丝兰属提取物及有效微生物对育成期水貂生长性能、营养物质消化率及血清生化指标的影响

Effects of YSE and EM on Growth Performance, Nutrients Digestibility and Serum Biochemical Indices of Growing Minks

本试验旨在研究饲粮中添加丝兰属提取物(YSE)和有效微生物(EM)对育成期水貂的生长性能、营养物质消化率及血清生化指标的影响。试验采用两因素试验设计,选取300只60日龄健康育成前期水貂共120笼,随机分为6组,每组20个重复。EM的添加量分别为0、200 mg,YSE的添加量分别为0、200、400 mg。预试期1周,试验期2个月。结果表明:YSE可改善母貂Ⅰ、Ⅱ期平均日增重(P<0.05),EM可显著提高母貂Ⅱ期日增重(P<0.05);试验Ⅰ期,YSE可显著提高粗脂肪(EE)和磷(P)的消化率(P<0.05),降低粗灰分(Ash)和钙(Ca)的消化率(P<0.05);试验Ⅱ期,YSE显著提高Ca消化率(P<0.05),EM显著提高Ash和P消化率(P<0.05);对P的消化率,两期均存在YSE和EM互作效应(P<0.05);YSE可提高血清中甘油三酯(TG)和高密度脂蛋白含量(HDL)(P<0.05),EM可提高血清中TG含量(P<0.05)。综上所述,饲粮中添加200 mg YSE和200 mg EM改善了母貂的生长性能,200 mg YSE能够提高试验Ⅰ期水貂对P和EE消化率及血清中TG和HDL的含量,长期添加200 mg EM可提高水貂对Ash和P的消化率。

The present experiment was conducted to study the effects of YSE （yucca schidigera extract） and EM （effective microorganisms） on growth performance, nutrients digestibility and serum biochemical indices of growing minks. The two- factor cross experimental design was adopted. A total of 300 healthy growing minks at the age of 60 days were randomly divided into 6 groups with 20 replicates in each group. The addition amount of EM was 0,200 mg, and the addition amount of YSE was 0,200,400 mg. The pretest period lasted for a week and the experiment period lasted for two months. The results showed as follows： Both YSE and EM could improve body weight, and average daily gain of female minks during period II （P〈0.05）.During period I, YSE improved crude fat digestibility and phosphorus digestibility （P〈0.05）, reduced the ash digestibility and calcium digestibility （P〈0.05）. During period II, YSE improved calcium digestibility （P〈0.05）, and EM improved ash digestibility and phosphorus digestibility （P〈0.05）. The interaction of YSE and EM had effects on the phosphorus digestibility during period I and II （P〈0.05）.YSE increased the serum TG and HDL concentration （P〈0.05）, EM increased the serum TG concentration （P〈0.05）. It could be concluded that 200 mg YSE and 200 mg EM per kilogram diet could improve growth performance of female minks, 200 mg YSE increased phosphorus and crude fat digestibility as well as TG and HDL contents, chronic supplementation of 200 mg EM improved ash and phosphorus digestibility.