精胺对断奶仔猪生产性能和血清生化指标的影响

为了研究精胺对断奶仔猪生产性能和血清生化指标的影响,选用30头(21±2)d断奶的健康、体重相近的仔猪,随机分为5个处理组,每个处理6个重复,断奶当天起,分别每天口腔灌服0,300,600,900和1 200μmol的精胺,连续灌服3 d,试验期为14 d。结果表明:灌服900和1 200μmol的精胺,可显著提高仔猪的平均日采食量(P<0.05);在断奶后第7天,与对照组相比,灌服900和1 200μmol两组血清二胺氧化酶(DAO)活性分别降低了24.11%和23.17%(P<0.05),血清尿素氮含量分别增加了50.31%和49.69%(P<0.05);在断奶后第14天,与对照组相比,灌服900和1 200μmol两组DAO活性分别降低了16.80%和21.14%(P<0.05),而其他血液指标含量无显著差异(P>0.05)。

Effect of spermine on growth performance and serum biochemical parameters in weaned piglets

This experiment was conducted to evaluate the effect of spermine on growth performance and serum biochemical parameters in weaned piglets.Thirty crossbred piglets,weaned at 21±2 days with an average body weight of 5.80±0.61 kg,were randomly allotted to five groups.Each treatment was replicated six times.Piglets were housed in a nursery and fed a basal diet of corn plus soybean meal.The piglets were fed this diet for 14 days.On day 1,2 and 3 after weaning,the piglets were infused respectively with spermine of 0,300,600,900 and1 200 μmol/d.The results showed that: ①in the groups of 900μmol/d and 1 200 μmol/d spermine,average daily feed intake(ADFI) was significantly increased(P<0.05);②on day 7,compared to control group,the groups of 900 μmol/d and 1 200 μmol/d spermine,serum diamine oxidase(DAO) activities were decreased by 24.11%,23.17%(P<0.05) respectively and serum urea nitrogen(BUN) were increased by 50.31%,49.69%(P<0.05),respectively;③on day 14,compared to control group,the groups of 900 μmol/d and 1 200 μmol/d spermine,serum DAO activities were decreased by 16.80%,21.14%(P<0.05),respectively.