丙氨酰谷氨酰胺对断奶仔猪生长性能及血清生化指标的影响

Effect of Alanyl-Glutamine on Growth Performance and Serum Biochemical Indexes of Weaned Piglets

【研究目的】为了研究丙氨酰谷氨酰胺(Ala-Gln)对断奶仔猪生长性能和血清生化指标的影响。【方法】试验选择大×长白二元杂交仔猪48头,21天断奶,随机分成4组,每组6个重复,每重复2头(公母各1头)。A组为对照组,饲喂基础日粮;B、C和D组为试验组,分别饲喂在基础日粮添加0.1%、0.3%和0.5%Ala-Gln的日粮,试验期20天。【结果】结果表明,在21天断奶仔猪日粮中添加0.1%Ala-Gln可显著提高21～31天仔猪的平均日增重和饲料转化率(P<0.05),添加0.1%、0.3%和0.5%Ala-Gln可在正常生理范围内降低仔猪血清葡萄糖、甘油三酯、总胆固醇和尿素氮含量,提高仔猪血清总蛋白含量,随着日粮中Ala-Gln添加水平提高,21～31天仔猪的平均日增重和饲料转化率均以二次曲线方式升高(二次,P=0.042和0.043),31和41天血清葡萄糖含量、31天血清甘油三酯、总胆固醇和尿素氮含量以线性方式下降(线性,P=0.034,0.001,0.008和0.001)。添加0.3%Ala-Gln就可达到理想的促生长效果。【结论】提示Ala-Gln可提高断奶仔猪生长性能。

[OBJECTIVE]This trial was conducted to study the effects of alanyl-glutamine （Ala-Gln） on growth performance and serum biochemical indexes of weaned piglets. [METHOD]Forty eight crossbred LandracexLargewhite weaned piglets at the age of 21 day were selected and randomly divided into 4 treatments with 6 replicates 2 piglets （a male, a female）. Group A （control） was fed the basal diet and Group B, C and D as three trial groups were fed the basal diet added 0.1%, 0.3% and 0.5% Ala-Gln respectively and the trial lasted 20 days. [RESULTS]The results showed that average daily gain and feed conversion rate were significantly increased （P〈0.05） by adding 0.1% Ala-Gln and level of serum glucose, triglyceride, total cholesterol and blood urea nitrogen were decreased and serum total protein was increased within the framework of physiological by adding 0.1%,0.3% and 0.5% Ala-Gln. With the increasing Ala-Gln supplementation levels, average daily gain and feed conversion rate were increased （quadratic, P=-0.042 and 0.043） at 21- 31 day and level of serum glucose at 31 and 41 day and level of serum triglyceride and total cholesterol and blood urea nitrogen at 31 day were decreased （linear, P=0.034, 0.001, 0.008, 0.001 and 0.062） and supplementation 0.3% Ala-Gln had the best effect. [CONCLUSION]The results indicated Ala-Gln could promote effect on growth performance of weaned piglets.