ration Pellet with Different Proportions of Corn Straw on the Digestive Characteristics,Ruminal Fermentation and Feed Efficiency of Small-tailed Han Sheep

SUN Yun1,2, JIANG Zai-hui3, XIE Hua-de4, KONG Dei-hui1,2, JIN peng5, SHAO Xin-qing6, CAO Yang1,2,7   

  1. 1. College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region Daqing, Daqing, Heilongjiang Province 163319, China;
    2. Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing, Heilongjiang Province 163319 China;
    3. TANGRENSHEN GROUP CO., LTD, Zhuzhou, Hunan Province 412000, China;
    4. Guangxi Zhuang Autonomous Region Buffalo Research Institute, Nanning, Guangxi Province 530001, China;
    5. Qiqihar Pengbo Feed Technology Co. LT, Qiqihaer, Heilongjiang Province 161032, China;
    6. College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China;
    7. Key Laboratory of Low-carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs P. R. China Daqing, Daqing, Heilongjiang Province 163319, China
  • Received:2023-04-17 Revised:2023-07-10 Online:2023-10-15 Published:2023-11-02

不同比例玉米秸秆全混合颗粒日粮对小尾寒羊的消化、瘤胃内发酵及生长性能的影响

孙芸1,2, 蒋再慧3, 谢华德4, 孔德慧1,2, 金鹏5, 邵新庆6, 曹阳1,2,7   

  1. 1. 黑龙江八一农垦大学动物科技学院, 黑龙江省寒区饲料资源高效利用与营养调控重点实验室, 黑龙江 大庆 163319;
    2. 粮食副产物加工与利用教育部工程研究中心, 黑龙江 大庆 163319;
    3. 唐人神集团股份有限公司, 湖南 株洲 412000;
    4. 广西壮族自治区水牛研究所, 广西 南宁 530001;
    5. 齐齐哈尔鹏博饲料科技有限公司, 黑龙江 齐齐哈尔 161032;
    6. 中国农业大学草业科学与技术学院, 北京 100193;
    7. 农业农村部东北平原农业绿色低碳重点实验室, 黑龙江 大庆 163319
  • 通讯作者: 曹阳,E-mail:hbdkcaoyang@163.com;邵新庆,E-mail:shaoxinqing@163.com
  • 作者简介:孙芸(1997-),女,汉族,贵州贵阳人,硕士研究生,主要从事反刍动物营养研究,E-mail:798785677@qq.com
  • 基金资助:
    黑龙江省“百千万”工程科技重大专项(No.2021ZX12B03);中国科学院战略性先导科技专项(XDA2604020-02);黑龙江省双一流特色学科平台项目(HLJ2022TSXK);国家自然科学基金项目(No.32171676)资助

Abstract: In this paper,the effects of straw-based pellet diets on digestion,intra-rumen fermentation and feed conversion ratio of small-tailed Han sheep were investigated for efficient use of straw. Four TMR pellet diets were formulated,which were composed partially of corn straw of 52% (Ⅰ),42% (Ⅱ),32% (Ⅲ) and 22%(Ⅳ),respectively. Digestion tests and weight gain tests were carried out. The results showed that:The apparent digestibility of DM in Group III was significantly higher than that in Groups I and IV (P<0.05);the apparent digestibility of CP in Group II was significantly higher than that in Groups I and IV (P<0.05);and the apparent digestibility of ADF and NDF in Groups I,II and III was significantly higher than that in Group IV (P<0.05). Deposited nitrogen,deposited nitrogen/intake nitrogen ration,deposited calcium and deposited phosphorus in group Ⅲ were significantly higher than those in the other three groups (P<0.05). The concentration of NH3-N in the rumen of group IV sheep was significantly higher (P<0.05) than the other experimental groups. The daily weight gain of groups III and IV was significantly higher (P<0.05) than that of group I. The daily weight gain of group III was significantly higher (P<0.05) than that of group II,and group III had the lowest feed meat. Thus,the findings suggest that the TMR with 32% corn straw can produce a good feeding effect.

Key words: Corn straw, Total mixed ration pellet, Digestive performance, Ruminal fermentation, Feed efficiency

摘要: 本研究为高效利用秸秆,探讨了秸秆型颗粒日粮对小尾寒羊的消化、瘤胃内发酵及饲料转化率的影响。配制4种TMR颗粒日粮,玉米秸秆分别为52%(Ⅰ组),42%(Ⅱ组),32%(Ⅲ组)和22%(Ⅳ组),开展了消化试验和增重试验。结果表明:Ⅲ组DM表观消化率显著高于Ⅰ,Ⅳ组(P<0.05);Ⅱ组CP表观消化率显著高于Ⅰ,Ⅳ组(P<0.05);Ⅰ,Ⅱ,Ⅲ组ADF、NDF表观消化率显著高于Ⅳ组(P<0.05)。Ⅲ组沉积氮、沉积氮/摄入氮、沉积钙、沉积磷显著高于其他三组(P<0.05)。Ⅳ组瘤胃内NH3-N浓度显著高于其他试验组(P<0.05)。Ⅲ,Ⅳ组的日增重显著高于Ⅰ组(P<0.05),且Ⅲ组日增重显著高于Ⅱ组(P<0.05),Ⅲ组的料肉最低。因此,玉米秸秆为32%的TMR颗粒饲喂效果最佳。

关键词: 玉米秸秆, TMR颗粒, 消化特性, 瘤胃发酵, 饲料转化率

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