花生秧粉碎对TMR物理特性和湖羊生产性能的影响  

Effects of crushing peanut straws on physical characteristics of TMR and production performance of Hu sheep

作　　者：张建童 欧阳克蕙[1] 蔡金秀 陈新锋 李开嵘 熊小文[1] 李艳娇[1] 邱清华 ZHANG Jiantong;OUYANG Kehui;CAI Jinxiu;CHEN Xinfeng;LI Kairong;XIONG Xiaowen;LI Yanjiao;QIU Qinghua(Animal Nutrition and Feed Safety Innovation Team,Jiangxi Agricultural University,Nanchang 330045,China;Nantang Agricultural Technology Extension Station,Ganxian Bureau of Agricultural and Rural Affairs,Ganzhou 341401,China;Ganzhou Lvlinwan Agriculture and Animal Husbandry Co.,Ltd.,Ganzhou 341401,China)

机构地区：[1]江西农业大学动物营养与饲料安全创新团队,南昌330045 [2]赣县农业农村局南塘农业技术推广站,江西赣州341401 [3]赣州绿林湾农牧有限公司,江西赣州341401

出　　处：《黑龙江畜牧兽医》2023年第3期87-91,共5页Heilongjiang Animal Science And veterinary Medicine

基　　金：江西牛羊产业技术体系项目(JXARS-13);财政部和农业农村部江西省教育厅科技计划项目(GJJ210405)。

摘　　要：为了探讨花生秧粉碎对全混合日粮(total mixed ration, TMR)物理特性及湖羊生产性能的影响,试验将健康、体重为(15.77±1.27)kg的48只断奶湖羊公羔随机分为对照组(饲喂未粉碎的花生秧)和试验组[饲喂经粉碎(筛孔直径8 mm)的花生秧],每组6个重复,每个重复4只。预试期为10 d,正试期为30 d。花生秧(粉碎、未粉碎)、精料补充料及试验组和对照组的TMR用几何法取样,每10 d取样1次,混匀后用四分法取样,使用宾州筛(PSPS)测定饲料的平均粒度、物理有效系数(pef)>8.00、pef>4.00、物理有效中性洗涤纤维(peNDF);收集各层饲料样品称重,测定样品容重;在试验开始前和结束后,对所有羊空腹称重,记录初重和末重,计算平均日增重、平均日采食量和料重比;统计日粮成本、盈利等经济效益情况。结果表明:花生秧粉碎后TMR的平均粒度、pef>8.00和peNDF>8.00显著降低(P<0.05),TMR的容重显著提高(P<0.05);花生秧粉碎后改变了TMR物料在宾州筛各层间的分布比例。试验组的总增重、平均日增重、平均采食量比对照组分别提高12.20%、12.14%、3.77%,料重比降低7.20%,但均差异不显著(P>0.05);与对照组相比,试验组日粮成本降低0.69元/kg,盈利增加19.34元/只。说明花生秧经粉碎(筛孔直径8 mm)后,TMR粒度下降,容重增加,peNDF>8.00降低,提高了湖羊公羔的体重和饲料利用率,可有效节约饲料成本。The objective of this experiment was to evaluate the effects of crushing peanut straws on physical characteristics of total mixed ration(TMR) and production performance of Hu Sheep. Forty-eight healthy weaned male Hu sheep lambs with the body weight of(15.77±1.27) kg were randomly divided into control group(fed uncrushing peanut straws) and experiment group(fed with crushing peanut straws [sieve diameter 8 mm]). Each group had six replicates and each replicate included 4 lambs. The pre-test period was ten days, and the test period was 30 days. Peanut seedling(crushing, uncrushing), concentrate supplement and TMR for experiment group and control group were sampled by geometric method, once every 10 days. After mixing, quartering method was used for sampling. The average particle size, physical effective coefficient(pef)>8.00, pef>4.00, and physical effective neutral detergent fiber(peNDF) of the feed were determined by Pennsylvania sieve(PSPS). The feed samples of each layer were weighed and used to measure the bulk density of the samples. Before and after the test, all sheep were weighed on an empty stomach, the initial and final weights were recorded. The average daily gain, average daily feed intake and feed to weight ratio were calculated. The economic benefits such as feed cost and profit were calculated. The results showed that the mean particle size, pef>8.00and peNDF>8.00of TMR decreased significantly after the crushing of peanut seedlings(P<0.05), and the bulk density of TMR increased significantly(P<0.05). The crushed peanut seedlings changed the distribution ratio of TMR material between layers of Pennsylvania sieve. Compared with the control group, the total weight gain, average daily weight gain and average food intake in the test group were increased by 12.20%, 12.14% and 3.77%, respectively, and the feed to weight ratio was decreased by 7.20%, but there was no significant difference(P>0.05). Compared with the control group, the cost of diet in the test group decreased by 0.69 yuan/kg, and the profi

关 键 词：湖羊 花生秧 粉碎粒度 TMR物理特性 生长性能 经济效益 

分 类 号：S816.5[农业科学—饲料科学]