【摘要】 本试验以杜长约外三元杂交杜长荣两外一内三元杂交模式进行对比试验。试验结果表明 ,在生长发育 ,饲料报酬 ,瘦肉率和经济效益方面 ,外三元比两外一内三元杂交分别高 6.5 4 % ( P>0 .0 5 )、7.5 6% ( P>0 .0 5 )、8.92 % ( P<0 .0 5 )和 1 1 .30 % ( P>0 .0 5 )。更多还原

【Abstract】 This experiment based on the control experiment of three-way cross between Duroc,Landrace,Yorkshire and Duroc,Landrace,Rongchang.The results say thatthe former three-way cross is 6.45%( P >0.05),7.56%( P >0.05),8.92%( P >0.05)and 11.30%( P >0.05)higher than the later in growth,feed reward,lean meat percentage and economic benefits respectively.更多还原