摘要
选择类似条件的长白、大约、长大杂、四元杂断奶仔猪各20头,均等分成两组,分别喂给按美国饲养标准和中国饲养标准配合的日粮,对试验结果进行了最小二乘分析,结果表明,品种组合及营养水平对日增重均有极显著影响,品种组合对后腿比例、瘦肉率、四腿瘦肉率、皮率有显著或极显著影响,对其它性状无显著影响;营养水平除对屠宰率有显著影响外,对其它胴体性状无显著影响,品种组合与营养水平间互作仅在胴体直长、眼肌面积、四腿瘦肉率等少数性状上存在显著影响,采用美国饲养标准饲喂瘦肉型外来品种及其杂种具有饲养成本低,周转快的优点。
Twenty weaned piglets were selected from Landrace (L), Large White(LW, L×LW and crosses of four breeds respectively, For each breed type, 20 piglets weredivided into two equal groups. One group was fed on NRC diet, and the other fed onChinese Feeding Standard diet. Least Square analysis indicated that both breed types and nu-trition levels had markedly effects on daily gain (p<0.01). The differences of percentage ofrear leg, lean, four legs' lean, skin between breed types were significant (p<0.05 orp<0.01). Nutrition levels had a significant influence on dressing percentage. The interactionbetween breed type and nutrition level was significant only in the percentage of carcasslength, eye-muscule area, four legs' lean. It was concluded that foreign lean breeds andtheir crosses fed on NRC diet had the advantages of lower feeding cost and faster circulation.
关键词
长白猪
肥育
营养成分
胴体性状
fattener pig
fattening
nutrition constituent
feeding standards
carcass quality
