摘要
本试验皆在研究稻草-木薯渣发酵裹包(RS-CRFW)替代青贮玉米对水牛生长性能、养分表观消化率和粪便微生物区系的影响。选取15~18月龄、平均体重为(319.32±24.28)kg的生长期母水牛30头,随机分为3组,每组10个重复,每个重复1头牛。A组饲喂常规粗饲料(青贮玉米、花生藤和白酒糟)的全混合日粮,B组和C组分别用RS-CRFW替代常规粗料中12.46%和24.91%的青贮玉米。预试期14 d,正试期60 d。结果表明:1)与A组相比,B组平均日增重(ADG)无显著差异(P>0.05),C组ADG显著降低(P<0.05),B组和C组干物质采食量显著降低(P<0.05)。2)与A组相比,B组中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和有机物(OM)表观消化率无显著差异(P>0.05),C组NDF、ADF和OM表观消化率显著降低(P<0.05)。3)与A组相比,B组粪便微生物Chao1指数和Observed species指数无显著差异(P>0.05),C组粪便微生物Chao1指数和Observed species指数显著降低(P<0.05)。与A组相比,B组粪便中拟杆菌属(Bacteroides)的相对丰度提高了36.59%(P>0.05)。综上所述,饲粮中用RS-CRFW替代12.46%的青贮玉米可改善肠道菌群结构,对水牛的NDF、ADF和OM表观消化率和ADG无负面影响。
This experiment aimed to investigate the effects of rice straw-cassava residue fermentation wrapping(RS-CRFW)replacing silage corn on growth performance,nutrient apparent digestibility and fecal microbiota of water buffaloes.Thirty 15 to 18-month-old growing female water buffaloes with an average body weight of(319.32±24.28)kg were randomly divided into 3 groups with 10 replicates per group and 1 water buffaloe per replicate.Group A was fed a total mixed ration consisting of conventional roughages(silage corn,peanut vines and distiller’s grains),while group B and group C were used RS-CRFW replacing 12.46%and 24.91%silage corn in the conventional roughages,respectively.The pre-trial period was 14 days,and the trial period was 60 days.The results showed as follows:1)compared with the group A,the average daily gain(ADG)of group B was no significant difference(P>0.05),the ADG of group C was significantly decreased(P<0.05),and the dry matter intake of group B and group C was significantly decreased(P<0.05).2)Compared with the group A,the apparent digestibility of neutral detergent fiber(NDF),acid detergent fiber(ADF)and organic matter(OM)of group B were no significant difference(P>0.05),and the apparent digestibility of NDF,ADF and OM of group C were significantly decreased(P<0.05).3)Compared with the group A,the fecal microbiota Chao1 index and Observed species index of group B were no significant difference(P>0.05),and the fecal microbiota Chao1 index and Observed species index of group C were significantly decreased(P<0.05).Compared with the group A,the relative abundance of Bacteroides in feces of group B was increased by 36.59%(P>0.05).In summary,the RS-CRFW replacing 12.46%silage corn in the diet can improve the gut microbiota structure,and has no negative effects on the ADG and apparent digestibility of NDF,ADF and OM of water buffaloes.
作者
魏才翔
黄晓华
梁煜阳
冯安东
顾啟超
姚毅沛
文崇利
邹彩霞
WEI Caixiang;HUANG Xiaohua;LIANG Yuyang;FENG Andong;GU Qichao;YAO Yipei;WEN Chongli;ZOU Caixia(College of Animal Science and Technology,Guangxi University,Nanning 530004,China;Science and Technology Backyard of Guangxi Fusui Dairy Industry,Chongzuo 532100,China;Guangxi Key Laboratory of Animal Breeding,Disease Control and Prevention,Nanning 530004,China;Guangxi Buffalo Research Institute,Nanning 530012,China)
出处
《动物营养学报》
北大核心
2025年第9期6047-6060,共14页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
十四五国家重点研发计划项目(2022YFD1300602)
广西科技重大专项(桂科AA22068099-5)。
关键词
木薯渣
稻草
替代
水牛
生长性能
微生物
消化率
cassava residue
rice straw
replace
water buffaloes
growth performance
microbiota
digestibility
