不同水平饲用桑粉对育肥猪生长性能和肉质的影响  

Effects of Dietary Forage Mulberry on Growth Performance and Meat Quality of Finishing Pigs

作　　者：杨静[1] 李同洲[1] 曹洪战[1] 卜海燕 侯希峰 芦春莲[1] 

机构地区：[1]河北农业大学动物科技学院,河北农业大学猪业科学研究所,河北保定071000 [2]河北省兆江养殖有限公司,河北石家庄050501

出　　处：《中国畜牧杂志》2014年第7期52-56,共5页Chinese Journal of Animal Science

基　　金：河北省生猪产业技术体系项目-猪营养与饲料岗位

摘　　要：本试验旨在研究饲粮中添加不同水平的饲用桑粉对于育肥猪生长性能和肉质的影响。选用体重（65．07±1．70）kg健康杜长大三元杂交肥育猪72头，随机分为4组，每组3个重复，每个重复6头，分别饲喂基础饲粮（试验I组，即对照组）、含10％饲用桑粉饲粮（试验Ⅱ组）、含15％饲用桑粉饲粮（试验Ⅲ组）、含20％饲用桑粉饲粮（试验Ⅳ组），试验期66d。结果表明：Ⅱ、Ⅲ组平均日增重与I组相比差异不显著（P〉0．05），ⅣV组显著低于其他各组（P〈0．05）；较对照组，Ⅱ组的饲料增重比未达显著水平（P〉0．05），而IⅢ、Ⅳ组显著提高（P〈0．05）；与对照组相比，饲粮中添加饲用桑粉可减缓猪屠宰后肌肉pH的下降速度；Ⅱ、Ⅲ、Ⅳ组显著提高肌内脂肪含量（P〈0．05），但三组之间差异不显著（P〉0．05）；Ⅲ、Ⅳ组背膘厚度显著降低（P〈0．05），而Ⅱ组与I组相比，差异不显著（P〉0．05）；Ⅲ、Ⅳ组猪肉中亚油酸和多不饱和脂肪酸含量显著高于I、Ⅱ组（P〈0．05），Ⅲ组饱和脂肪酸含量显著低于其他各组（P〈0．05）。结果提示，育肥猪日粮中添加10％-15％的饲用桑粉，在不影响其生长速度的条件下可改善猪肉品质。This experiment was conducted to investigate the effects of dietary mulberry leaves on the growth performance and meat quality of finishing pigs. Seventy-two finishing pigs with the same initial body weight of （65.07±1.70） kg were randomly divided into four groups with three replicates and six pigs per replicate. Pigs in the four groups were fed one of the basal diet, the basal diet containing 10% forage mulberry （ Ⅱ ）, the basal diet containing 15% forage mulberry （Ill）and the basal diet containing 20% forage mulberry（iV）, respectively. The experiment lasted 66 days. The results showed that compared with the basal diet, the average daily gain of treatment Ⅱ,Ⅲ were not significantly changed （P〉0.05）, treatmentⅣwas significantly decreased （P〈0.05）, the feed to gain ratio of treatment Ⅱ was not significantly changed （P〉0.05）, but treatment Ⅲ、Ⅳ was significantly increased （P〈0.05）. Compared with the basal diet, forage mulbetTy powder could slow down the decrease speed of pH, the contents of fat in muscle of treatment II , Ⅲ、Ⅳ was significantly increased （P〈0.05）and there was not significantly difference among three treatments （P〉0.05） ; compared with the basal diet, back fat thickness of treatment Ⅲ、Ⅳ were significantly decreased （P〈0.05）, but back fat thickness of treatment II was not significantly change （P〉0.05） ; The relative content of linoleic acid and polyunsaturated fatty acids （PUFA） of finishing pigs of treatment m, Iv were significantly increased（P〈0.05） compared with treatment Ⅰ andⅡ , the relative content of saturated fatty acid of treatment Ⅲ was significantly decreased （P〈0.05）compared with the others. The resuh suggest ed that the basal diet of finishing pigs adding 10% 15% forage mulberry can not affect the growth performancebut improve pork quality.

关 键 词：饲用桑粉 生产性能 肉品质 肥育猪 

分 类 号：S828.5[农业科学—畜牧学]