日粮添加不同水平酵母β-1,3/1,6-葡聚糖对断奶仔猪生产性能和血清生理指标的影响

为了探讨酵母-β1,3/1,6-葡聚糖对断奶仔猪生产性能、血清理化指标的影响,试验选择品种一致,体重接近,公、母各半,日龄为(28±3)d的长×大二元断奶仔猪160头,随机分成4个处理组,分别连续添加(0、50、100和200mg/kg)的-β1,3/1,6-葡聚糖,试验期为28d。结果表明:断奶仔猪日粮中添加-β1,3/1,6-葡聚糖有提高血清总蛋白浓度的趋势(P<0.01),可极显著(P<0.01)提高血清球蛋白浓度,显著(P<0.05)降低血清总胆固醇浓度和LDL浓度,对血清甘油三酯浓度、HDL浓度和葡萄糖浓度均无显著影响(P>0.05)。同时也发现,断奶仔猪日粮中连续添加50mg/kg的β-1,3/1,6-葡聚糖,可显著提高日增重及改善饲料转化率,显著(P<0.05)降低腹泻发生频率,有提高日采食量的趋势,各处理组死亡率无显著差异。剂量太高有提高腹泻发生率的趋势。上述试验表明,断奶仔猪日粮中添加50 mg/kg的β-1,3/1,6-葡聚糖可调节其脂质代谢和蛋白质代谢,增强机体免疫功能,从而显著提高其生长性能。

Effects of β-1,3/1,6-Glucan from Saccharomyces cerevisiae on Growth Performance, Serum Physiological and Biochemical Parameters in Weaned Piglets

The present study were conducted to evaluate the effects of dietary supplementation with 0,50,100,200 mg/kg of β-1,3/1,6-glucan extracted from Saccharomyces cerevisiae on growth performance,protein metabo-lism and lipid metabolism.A total of 160(Landrace ×Large White) weaned piglets at(28±3) d of age were randomly allocated to four treatments according to intial bodyweight and gender,five replicates per treatment,8 pigs per replicate(per pen).Feed and water were freely available to weaned piglets during the whole times.Our results showed that oral supplementation with β-1,3/1,6-glucan can significantly increase serum globulin concentration,significantly decrease serum total cholesterol(TC)and LDL concentration(P < 0.05).No significant effects were discovered on serum glucose,albumin,TG(total triglyceride) and HDL concentrations(P > 0.05),only a numerical increasing trend in total protein compared to non-treated control.Forever,our studies also found that 50 mg/kg β-1,3/1,6-glucan supplementation can significantly enchance ADG and ratio of gain/ feed,decrease significantly diarrhea frequency(P < 0.05).However,no significant effect of β-1,3/1,6-glucan was observed on ADFI and mortality rate(P > 0.05),only an increasing trend in ADFI compared to non-treated control.It is concluded that protein metabolism,lipid metabolism,nonspecific immune function and growth performance of weaned piglets can be improved by dietary supplementing with 50 mg/kg β-1,3/1,6-glucan.