发酵全混合日粮的发酵品质及其对鲁西黑头羊生长性能和抗氧化指标的影响  

Fermentation quality of fermented total mixed ration and its effects on growth performance and antioxidant indicators of Luxi Black-headed mutton sheep

作　　者：刘霞[1] 李海滨 李尊严 王海丽[2] 李大璐 朱风华[1] 林英庭[1] 郭艺璇 LIU Xia;LI Hai-bin;LI Zun-yan;WANG Hai-li;LI Da-lu;ZHU Feng-hua;LIN Ying-ting;GUO Yi-xuan

机构地区：[1]青岛农业大学动物科技学院,山东青岛266109 [2]聊城职业技术学院,山东聊城252000

出　　处：《饲料研究》2024年第13期1-6,共6页Feed Research

基　　金：山东省现代农业产业技术体系羊产业技术体系(项目编号:SDAIT-10);青岛农业大学高层次人才科研基金资助项目(项目编号:663/1120009);山东省替抗饲用添加剂组合和无抗饲料产品创制(项目编号:2019JZZY020609-02)。

摘　　要：试验旨在探究发酵全混合日粮(FTMR)的发酵品质及其对鲁西黑头羊生长性能和抗氧化指标的影响。试验以花生秧为粗饲料,与精料按照4∶6混合,发酵30 d制备FTMR,测定其营养成分和发酵品质。选用健康、体重(20.76±1.56)kg的鲁西黑头羊32只,随机分为2组,每组4个重复,每个重复4只羊。对照组饲喂全混合日粮(TMR),试验组饲喂FTMR。预试期15 d,正式试验期63 d,测定其生长性能、养分表观消化率和血清抗氧化指标。结果表明:随着发酵时间延长,FTMR中水分和粗蛋白含量均呈先增加后逐步稳定的趋势,粗灰分含量呈先降低后逐步稳定的趋势;pH值呈先降低后趋于稳定的趋势,乙酸(AA)和丙酸(PA)含量呈先增加后稳定的趋势,氨态氮(NH3-N)含量显著增加(P<0.05)。整个发酵过程中未检出丁酸(BA),玉米赤霉烯酮(ZEN)、黄曲霉毒素B1(AFB1)和呕吐毒素(DON)含量均低于国家标准。与对照组相比,试验组鲁西黑头羊平均日干物质采食量显著降低(P<0.05);试验组鲁西黑头羊对粗蛋白、中性洗涤纤维、酸性洗涤纤维的表观消化率显著提高(P<0.05),干物质的表观消化率显著降低(P<0.05);试验组鲁西黑头羊血清丙二醛(MDA)含量显著降低(P<0.05),总抗氧化能力(T-AOC)显著升高(P<0.05)。研究表明,FTMR发酵品质优良,与TMR相比,饲喂FTMR能够提高鲁西黑头羊生长性能和抗氧化能力。The experiment aimed to investigate the fermentation quality of fermented total mixed ration(FTMR)and its effects on the growth performance and antioxidant indicators of Luxi Black-headed mutton sheep.The experiment used peanut straw as roughage,mixed with compound concentrate at a ratio of 4∶6,and fermented for 30 days to prepare FTMR,and its nutritional components and fermentation quality were measured.A total of 32 healthy Luxi Black-headed mutton sheep with body weight(20.76±1.56)kg were randomly divided into two groups,each group with four replicates,and each replicate consisted of four sheep.The control group was fed with total mixed ration(TMR),while the experimental group was fed with FTMR.The preliminary trial lasted for 15 days,and the formal experiment lasted for 63 days.The growth performance,apparent nutrient digestibility,and serum antioxidant indicators were measured.The results showed that with the extension of fermentation time,the moisture and crude protein content in FTMR both showed a trend of increasing first and then gradually stabilizing,while the crude ash content showed a trend of decreasing first and then gradually stabilizing.The pH value showed a trend of decreasing first and then stabilizing,acetic acid(AA)and propionic acid(PA)content showed a trend of increasing first and then stabilizing,and the ammonia nitrogen(NH3-N)content significantly increased(P<0.05).Throughout the fermentation process,no butyric acid(BA)was detected,and the contentrations of zearalenone(ZEN),aflatoxin B1(AFB1),and deoxynivalenol(DON)were all below the national standards.Compared with the control group,the dry matter intake of Luxi Blackheaded sheep in the experimental group was significantly reduced(P<0.05),the apparent digestibility of crude protein,neutral detergent fiber,and acid detergent fiber in Luxi Black-headed mutton sheep in the experimental group was significantly improved(P<0.05),while the apparent digestibility of dry matter was significantly reduced(P<0.05),the content of malondialdehyde(MD

关 键 词：鲁西黑头羊 发酵全混合日粮 发酵品质 生长性能 抗氧化能力 

分 类 号：S826[农业科学—畜牧学]