复合植物提取物对苏姜猪生长性能、养分消化率及粪中微生物比例的影响

Effects of Compound Plant Extracts on Growth Performance, Nutrient Apparent Digestibility and Manure Microbial Proportion in Sujiang Pigs

为探讨复合植物提取物对苏姜猪生长性能、饲料消化率及粪中主要微生物比例的影响,选择60 kg左右的育肥期苏姜猪150头分成5个组,每组3栏,每栏10头。对照组饲喂玉米-豆粕型基础饲粮,试验组分别在基础饲粮中添加质量分数为0.01%、0.02%、0.03%、0.04%的复合植物提取物,试验期45 d。结果表明:0.02%添加组的末质量比对照组和0.01%添加组显著升高,0.02%添加组与对照组相比平均日增量显著提高,料质量比显著降低;0.02%和0.03%添加组与对照组相比粗蛋白质表观消化率显著提高,0.03%、0.04%添加组与0.02%添加组相比粗灰分表观消化率显著提高,0.02%添加组显著高于对照组和0.01%添加组;与对照组相比,试验组大肠杆菌数量显著降低,0.02%、0.03%、0.04%添加组乳酸菌数量显著提高。综上所述,在基础饲粮中添加质量分数为0.02%复合植物提取物有利于提高育肥期苏姜猪生长性能,提高营养物质的表观消化率,改善粪中微生物比例。

This study was conducted to investigate the effects of compound plant extracts(CPE) on the growth performance,nutrient apparent digestibility and manure microbial proportion in Sujiang pigs.A total of 150 Sujiang pigs with the average body mass of 60 kg were randomly divided into5 groups,3 replicates each group,10 heads each replicate.Pigs in control group were fed a basal diet,while pigs in trial groups were fed bythe experimentaldiets supplemented with 0.01%,0.02%, 0.03%,0.04% CPE in the basal diets,respectively.The experimental period was 45 days.The results showed that the final weight of 0.02% CPE group was significantly higher than that of control group and 0.01% CPE group.Compared with control group,the average daily gain of 0.02% CPE group was significantly higher,and the feed gain ratio was significantly lower.The crude protein apparent digestibility of 0.02% and 0.03% CPE group was significantly higher than that of control group.The crude ash apparent digestibility of 0.03% and 0.04% CPE group was significantly higher than that of 0.02% CPE group,and 0.02% CPE group was significantly higher than that of control group and 0.01% CPE group.The number of Escherichia coli in experimental groups was significantly lower than that in control group,and the number of lactic acid bacteria in control group was significantly lower than that in 0.02%,0.03% and 0.04% CPE group.Therefore,adding 0.02% CPE into basal diet of Sujiang pig during fattening period can improve growth performance,feed nutrition apparent digestibility and manure microbial proportion.