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。
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 groupⅢwere significantly higher than those in the other three groups(P<0.05).The concentration of NH 3-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.
作者
孙芸
蒋再慧
谢华德
孔德慧
金鹏
邵新庆
曹阳
SUN Yun;JIANG Zai-hui;XIE Hua-de;KONG Dei-hui;JIN peng;SHAO Xin-qing;CAO Yang(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;Engineering Research Center of Processing and Utilization of Grain By-products,Ministry of Education,Daqing,Heilongjiang Province 163319 China;TANGRENSHEN GROUP CO.,LTD,Zhuzhou,Hunan Province 412000,China;Guangxi Zhuang Autonomous Region Buffalo Research Institute,Nanning,Guangxi Province 530001,China;Qiqihar Pengbo Feed Technology Co.LT,Qiqihaer,Heilongjiang Province 161032,China;College of Grassland Science and Technology,China Agricultural University,Beijing 100193,China;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)
出处
《草地学报》
CAS
CSCD
北大核心
2023年第10期3194-3202,共9页
Acta Agrestia Sinica
基金
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。
关键词
玉米秸秆
TMR颗粒
消化特性
瘤胃发酵
饲料转化率
Corn straw
Total mixed ration pellet
Digestive performance
Ruminal fermentation
Feed efficiency
