摘要
文章旨在探究日粮非纤维性碳水化合物与中性洗涤纤维比例(NFC/NDF)对德州驴生产性能、营养物质表观消化率及血清生化指标的影响.试验选用 7 月龄健康状况良好、体重(116.24±9.5)kg的德州驴 30 头,随机分为 3组,每组 10 头,分别饲喂NFC/NDF为 0.38、0.55 和 0.91 的 3 种颗粒型全混合日粮(TMR).试验为期 45 d,其中预饲期15 d,正试期 30 d,每头驴每天饲喂 3.5 kg TMR颗粒饲料.结果表明,德州驴在采食 3 种NFC/NDF日粮时,0.91 组日增重、料重比和经济效益优于0.55组和0.38组(P＜0.05);德州驴在采食3种NFC/NDF日粮时,0.91组对消化能(DE)、干物质(DM)、有机物(OM)、粗蛋白质(CP)、无氮浸出物(NFE)、碳水化合物(CHO)和中性洗涤纤维(NDF)的表观消化率均显著高于0.55组和0.38组(P＜0.05);0.55组NFE、CHO、NDF和NFC的表观消化率显著高于0.38组(P＜0.05);德州驴在采食 3 种NFC/NDF日粮时,血清乳酸脱氢酶(LDH)和尿素氮(UIEA)含量随着日粮NFC水平升高而降低,葡萄糖(GLU)、总胆固醇(TCHO)和低密度脂蛋白(LDL)含量随NFC水平的升高而升高.由此可见,在本试验日粮NFC/NDF(0.38～0.91)范围内,饲喂高NFC/NDF(0.91)日粮能提高德州驴的平均日增重和经济效益,同时提高日粮营养物质的表观消化率.
Abstract
The experiment aims to explore the effects of the ratio of non fibrous carbohydrates to neutral detergent fiber(NFC/NDF)in feed on the production performance,apparent digestibility of nutrients,and serum biochemical indicators of Dezhou donkeys.Thirty Dezhou donkeys with good health status and a weight of(116.24±9.5)kg at 7 months old were randomly divided into three treatments,with 10 donkeys in each treatment.They were fed three types of granular total mixed diets(TMR)with NFC/NDF of 0.38,0.55and 0.91,respectively.The experimental period is a total of 45 days,with a pretrial period of 15 days and a main trial period of 30 days.Each donkey is fed 3.5 kg of TMR particles per day.The results showed that when feeding on three types of NFC/NDF diets,the daily weight gain,feed to weight gain ratio,and economic benefits of the 0.91 group were better than those of the 0.55 and 0.38 groups(P＜0.05);When Dezhou donkeys fed three types of NFC/NDF diets,the apparent digestibility of digestible energy(DE),dry matter(DM),organic matter(OM),crude protein(CP),nitrogen-free extract(NFE),carbohydrates(CHO),and neutral detergent fiber(NDF)in the 0.91 group were significantly higher than those in the 0.55 and 0.38 groups(P＜0.05);The apparent digestibility of NFE,CHO,NDF,and NFC in the 0.55 group was significantly higher than that in the 0.38 group(P＜0.05);When Dezhou donkeys were fed three types of NFC/NDF diets,the levels of serum lactate dehydrogenase(LDH)and urea nitrogen(UIEA)decreased with increasing dietary NFC levels,while the levels of glucose(GLU),total cholesterol(TCHO),and low-density lipoprotein(LDL)increased with increasing NFC levels.From this,it can be seen that within the range of NFC/NDF(0.38～0.91)in the experimental feed,feeding high NFC/NDF(0.91)feed can effectively improve the average daily weight gain and economic benefits of Dezhou donkeys,while also improving the apparent digestibility of nutrients in the feed.
基金项目
山东省现代农业产业技术体系建设项目(SDAIT-27-03)
山东省现代农业产业技术体系建设项目(SDAIT-23-05)
&&(S190503110001-1cy)
国家科技期刊平台
NSTL
万方数据