江蓠渣发酵饲料饲养生长猪的效果

Effect of Gracilaria Residue Fermented Feed on Growth Performance,Apparent Nutrient Digestibility and Intestinal flora of Growing Pigs

为江蓠渣发酵饲料在生长猪养殖上的推广应用提供参考,选用150头平均体重为(26.14±1.01)kg的健康"杜×长×大"三元杂交生长猪,随机分为5组,分别为对照组(基础日粮),0.1%、0.25%、0.5%和1.0%江蓠渣发酵饲料试验组(在基础日粮中添加),每组3个重复,每个重复10头生长猪,预试期7d,正试期30d,试验结束测定分析生长猪的生长性能、养分表观消化率和直肠肠道菌群数。结果表明:与对照组相比,在生长猪基础日粮中添加0.25%江蓠渣发酵饲料的效果最好,其中,日增重提高23.91%(P<0.05),料肉比降低15.36%(P<0.05);直肠中乳酸杆菌数提高48.06%(P<0.05),而大肠杆菌数降低20.59%(P<0.05);显著提高能量、干物质、粗蛋白质、粗纤维、钙和磷的消化率(P<0.05)。在生长猪基础日粮中添加0.25%的江蓠渣发酵饲料,能提高生长猪的生长性能、饲料利用率和改善肠道微生物菌群。

150 healthy three-way cross growing pigs with 26.14±1.01 kg body weight were randomly divided into five groups with three repetitions.The growth performance,nutrient apparent digestibility and intestinal flora quantity of growing pigs respectively fed with basic diets+0,0.1%,0.25%,0.5%and 1.0%gracilaria residue fermented feed for 7 d preliminary trail period and 30 d regular trail period were measured to provide a reference for popularization and application of gracilaria residue fermented feed in breed of growing pigs.Result:The daily gain,feed/conversion ratio,lactobacillus quantity and Escherichia coli quantity of growing pigs fed with basic diet+0.25%gracilaria residue fermented feed increase by 23.91%(P<0.05),decrease by 15.36%(P<0.05),increase by 48.06%(P<0.05)and decrease by 20.59%(P<0.05)compared with CK respectively and the basic diets+gracilaria residue fermented feed can increase the energy,dry matter,crude protein,crude fibre,Ca and P digestibility significantly(P<0.05).The basic diets+0.25%gracilaria residue fermented feed can increase growth performance and feed/conversion ratio of growing pigs and improve intestinal micro-populations of growing pigs.