蛋白質和脂肪含量對離乳仔豬生長性能、胰脂肪和胰輔脂肪活性發展之影響

本試驗目的為探討飼糧添加不同大豆油和粗蛋白質含量對離乳仔豬生長性能、胰脂肪酶和胰輔脂肪酶比活性和總活性發展之影響。飼糧處理為2×2複因子設計：添加大豆油含量為3%和6%；粗蛋白質含量為18%和22%。採用68頭四週齡離乳仔豬，其中4頭仔豬於離乳日時犧牲，其餘64頭逢機分配於各處理組，分別於離乳後第7、14、21及28天時各選取4頭仔豬，採集胰臟供測定胰脂肪酶和胰輔脂肪酶比活性和總活性。試驗結果顯示，離乳後第7至14天和14至21天，仔豬餵飼22%粗蛋白質配合6%大豆油飼糧之日增重顯著（P＜0.05）高於餵飼18%粗蛋白質配合3%大豆油者。離乳後第21至28天，仔豬餵飼18%粗蛋白質配合6%大豆油飼糧之日增重顯著（P＜0.05）高於18%粗蛋白質配合3%大豆油者和22%粗蛋白質配合3%大豆油二飼糧處理組。離乳第0至7天，仔豬餵飼22%粗蛋白質配合6%大豆油飼糧之飼料效率顯著（P＜0.05）優於18%粗蛋白質配合6%大豆油和22%粗蛋白質配合3%大豆油飼糧組。離乳第7至14天，仔豬餵飼22%粗蛋白質配合6%大豆油飼糧之飼料效率顯著（P＜0.05）優於18%粗蛋白質配合3%大豆油者。全期仔豬之日增重、採食量及飼料效率，各飼糧處理組間無顯著差異。仔豬離乳第7和14天，胰脂肪酶比活性和總活性各飼糧間沒有顯著差異，但於離乳第21和28天，仔豬餵飼22%粗蛋白質配合6%大豆油飼糧之胰脂肪酶比活性和總活性顯著（P＜0.05）高於18%粗蛋白質配合3或6%大豆油二飼糧處理組。離乳第7、14和21天，胰輔脂肪酶比活性和總活性各飼糧間無顯著性，但於離乳第28天，仔豬餵飼22%粗蛋白質配合6%大豆油飼糧之胰輔脂肪酶比活性和總活性顯著（P＜0.05）高於18%粗蛋白質配合3%大豆油飼糧。因此，仔豬於離乳最初兩週餵飼22%粗蛋白質配合6%大豆油飼糧之生長性能較佳，但是此期間各飼糧組對胰脂肪酶或胰輔脂肪酶之比活性和總活性差異不顯著。不過；仔豬餵飼22%粗蛋白質配合6%大豆油飼糧組之胰脂肪酶比活性和總活性以及胰輔脂肪酶比活性和總活性，分別在離乳第21和28天有較高現象。

關鍵字

蛋白質；脂肪；離乳仔豬；胰脂肪酶；胰輔脂肪酶

並列摘要

The objective of this experiment was to investigate the effect of rendered fat and crude protein (CP) levels on the growth performance, specific activity and total pancreatic lipase and colipase activity of postweaning piglets. This experiment was a 2×2 factorial design with 3 or 6% soybean oil (SO), and 18 or 22% crude protein levels. Sixty-eight piglets were used in this study. Four piglets per trial group were randomly selected and sacrificed on 7, 14, 21 and 28 d postweaning to measure pancreatic lipase and colipase activity. Four piglets on weaning day were sacrificed to collect pancreas organs to serve as the basal line. The results revealed that piglets fed a diet containing added 6% SO and 22% CP had significantly (P ＜ 0.05) higher aver age daily weight gain (ADG) than those fed of diets containing 3% SO and 18% CP during 7 to 14 d or 14 to 21 d postweaning. Piglets fed a diet containing rendered 6% SO and 18% CP showed better (P ＜ 0.05) ADG than piglets fed diets comprised of 3% SO and 18% CP or 3% SO and 22% CP during 21 to 28 d postweaning. Piglet feed efficiency fed a diet containing 6% SO and 22% CP were remarkably (P ＜ 0.05) better than those fed 6% SO and 18% CP or 3% SO and 22% CP from 0 to 7 d postweaning. Piglets fed diets containing 6% SO and 22% CP were (P ＜ 0.05) better than those fed a diet containing 3% SO and 18% CP from 7 to 14 d postweaning. The specific and total pancreatic lipase activity within those diets were not significantly different 7 and 14 d postweaning. However, pigs fed with diets containing 6% SO and 22% CP were remarkably (P ＜ 0.05) better than those fed 3% SO and 18% CP or containing 6% SO and 18% CP of diets on 21 and 28 d postweaning. No significant specific and total pancreatic colipase activity was manifested among those diets on 7, 14, and 21 d postweaning. However, diets containing 6% SO and 22% CP produced higher colipase activity than piglets fed diets containing 3% SO and 18% on 28 d postweaning. Therefore, postweaning piglets fed a diet comprising 6% SO and 22% CP would show better growth performance during 0 to 14 d postweaning. However, this dietproduced lower specific and total pancreatic lipase or colipase activities. Higher specific and total pancreatic lipase activity was found after 21 d postweaning and colipase activity on the 28 d postweaning colipase activity than fed of diet containing 3% SO with 18% on 28 d postweaning. Therefore, postweaning piglets fed a diet comprising 6% SO with 22% CP would show better growth performance during from 0 to 14 d postweaning, but the diet had lower effect on the development of specific activity and total activity of pancreatic lipase or colipase. However, there is a trend that piglets had higher specific activity and total activity of pancreatic lipase after 21 d postweaning and colipase activity on the 28 d postweaning.

並列關鍵字

Protein ； Fat ； Postweaning piglets ； Pancreatic lipase ； Pancreatic colipase

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