CrPic对生长肥育猪肥育性能及胴体组成和肉质的影响

通过饲养、屠宰试验和胴体组成测定，探讨了羧酸吡啶铬对生长肥育猪肥育性能、胴体组成和肉质的影响。对杜长大杂种猪分别饲喂含0，200，400μg·kg-1羧酸吡啶铬的日粮，测定其结果表明：羧酸吡啶铬显著地降低了猪的采食量和料重比，并有提高日增重的趋势；它可以使猪的瘦肉率、眼肌面积、最长肌和半腱肌的重量明显提高，脂肪率和背膘厚显著下降。此外，羧酸吡啶铬可增加猪背最长肌中粗蛋白含量、粗脂肪含量、RNA含量及RNA/DNA比值。

Effects of CrPic onperformance and carcass characteristics in growing-finishing pigs

This study was conducted to investigate the effect of chromiumpicolinate on performance and carcass characteristics in growing-finishing pigs. 144 pigs were randomly allotted to three treatments. There were 48 pigs in each treatment with three replicate pens of 16 pigs. The pigs were fed the diets supplemented with 0, 200, 400 μg·kg-1 chromium picolinate respectively. The results showed that chromium picolinate significantly decreased feed intake, feed gain ratio, fat percentage and 10th rib backfat thickness, increased average daily gain, dissected lean percentage, longissimus dorsi area, weight of longissimus muscle and biceps femoris compared with the control group. Futhermore, chromium picolinate increased the contents of protein fat, and RNA, RNA/DNA ratio in longissimus dorsi.