小球藻对罕山白绒山羊繁殖性能及血清细胞因子含量的影响

Effects of Chlorella on reproductive performance and serum cytokine content of Hanshan White cashmere goats

为了探讨小球藻对母山羊繁殖性能的影响,试验选择妊娠130 d左右罕山白绒山羊母羊44只,随机分为2组,各组22只,对照组采用基础饲粮,即全混合饲粮(TMR),无小球藻;试验组在每只每日基础饲粮中加40 mL小球藻(小球藻有效含量为1000万/mL)。试验期为50 d,其中14 d预试期、正试期36 d,测定母羊繁殖性能指标、采食量、日增重、血液指标等并进行经济放益分析。结果表明:小球藻对羔羊初生重没有明显影响(P>0.05),但使羔羊体重和日增重明显提高,试验组羔羊36日龄体重比对照组提高13.49%(P<0.01),日增重提高18.05%(P<0.01);试验组羔羊36日龄内腹泻率和死亡率明显下降,试验组和对照组腹泻率分别为13.64%、37.50%,死亡率分别为9.09%、25.00%;试验组母羊日均采食量比对照组下降9.89%;试验组母羊血清IL-6(P<0.01)、IL-1β(P<0.01)和IFN-ɑ(P<0.05)含量均明显下降,血清SOD和GSH含量均显著提高(P<0.05);试验组每只羔羊利润(111.57元/只)比对照组(88.39元/只)高23.18元/只,提高26.22%。说明小球藻对母羊繁殖性能具有明显的正效应。

In order to investigate the effects of Chlorella on reproductive performance of female goats,44 Hanshan white cashmere goat ewes at 130 days of gestation were randomly divided into 2 groups with 22 ewes in each group.The ewes in control group were fed with basal diet(TMR)without chlorella.The ewes in experimental group were fed with basal diet supplemented with 40 mL chlorella per day(the effective content of Chlorella was 10 million/mL).The experiment lasted for 50 days,including a 14-day pre-trial period and a 36-day trial period.The results showed as follows:chlorella had no significant effect on the birth weight of lambs(P>0.05),but the body weight and daily gain of lambs were significantly increased compared with the control group,the body weight and daily gain of lambs at 36 days of age in experimental group were increased by 13.49%(P<0.01)and 18.05%(P<0.01).The diarrhea rate and mortality rate of lambs at 36 days of age in experimental group and control group were 13.64%and 37.50%,respectively,and the mortality rate was 9.09%and 25.00%,respectively.The average daily feed intake of ewe in experimental group was 9.89%lower than that in control group;The serum IL-6(P<0.01),IL-1β(P<0.01)and IFN-alpha(P<0.05)contents of experimental ewe were significantly decreased,and serum SOD and GSH contents were significantly increased(P<0.05).The per lamb profit in the experimental group(111.57 yuan/lamb)was 23.18 yuan/lamb higher than that in the control group(88.39 yuan/lamb),increasing by 26.22%.The results indicated that chlorella had obvious positive effect on the reproductive performance of ewe.