外源5′-腺苷酸二钠和5′-鸟苷酸二钠对断奶仔猪生长性能及抗氧化能力的影响

Effects of adenosine 5′monophosphate and guanosine 5′monophosphate on the growth performance and antioxidant capability in weaned piglets

将90头28日龄断奶的"杜×长×大"三元杂交仔猪随机分成3组,每组3个重复,对照组饲喂基础日粮,试验Ⅰ和Ⅱ组饲喂在基础日粮中分别添加0.03%5′-腺苷酸二钠和5′-鸟苷酸二钠的日粮,试验期28 d,测定仔猪生长性能和试验开始后第7、14和28天血清中的超氧化物歧化酶(SOD)活性、过氧化氢酶(CAT)活性、总抗氧化能力(T-AOC)和丙二醛(MDA)含量,研究外源5′-腺苷酸二钠和5′-鸟苷酸二钠对断奶仔猪生长性能和抗氧化功能的影响.结果表明,Ⅰ和Ⅱ组仔猪断奶后不同时间血清中的SOD活性呈下降趋势(P>0.05),其中,Ⅰ组仔猪第14天SOD活性显著低于对照组(P<0.05),对其他抗氧化指标没有显著影响(P>0.05),各组仔猪生长性能差异不显著(P>0.05).可见,日粮中分别添加5′-腺苷酸二钠和5′-鸟苷酸二钠对仔猪生长性能均无显著影响,5′-腺苷酸二钠有降低仔猪血清中SOD活性的作用.

90 piglets（Duroc×Landrace×Large white） weaned at 28th day were randomly divided into 3 groups of 3 replicates,control group was fed with basal diet,test groupⅠand Ⅱ were supplemented with 0.03% adenosine 5′monophosphate and guanosine 5′monophosphate respectively.The experiment lasted for 28 days.Growth performance,activity of superoxide dismutase（SOD）,total anti-oxidation（T-AOC）,catalase（CAT） and content of malondiade-hyde（MDA） at 7th,14th and 28th day were determined.The result indicated that there was a tendency to decrease activity of SOD at different time in group Ⅰand Ⅱ（P〉0.05）,activity of SOD at 14th day was decreased in groupⅠcompared with control group（P〈0.05）,there was no significant difference in growth performance and other antioxidant index（P〉0.05）.