To understand the fattening performance of Duroc x Landrace×Yorkshire and Duroc×Yorkshire x landrace, 48 individuals of two kinds of three-way crossbreeding lean type commercial pigs were selected to determi...To understand the fattening performance of Duroc x Landrace×Yorkshire and Duroc×Yorkshire x landrace, 48 individuals of two kinds of three-way crossbreeding lean type commercial pigs were selected to determine average daily feed intake, average daily gain and feed gain ratio. The backtat thickness and eye muscle area of pigs were measured at the end of trial. The results showed that Duroc × Landraee × Yorkshire and Dttroc × Yorkshire x Landrace had similar fattening performance, and could be applied under scientific management conditions. The study is of great significance for development of pig industry.展开更多
本试验通过PCR-RFLP技术对大白猪、长白猪和杜洛克猪的视黄醇结合蛋白4(retinol binding protein 4,RBP4)基因第4外显子MspⅠ酶切位点进行多态性分析,并对各基因型母猪的第2、3胎次产仔数、产活仔数、断奶仔猪数、初生窝重、21日龄的窝...本试验通过PCR-RFLP技术对大白猪、长白猪和杜洛克猪的视黄醇结合蛋白4(retinol binding protein 4,RBP4)基因第4外显子MspⅠ酶切位点进行多态性分析,并对各基因型母猪的第2、3胎次产仔数、产活仔数、断奶仔猪数、初生窝重、21日龄的窝重及断奶成活率进行测定,进而分析RBP4基因多态性与繁殖性能的关系。结果表明,RBP4基因在3个品种中均存在多态位点;χ2适合性检验表明大白猪在该位点偏离Hardy-Weinberg平衡状态(P<0.05),而长白猪和杜洛克猪在该位点处于Hardy-Weinberg平衡状态(P>0.05)。其中,大白猪中优势基因型为BB基因型,而长白猪和杜洛克猪中优势基因型为AA基因型。在繁殖性能上,长白猪BB基因型群体第2胎总产仔数、产活仔数、断奶仔猪数、初生窝重、21日龄断奶窝重分别高于AA基因型0.97头、1.28头、0.92头、1.74kg和4.42kg,高于AB基因型0.92头、1.02头、0.98头、1.43kg和4.98kg;第3胎次中总体上BB基因型也为有利基因型。展开更多
文摘To understand the fattening performance of Duroc x Landrace×Yorkshire and Duroc×Yorkshire x landrace, 48 individuals of two kinds of three-way crossbreeding lean type commercial pigs were selected to determine average daily feed intake, average daily gain and feed gain ratio. The backtat thickness and eye muscle area of pigs were measured at the end of trial. The results showed that Duroc × Landraee × Yorkshire and Dttroc × Yorkshire x Landrace had similar fattening performance, and could be applied under scientific management conditions. The study is of great significance for development of pig industry.
文摘本试验通过PCR-RFLP技术对大白猪、长白猪和杜洛克猪的视黄醇结合蛋白4(retinol binding protein 4,RBP4)基因第4外显子MspⅠ酶切位点进行多态性分析,并对各基因型母猪的第2、3胎次产仔数、产活仔数、断奶仔猪数、初生窝重、21日龄的窝重及断奶成活率进行测定,进而分析RBP4基因多态性与繁殖性能的关系。结果表明,RBP4基因在3个品种中均存在多态位点;χ2适合性检验表明大白猪在该位点偏离Hardy-Weinberg平衡状态(P<0.05),而长白猪和杜洛克猪在该位点处于Hardy-Weinberg平衡状态(P>0.05)。其中,大白猪中优势基因型为BB基因型,而长白猪和杜洛克猪中优势基因型为AA基因型。在繁殖性能上,长白猪BB基因型群体第2胎总产仔数、产活仔数、断奶仔猪数、初生窝重、21日龄断奶窝重分别高于AA基因型0.97头、1.28头、0.92头、1.74kg和4.42kg,高于AB基因型0.92头、1.02头、0.98头、1.43kg和4.98kg;第3胎次中总体上BB基因型也为有利基因型。