湖北白猪优质配套系商品猪性能测定报告

孙华　宋忠旭　彭先文　董斌科　雷彬　李明波　梅书棋

摘要：以含有地方猪血液40%以上的湖北白猪优质系（HBYL）为配套系第一母本，巴克夏（HBYZ1）和大白猪SII1系（HBYZ2）分别为终端父本和中间父本，进行了湖北白猪优质配套系商品猪的生产和性能测定。结果表明，湖北白猪优质配套系商品猪肥育期日增重和达到100 kg体重日龄分别为765.29 g/d和175.34 d，胴体瘦肉率为62.20%，眼肌面积为43.59 cm2，肌内脂肪含量为2.52%，父母代（HBYZ2系♂×HBYL系♀）母猪窝产仔数和窝活仔数分别为13.86和13.08头，多数肥育和胴体性状变异系数均低于10%，（HBYZ2系♂×HBYL系♀）母猪窝产仔数和窝活仔数变异系数均低于20%，具有较好的遗传稳定性。

关键词：湖北白猪优质配套系；性能测定；变异系数

中图分类号：S828；S813.2 文献标识码：A 文章编号：0439-8114（2015）24-6307-02

DOI：10.14088/j.cnki.issn0439-8114.2015.24.054

Abstract： In this study the high quality line of Hubei white pig which had 40% blood from Chinese native breeds was adopted as first female patent， the Barkshire pig and Yorkshire SII line as terminal male patent and middle male patent for the breeding of high quality synthetic line. The traits test results showed that the high quality synthetic line had high prolificacy and good growth， carcass and meat quality performance. The average daily gain in fattening， age at 100 kg weight， lean meat rate， eye loin area and intra-muscle fat of the commercial pig was 765.29 g/d，175.34 d，62.20%，43.59 cm2 and 2.52%，respectively. The total number of born （TNB） and alive number of born （ANB） in patent generation was 13.86 and 13.08， respectively. The variation coefficients of most growth and carcass traits were lower than 10%， and the variation coefficients of TNB and ANB in patent generation were both lower than 20% which showed good heritable stability.

Key words： High quality synthetic line of Hubei white pig； trait test； variation coefficient

配套系作为高效的商品肉猪生产方式，在近半个世纪的发展后，已经成为当前发达国家生猪产业主流生产模式。随着人们生活水平的不断提高，高效、优质、安全成为当前猪肉生产的主题，肉质鲜嫩、风味醇厚的优质肉成为新的市场需求发展方向。猪育种的新特点将是在开展遗传资源评价的基础上，利用国内国外两类基因资源，将分子育种与常规育种相结全，建立新的育种技术体系，培育出新型优质高产新品种（系）和适应不同市场需求的专门化品系并配套利用[1]。

湖北白猪优质系即为顺应市场与消费需求的方向，利用湖北白猪、通城猪、梅山猪、引进品种长白猪等中外两类不同基因资源，运用现代分子生物学方法，分离、筛选猪肉质性状、繁殖性状相关新基因和DNA分子标记选育而成的优质猪新品系[2]。……