构树叶对育肥猪生产性能、肉品质及营养物质表观消化率的影响

The Effect of BroussonetiapapyriferaLeaf on the Production Performance,Meat Quality and Apparent Digestibility of Fatting Pigs

为探究日粮中添加构树叶粉对育肥猪生产性能、肉品质及营养物质表观消化率的影响,将30头日龄相近、体质量约为60kg的杜×长×大三元杂交猪随机分成2组(对照组和试验组),对照组饲喂基础日粮,试验组在基础日粮中添加10%的构树叶粉,分别测定生产性能、屠宰性能、肉品质及对营养物质的表观消化率。结果显示,与对照组相比,试验组平均日增体质量降低了2.06%,平均日采食量提高了0.78%,料重比提高了2.89%,差异均不显著;背膘厚度显著降低28.57%,眼肌面积显著提高9.96%;肌内脂肪含量、谷氨酸钠含量分别显著提高20.40%、13.62%;粗蛋白、干物质、钙及总能的表观消化利用率分别显著降低5.01%、5.61%、15.27%、5.72%,磷的表观消化率显著提高了10.90%。可见,添加适量构树叶粉,不影响育肥猪生产性能,可改善肉品质。

The present study was aimed to investigate the effect of the production performance,meat quality and apparent digestibility of fatting pigs by dietary supplementation of Broussonetia papyriferaleaf meal.Thirty crossbred Duroc×Landrace×Yorkshire（DLY）growing pigs which weighed about 60 kg and similar-day-old were selected and divided into two groups randomly（the control and experimental groups）.The control group was fed with basal diet,the experimental group was fed with diet which comprised with 10% Broussonetia papyriferaleaf and 90% basal diet.The growth and slaughter performance,meat quality and apparent digestibility were measured respectively.The results showed that,compared with the control group,the AGD of experimental group was decreased by 2.06% and the ADFI and F/G were increased by 0.78% and 2.89%.The eye muscle area,the IMF and the sodium glutamate content of the experimental group were significantly increased by 9.96%,20.40% and 13.62% respectively and the back-fat thickness was significantly decreased by 28.57%.The apparent digestibility of CP,DM,Ca and CE of experimental group were significantly decreased by 5.01%,5.61%,15.27% and 5.72%,and the P was apparently increased by 10.90%.In conclusion,the proper proportion addition of Broussonetia papyriferaleaf meal in the diet of fatting pigs had positive effect to improve the meat quality,while had no negative effects on production performance.