【摘要】 试验观察研究了大河乌猪纯繁(DW)、长白与大河乌猪杂交母猪(LDW),长白与大约克杂交母猪(LY)3个品种(组合)的繁殖性能。结果显示,大河乌猪(DW)母猪分娩率90.63%,分别比长大乌(LDW)和长大(LY)高1.16个百分点(P>0.05)和5.12个百分点(P<0.01);DW母猪窝均产仔数11.05头,与LDW和LY相比,差异不显著(P>0.05);DW母猪仔猪28日龄断奶窝重64.79 kg,分别比LDW和LY低11.51 kg(P<0.01)和16.15 kg(P<0.01);DW初生仔猪头均落地成本73.92元,仔猪断奶头均成本为158.77元,70日龄出栏头均成本322.26元,均较Y×LDW和D×LY低;保育仔猪出栏每千克成本以Y×LDW为最低,为13.69元。更多还原

【Abstract】 The reproductive performance of Da He black sow(DW),Landrace and the Da He black crossbred sow(LDW),Landrace and Yorkshire crossbred sow(LY) were studied.The results showed that the delivery rate of the Da He black sow(DW) was 90.63%.The delivery rate were 1.16 percentage point higher(P>0.05) and 5.12 percentage point(P<0.01) higher than that of LDW and LY respectively.The Da He black(DW) sow produced11.05 piglets per birth,compared with LDW and LY,the difference was not significant(P >0.05).The piglets weaned at 28 days old,the weight of a litter of DW sow was 64.79 kg,compared with LDW and LY,the ratio of LDW and LY was lower 11.51 kg(P<0.01) and 16.15 kg(P<0.01).The cost of producing a newborn piglet in DW sow is 73.92 yuan,the cost of producing a weaning piglets was 158.77 yuan,and the cost of producing a 70-day-old piglet was 322.26 yuan,which was lower than that of Y×LDW and D×LY,but the cost of the 70-dayold piglets was the lowest in the Y×LDW,and the cost is 13.69 yuan.更多还原