合作猪不同饲养模式调查及对生产性能的影响研究

Investigation and Study on the Effects of Production Performance of Hezuo Pigs under Different Producing Modes

合作猪(藏系猪)俗称蕨麻猪、藏猪、山猪,是我国最宝贵的动物品种资源之一。经调查,在合作猪主产区合作猪饲养模式主要有4种:终年放牧模式、春夏舍饲秋冬放牧、春夏放牧秋冬舍饲模式和全舍饲养殖模式;试验选择生长发育、体重、营养状况基本一致的150头1月龄合作猪,分为6组,分别以方式(1)、(2)、(2-1)、(3)、(4)、(4-1)模式养殖,同时测定纯放牧模式、春夏舍饲秋冬放牧、春夏放牧秋冬舍饲模式下80头母猪的繁殖性能。试验结果表明,模式(4-1)和模式(2-1)增重效益显著高于其他模式(P<0.05),春夏放牧秋冬舍饲模式下合作的猪繁殖性能最佳,其次为春夏舍饲秋冬放牧模式,纯放牧模式下窝仔数、仔猪初生重、繁殖成活率均显著低于前两者(P<0.05)。

Hezuo pigs（Tibetan pig） commonly known as Jue Ma pig, Tibetan pig and Mountain pig,which is one of the most precious animal resources in our country. According to the investigation, there are four main feeding modes in the main producing area of the Hezuo pigs,whcich are the whole year grazing mode, grazing in the autumn and winter while feeding in the spring and summer mode, grazing in spring and summer the while feeding in the autumn and winter mode, and the whole year feeding mode. We selected 150 Hezuo pigs which were divided into six groups, to feed by mode（1）,（2）,（2-1）,（3）,（4）and（4-1） mode. At the same time, We investigate the reproductive performance of80 sows under the whole year grazing mode, grazing in the autumn and winter while feeding in the spring and summer mode, grazing in spring and summer the while feeding in the autumn and winter mode The results showed that the model（4-1） and model（2-1） of body weight gain was significantly higher than that of other models（p 0.05）.The mode grazing in the autumn and winter while feeding in the spring and summer had a best reproductive performance,followed by mode grazing in the autumn and winter while feeding in the spring and summer.The whole year grazing mode had a significantly lower litter size, piglet birth weight, reproductive survival rate than the former two（P〈0.05）.