瘦肉型母系猪苏钟系繁殖性能的观测

Observation on the Reproductive Performance of Lean type Maternal Pig Suzhong Line Ⅰ

对瘦肉型猪“苏钟 系”繁殖性能进行观测。结果表明 ,总产仔数 :初产猪 11.3 0± 2 .0 5头、二胎猪11.93± 2 .52头 ;妊娠期 :初产猪 113 .4 1± 1.55d、二胎猪 112 .3 8± 2 .16d;发情周期 :初产猪 19.70± 1.59d,经产猪 2 0 .58± 1.16d;乳头数 :种公猪 14 .90± 1.14枚、种母猪 14 .14± 1.0 9枚、仔猪 14 .97± 1.72枚。苏钟 系具有较好的繁殖性能 ,是生产商品杂优猪的理想瘦肉型母系猪。

Reproductive performance of pig “Suzhong line Ⅰ”were observed in this study.The results showed that:total litter size of the first farrowing sow and the second farrowing sow were 11 30±2 05 and 11 93±2 52,respectively;the first and the second gestation period were 113 41±1 55 d and 112 38±2 16 d,respectively;the first and the second oestrous cycle were 19 70±1 59 d and 20 58±1 16 d,respectively;the average nipple number were 14 90±1 14 in boars,14 14±1 09 in sows and 14 97±1 72 in offsprings.Therefore,Suzhong line Ⅰ is considered as the favourable lean type maternal pig for its good reproductive performance.