蛋白質來源對離乳仔豬胃與胰脂肪酶活性發展之影響

本試驗目的為探討以大豆粕、脫脂乳粉以及一半大豆粕與一半脫脂乳粉（混合組）為主要蛋白質來源對離乳仔豬胃及胰脂肪酶活性發展之影響。試驗採用60頭離乳仔豬，其中6頭於離乳日犧牲作為測定之基準，其餘仔豬分別餵飼3種蛋白質來源之飼糧，並於離乳後第5、10和15天採集胃黏膜與胰臟以分析其脂肪酶活性的變化。試驗結果顯示，大豆粕組在離乳後第0至5天期間，日增重和飼料利用效率顯著（P＜0.05）較其它兩組飼料者低，但第6至10天或第11至15天期間之日增重、日採食量及飼料利用效率，三組飼料間均無顯著差異。胃脂肪酶比活性及總活性和胰脂肪酶的比活性及總活性，三種飼糧處理在離乳後第5天、第10天及第15天亦無顯著性，但胰脂肪酶的比活性在離乳後最初10天較離乳日低，不過胰脂肪酶的總活性於離乳第10天以後則顯著地（P＜0.05）較離乳日高，而胃脂肪酶的比活性則不因離乳而發生下降。綜合以上結果顯示，以大豆粕餵飼離乳仔豬，僅於離乳初期對仔豬生長有短暫的影響，至於對胃脂肪酶和胰脂肪酶活性的發展，大豆粕、脫脂乳粉或混合組等蛋白質來源間並沒有顯著差異。

關鍵字

蛋白質來源；離乳仔豬；胃脂肪酶；胰脂肪酶

並列摘要

The purpose of this experiment was to investigate the development of specific activity and total activity of gastric lipase and pancreatic lipase of postweaning piglets using different protein sources, i.e., soybean meal (SBM) , dried skim milk (DSM) and one half soybean meal and one half dried skim milk (1/2 SBM + 1/2 DSM) . Sixty animals was adopted in this study among which 6 were sacrificed for serving as an analytic baseline on the weaning day, and the rest of piglets fed one of three treatment diets and used to measure their lipase activity on the 5, 10 and 15 days after weaning. The results showed that daily weight gain and feed efficiency in piglets fed diet containing soybean meal was significantly lower than those fed diets containing dried skim milk or mixed protein during the period from the first to 5th post weaning (P＜0.05) , but there were no remarkable difference thereafter. The specific activity of gastric and pancreatic lipase, or the total activity of gastric and pancreatic lipase on the 5th, 10th and 15th day postweaning, were not significantly different among the treatment groups. The specific activity of pancreatic lipase for the first 10 days was still lower than the weaning day, but the total activity of pancreatic lipase was significantly higher than the forward day from 10th to 15th day postweaning. We also found that specific and total activities in gastric lipase of piglets were not impaired by weaning process in this study. Therefore, our resuet revealed that piglets fed on a diet containing soybean meal had slight influence on growth performance after weaning, and the protein sources do not have any impact on the development of gastric or pancreatic lipase activity.

並列關鍵字

Protein source ； Postweaning piglet ； Gastric lipase ； Pancreatic lipase

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