杂交构树青贮对奶公牛生长性能、营养物质表观消化率和瘤胃发酵参数的影响  

Effects of Hybrid Broussonetia papyrifera Silage on Growth Performance,Nutrient Apparent Digestibility and Rumen Fermentation Parameters of Fattening Dairy Bulls

作　　者：宫斌 檀论 侯坤 范彩云[1] 王典 兰儒冰 陆兴伟 卓钊 王菊花[1] 程建波[1] GONG Bin;TAN Lun;HOU Kun;FAN Caiyun;WANG Dian;LAN Rubing;LU Xingwei;ZHUO Zhao;WANG Juhua;CHENG Jianbo(College of Animal Science and Technology,Anhui Agricultural University,Hefei 230036,China;China Youran Dairy Group Limited,Hohhot 010010,China;Anhui Hua Hao Ecological Breeding Co.,Ltd.,Liuan 237010,China)

机构地区：[1]安徽农业大学动物科技学院,合肥230036 [2]内蒙古优然牧业有限责任公司,呼和浩特010010 [3]安徽华好生态养殖有限公司,六安237010

出　　处：《动物营养学报》2023年第6期3771-3779,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：安徽省重点研发计划项目(202004a06020012);贵州省科技计划项目(黔科合支撑[2019]2281号);安徽省高校自然科学基金(KJ2021A0153)。

摘　　要：本试验旨在研究杂交构树青贮对奶公牛生长性能、营养物质表观消化率和瘤胃发酵参数的影响。选取12月龄左右、体重(330±35)kg的奶公牛30头,随机分成3组,每组10头牛。对照组饲喂基础饲粮,试验1、2组饲分别喂用杂交构树青贮替代基础饲粮中50%和100%苜蓿干草的试验饲粮。预试期14 d,正试期35 d。结果表明:各组之间奶公牛的生长性能、营养物质表观消化率和瘤胃发酵参数均无显著差异(P>0.05)。然而,对照组日饲料成本显著高于试验1、2组(P<0.05),试验2组日利润显著高于对照组(P<0.05)。由此可见,杂交构树青贮替代苜蓿干草不影响奶公牛生长性能、营养物质表观消化率和瘤胃发酵功能,并可降低饲料成本。The aim of this study was to investigate the effects of hybrid Broussonetia papyrifera silage on growth performance,nutrient apparent digestibility and rumen fermentation parameters of fattening dairy bulls.Thirty dairy bulls aged about 12 months with body weight of(330±35)kg were randomly divided into 3 groups with 10 bulls per group.Dairy bulls in the control group were fed a basal diet,and the others in experi⁃mental groups 1 and 2 were fed experimental diets which used 50%and 100%hybrid Broussonetia papyrifera silage replacing the alfalfa hay in basal diets,respectively.The pre⁃experimental period lasted for 14 days and the experimental period lasted for 30 days.The results showed that there were no significant differences in growth performance,nutrient apparent digestibility and rumen fermentation parameters of fattening dairy bulls among all groups(P>0.05).However,the daily feed cost of the control group was significantly higher than that of experimental groups 1 and 2(P<0.05),and the daily profit of experimental group 2 was significantly higher than that of the control group(P<0.05).In conclusion,the replacement of alfalfa hay with hybrid Broussonetia papyrifera silage has no effects on growth performance,nutrient apparent digestibility and rumen fermentation function of dairy bulls,and can reduce the feed cost.

关 键 词：杂交构树青贮 奶公牛 生长性能 瘤胃发酵 表观消化率 

分 类 号：S823[农业科学—畜牧学]