【摘要】 根据羔羊生长发育规律和代谢特点 ,提出了百日龄羔羊生产技术 ,对 2 1 0只东北细毛羊和 30只寒杂(东北细毛羊×小尾寒羊 )羔羊 ,采取 45日龄断奶 ,全舍饲强度育肥 5 5d ,1 0 0日龄屠宰 ;对 2 0只 4月龄断奶的东北细毛羔羊 ,采取放牧加补饲法育肥 ,1 0月龄屠宰。比较了上述 3组的育肥性能、屠宰成绩、肉质分析及经济效益。结果表明 :百日龄羔羊的育肥性能、屠宰成绩、肉质分析及经济效益均好于放牧加补饲育肥的 1 0月龄羔羊 ,而寒杂羔羊又优于东北细毛羔羊更多还原

【Abstract】 A group,210 lambs of northeart finwool sheep (NFS)and 30 han hybrid(NFS×Small tail han sheep) lambs (B group) were weaned at 45 day old,fatten in barn feeding of 55 days ,dressed at 100 day old according to new theory of rumen animal nutrition.C group (control group),20 NFS sheep were weaned at 4 month old,fatten with grazing and complemental feed,dressed at 10 month old.The performent fatten, meat quality analysed and economic benefit of 3 groups were compared.Results showed that the performance fatten, meat quality analysed and economic of A and B group are better than C group,and B group are better than A group.更多还原