摘要
为应用微生态制剂进行肉羊舍饲育肥提供理论支撑,本试验以萨福克公羊与小尾寒羊母羊杂交一代为试验对象,随机选取日龄(90±6日龄)、体重(31.8±2.8 kg)相近的120只个体,分3个试验组,每组40只,进行为期60 d的育肥试验,其中预饲期为7 d。对照组粗饲料为粉碎的干玉米秸秆和麦草;试验Ⅰ组饲喂鞣制粉碎的青贮玉米秸秆;试验Ⅱ组饲喂经过微生态制剂发酵处理鞣制粉碎的青贮玉米秸秆,微生态制剂的添加量为青贮料重量的0.5%。经过60 d的育肥试验,对照组体重增加10.8 kg/只,试验Ⅰ组增加14.9 kg/只,试验Ⅱ组羊只体重增加17.8 kg/只。其中,试验Ⅰ组的日增重显著高于对照组(P<0.05),试验Ⅱ组的日增重极显著高于和对照组试验Ⅰ组(P<0.01)。试验Ⅱ组的屠宰率和净肉率显著高试验Ⅰ组和对照组(P<0.05)。在育肥过程中,经过微生态制剂与青贮玉米秸秆发酵后的日粮,饲喂萨福克与小尾寒羊的杂交一代,可以提高育肥羊只对饲料的利用效率,同时可以改善育肥羊只的生产性能,在实际生产中具有较大的推广意义。
Providing theoretical evidence for the application of microecologics. The crossbreed of Suffolk sheep (male) and Small Tail Han sheep (female) at 90 ± 6 day old and with 31.8 ± 2.8 kg were included in the test. Totally 120 sheep were divided into 3 groups (non-fattened group, fattened group1 and group2) and fattened for 60 days including 7 days pre-fattening. The non-fattened sheep were fed with dry corn straw and wheat straw while the fattened group 1 and 2 were fed respectively with tanning crushed corn straw silage and corn straw silage fermented with 0.5% microecologics. compared to the non-fattened control (an average of 10.8 kg increase in weight), the fattened group 1 and group 2 showed a significant increase in their weight with an average of 14.9 kg (P< 0.05) and 17.8 kg (P< 0.01), respectively. the crossbreed of Suffolk sheep and Small Tail Han sheep showed relative high productivity as a result of feeding with microecologics. Moreover, the usage rate of fodder was also increased by microecologics suggesting that it can be worthy to applicate.
出处
《草食家畜》
2015年第4期30-34,共5页
Grass-Feeding Livestock
基金
新疆农业职业技术学院项目"微生态制剂在肉羊养殖中的应用示范"(XJNZYKJ2014017)
