日粮添加马铃薯粉对育肥猪生长性能、胴体性状和肉品质的影响

本研究旨在评估非常规饲料资源马铃薯粉在育肥猪上的应用,研究其对猪生长性能、胴体性状和肉品质的影响.试验将450头体重一致的育肥猪随机分为3组,每组5个重复,每个重复30只.对照组饲喂基础日粮,两个处理组分别饲喂马铃薯粉添加水平为10％和20％的日粮,试验为期56?d.结果:与对照组相比,10％马铃薯粉组29～56?d及...

Effects of dietary supplementation of potato powder on growth performance,carcass characteristics and meat quality of finishing pigs

The purpose of this study was to evaluate the application of unconventional feed resource potato powder in finishing pigs and to investigate its effects on growth performance,carcass traits and meat quality of pigs.450 fattening pigs of uniform weight were randomly divided into 3 groups with 5 replicates in each group and 30 pigs in each replicate.The control group was fed a basic diet,and the two treatment groups were fed a diet with 10%and 20%potato powder respectively for a period of 56 days.Results:Compared with the control group,the average daily feed intake of pigs in 10%potato powder group on 29~56 d and 1~56 d was significantly increased by 3.52%and 1.42%respectively(P<0.05),but the fattening pigs in this group showed the highest fattening ratio on 29~56 d and 1~56 d(P<0.05).The slaughter rate and relative weight of psoas muscle of the fattening pigs in the control group and the 10%potato group were significantly increased by 4.10%,3.73%,4.71%and 3.97%,respectively,compared with the 20%potato powder group(P<0.05).However,the gastrointestinal weight of the fattening pigs in the 20%potato powder group was significantly increased by 22.14%and 16.94%,respectively,compared with the control group and the 10%potato powder group(P<0.05).The muscle fat of the control group and 20%potato powder group was significantly higher than that of 10%potato powder group(P<0.05),and the muscle marbling score of the 20%potato powder group was also significantly higher than that of the control group(P<0.05).The backfat thickness of the control group was significantly increased by 16.26%and 5.86%,respectively,compared with that of the potato powder group(P<0.05).Conclusion:the addition of 10%-20%potato powder to the diet had no significant negative effect on growth and meat quality of the fattening pigs,but reduced carcass yield and muscle tenderness when the potato powder level reached 20%.