发酵全混合日粮对肉羊消化吸收功能和生长性能的影响研究
投稿时间:2020-05-26    点此下载全文
引用本文:王文飞,段娜,姜灵伟,陈锐,赵焕军,刘娟,葛胜修,林聪.发酵全混合日粮对肉羊消化吸收功能和生长性能的影响研究[J].中国农业大学学报,2020,25(12):40-48
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作者单位E-mail
王文飞 中国农业大学 水利与土木工程学院/农业农村部设施农业工程重点实验室, 北京 100083 wwfcau@163.com 
段娜 中国农业大学 水利与土木工程学院/农业农村部设施农业工程重点实验室, 北京 100083 duanna@cau.edu.cn 
姜灵伟 中国农业大学 水利与土木工程学院/农业农村部设施农业工程重点实验室, 北京 100083  
陈锐 中国农业大学 水利与土木工程学院/农业农村部设施农业工程重点实验室, 北京 100083  
赵焕军 内蒙古五原县巴美养殖开发有限责任公司, 内蒙古 巴彦淖尔 015100  
刘娟 内蒙古五原县巴美养殖开发有限责任公司, 内蒙古 巴彦淖尔 015100  
葛胜修 克明面业股份有限公司, 长沙 410004  
林聪 中国农业大学 水利与土木工程学院/农业农村部设施农业工程重点实验室, 北京 100083  
基金项目:国家重点研发计划(2018YFD0800803)
中文摘要:旨在探讨添加混合微生物菌剂的发酵全混合日粮(Fermented total mixed ration,FTMR)对肉羊营养物质消化吸收功能和生长性能的影响。通过发酵和肉羊饲喂试验,测定了FTMR的品质变化、营养物质表观消化率、肉羊瘤胃发酵情况及日增重。结果表明:1)全混合日粮发酵后pH和中性洗涤纤维含量显著降低,乳酸和乙酸含量显著增加(P<0.05);2)试验组肉羊瘤胃液pH显著降低,氨态氮含量降低50%以上(P<0.05);粗蛋白质、粗脂肪、中性洗涤纤维、酸性洗涤纤维和酸性洗涤木质素(ADL)的利用率均显著高于对照组(P<0.05),尤其是ADL利用率提高了29.92%(P<0.05)。3)试验组平均日增重较对照组提高50%。综上,混合微生物菌剂加入全混合日粮发酵后,适口性增强,可改善肉羊瘤胃液环境,提高肉羊的消化吸收功能和生长性能,有利于提高秸秆饲料化利用效率。
中文关键词:肉羊  混合微生物菌剂  发酵全混合日粮  消化率  生长性能
 
Effect of fermented total mixed ration on digestion-absorption function and growth performance of mutton sheep
Abstract:The objective of this study was to investigate the effect of fermented total mixed ration(FTMR)on the nutrients digestion and growth performance of mutton sheep. The fermentation and feeding tests were conducted in order to determine the nutrient quality of FTMR, as well as the changes of apparent digestibility, rumen fluid characteries and daily weight gain of mutton sheep. The results indicated that after total mixed ration(TMR)was fermented, the pH and neutral detergent fiber(NDF)content was decreased significantly(P<0. 05), and the content of lactic acid and acetic acid was increased significantly(P<0. 05). The pH of rumen fluid was significantly reduced(P<0. 05)and the ammonia nitrogen content of that was decreased more than 50% in comparison with that of the control group(P<0. 05). The utilization rate of crude protein, ether extract, neutral detergent fiber, acid detergent fiber and acid detergent lignin(ADL)in tested group was significantly higher than that in the control group(P<0. 05). In particular, the ADL utilization rate of tested group was about 29. 92% higher than that of control group(P<0. 05). In addition, the average daily weight gain of tested group was 50% higher than that of the control group. In summary, the rumen environment, digestion-absorption function and growth performance of mutton sheep, as well as the straw feed efficiency can be improved by fermentation TMR.
keywords:mutton sheep  mixed microbial inoculants  fermented total mixed ration  digestibility  growth performance
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