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作 者:张达军[1] 陈斌[2] 柳小春[2] 张锦余[1] 孙杰龙[1] 施启顺[2]
机构地区:[1]益阳市农业科学研究所,湖南益阳413046 [2]湖南农业大学动物科学技术学院,湖南长沙410128
出 处:《湖南农业大学学报(自然科学版)》2008年第3期327-332,354,共7页Journal of Hunan Agricultural University(Natural Sciences)
基 金:湖南省科学技术厅重点攻关项目(02NKY2003)
摘 要:1999―2006年,采用开放核心群育种体系,数量遗传与分子育种技术相结合,培育出各具特色的3个湘益猪专门化品系:父Ⅱ系(终端公猪)以杜洛克为试材选育而成,具有前后躯肌肉发达、双肌背、体型高长、四肢粗壮、瘦肉率高、肉质好、饲料报酬高等特点;父Ⅰ系以长白猪为试材选育而成,具有体长,前后匀称,四肢结实、生长快、瘦肉率高、繁殖性能高等特点;母系以大白猪为试材选育而成,具有体躯较高长、四肢结实、适应性强、产仔性好等特点.以三系配套生产的湘益猪配套系杂优商品猪生长快、瘦肉率高、肉质好、体型好、肌肉发达,平均日增重907 g,料肉比2.6,胴体瘦肉率66.7%.The breeding of three-kinds of specilized lines of Xiangyi swine synthetic lines was formed by the combination of the quantity inheritance and molecular genetics through open-core population breeding system.The Ⅱ sire line(terminal sire)was bred on the basis of Duroc and it had traits of well-developed body muscles, double-muscle dorsum, long and high body, brawny limbs, high lean percentage, high meat quality, high fodder contribution.The Ⅰ sire line was bred on the basis of Landrace and had traits of long body, symmetry figure, strong limbs, fast growth, high lean percentage and so on.The dam line was bred on the basis of Yorkshire and had traits of long and high body, strong limbs, better adaptability, better farrowing performance and so on.The commodity pigs produced by XY pig synthetic line had traits of fast growth, high lean percentage, high meat quality, symmetry figure, well-developed muscles, its average daily liveweight gain was 907 g, and its lean percentage of carcrass was 66.7%.
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