不同杂交组合育肥羔羊生长、屠宰性能和肉品质的研究

 通过饲养试验对3个不同杂交组合育肥羔羊生产性能、屠宰性能和肉品质进行了研究，为选育优质肉羊品种提供理论基础。选取杜寒14只，南本18只，寒本12只为研究对象，相同条件下，饲养到9月龄，选取部分试羊进行屠宰，比较其屠宰性能和肉品质。结果表明：杜寒F1羔羊全期平均日增重达252.81g，极显著高于寒本（P＜0.01），显著高于南本（P＜0.05），南本显著高于寒本（P＜0.05）；杜寒的屠宰率和净肉率极显著高于寒本（P＜0.01），显著高于南本（P＜0.05），南本与寒本差异不显著（P>0.05）；南本的大理石纹极显著高于杜寒与寒本（P＜0.01）。南本的熟肉率显著高于寒本（P﹤0.05）。杜寒杂交组合生产性能和屠宰性能优势明显。

Effects of Different Hybridized Combination Fattening Lambs on Growth and Slaughter Performance and Meat Quality Traits

To provide theoretical foundation for the breeding of excellent meat sheep variety growth and slaughter performance and meat quality traits of three different hybridized combination fattening lambs were investigated . The F1 generations of DH (n=14), NB (n=18) and HB sheep (n=12) were selected as experiment animals. After they were fed under the same raising condition for nine months, part of them were slaughtered to compare slaughter performance and meat quality. The results showed as follows: 1) The average daily gain (ADG) of DH F1 was 252.81g/d, which is greatly significantly higher than that of HB F1（P＜0.01）and significantly higher than that of NB F1（P＜0.05）, ADG of NB F1 was significant higher than that of HB F1（P＜0.05）; 2) Dressing percentage and net meat percentage between DH F1 and HB F1 was greatly significant difference（P＜0.01）, that of between NB F1 and HB F1 was significant difference（P＜0.05）, but NB F1 and HB F1 had no difference（P>0.05）; 3）Marbling score of NB F1 sheep was greatly significantly higher than that of DH F1 and HB F1（P＜0.01）. Cooking meat percentage of NB F1 sheep was significantly higher than that of HB F1（P＜0.05）. Hybrid combination of Dorper sheep × Small tail Han sheep in growth and slaughter performance was obvious.