补料日龄对哺乳期仔猪消化酶活性的影响研究

为研究补料日龄对哺乳期仔猪消化道主要消化酶活性的影响,试验采用单因素完全随机试验设计,选取母猪分娩时间相差在48h之内、泌乳性能良好、产仔数接近的12窝仔猪,分4个处理组,分别于仔猪出生后7、10、15日龄和21日龄开始补料。结果表明:各试验组仔猪胃凝乳酶活性呈先升高后降低趋势,15日龄时仔猪胃凝乳酶活性达到最高(P<0.05);10日龄补料组到28日龄断奶时胃蛋白酶活性与胰蛋白酶活性最高(P<0.05);7日龄与10日龄补料组仔猪28日龄断奶时脂肪酶与淀粉酶活性最高(P<0.05)。本试验证明,仔猪出生后10日龄补料对28日龄断奶仔猪消化酶活性影响最小。

Effect of Feeding Ages on Digestive Enzyme Activity of Suckling Piglets

The trial was conducted to study the effect of feeding ages on digestive enzyme activity of suckling piglets.Twelve litters piglet of delivering time in 48 h, good lactating performance, close to litter size were selected and were divided into 4 treatment groups, which were separately fed at d 7,10,15 and 21 after the piglets were born.The results showed that the activity of gastric chymosin presented the tendency of increasing firstly, then decreasing.The activity of gastric chymosin reached the maximum at d 15(P < 0.05).The pepsin and trypsin activity at d 10 feeding group was the highest when weaned at d 28(P < 0.05).The lipase and amylase activity at d 7 and 10 feeding groups were the highest when weaned at d 28.The trial result also showed that the digestive enzyme activity at d 10 feeding group was minimum for 28 day weaning piglet.