在生长獭兔日粮中添加尿素的试验研究

选用生长獭兔２７只，随机分为３组，分别饲喂加入０％、１．０％和２．０％尿素的日粮，研究对试兔增重、饲料转化率、屠宰率及肉和毛皮品质的影响。试验结果表明：１０％、２０％尿素组的试兔增重分别比对照组提高２．８３～９．２１％，随尿素添加量的增加，每天每只兔的采食量稍增加，蛋白效率比以１．０％尿素组最好。日粮中添加１．０％、２．０％的尿素对生长獭兔的屠宰率、肉及毛皮质量均无不良影响，１．０％尿素组的单位增重成本比对照组降低１．１９％。因此，生长獭兔日粮中添加１．０％尿素是可行的

Studies on urea supplementation to the diets of growing Rex rabbits

The effects of incorporating urea in the diets at different levels on the body weight gain,the feed conversion efficiency, the slaughting performance, the meat qualities and the fur qualities were studied with 27 Rex rabbits. The results indicated that: The body weight gain of 1%,2% urea group increased 2.83% and 9.21% as compared to the control group. The addition of urea increased from 0% to 2%, the feed consumption had increasing tendency, the feed and protein availability had decreasing tendency, but the difference was not significant(P>0.05). Incorporating urea had no adverse effect on the carcass yield and the meat qualities (P>0.05),some characteristics were better than the control group. Except that the weight of the lung was higher than the control group(P<0.05),the addition of urea had no significantly adverse effect on the weight of other organs and the fur qualities(P>0.05). The feed price of 1% and 2% urea group reduced by 4.93% and 9.15%,but the feeding cost of 1%urea group only reduced 1.19%,2% urea group increased 5.64% on the contrary as compared to the control group.