The effect of source and level of dietary fiber on growth performance, backfat thickness and blood profiles of Lanyu pigs

飼糧中粗纖維來源及含量對蘭嶼豬生長性能、背脂厚度及血液生化值之影響

李恒夫(Herng-Fu Lee) ； 劉芳爵(Fang-Chuei Liu)

《畜產研究》 53卷3期 (2020/09) Pp. 159-168

https://doi.org/10.6991/JTLR.202009_53(3).0004

摘要

The purpose of this experiment was to study the effect of source and level of dietary fiber on growth performance, backfat thickness and blood profiles of Lanyu pig. A total of 24 Lanyu pigs (initially 9 kg body weight and 11 weeks of age), half castrated and half female, were randomly assigned to three treatments and provided diets: 1) USDA 1160 diet referred to the United States miniature pig formula (USDA 1160) containing 5% alfalfa; 2) WB 10 diet containing 10% wheat bran (WB) and 3) WB 20 diet containing 20% wheat bran, for 12-week feeding trial. The trial incorporated protein and digestion design, with the three groups having the crude fiber content of USDA 1160, WB 10 and WB 20 as 3.56, 3.23 and 3.95%, respectively. All the pigs were weighed every three weeks for the measurement of growth performance. At the initiation, the sixth week and the 12^(th) week -end of the experiment, backfat thickness and blood biochemical parameters were measured. Results showed that there was no difference on growth performance and increment of backfat thickness amongst treatments. For the blood profiles, pigs in the WB 20 group had higher (P ＜ 0.05) creatinine and lower (P ＜ 0.05) triglyceride (TG) than the USDA 1160 group at the end of the experiment. In addition, pigs in the WB 10 group also had lower (P ＜ 0.05) TG than the USDA 1160 group at the end of the experiment. Total protein (TP), blood urine nitrogen (BUN), glucose and cholesterol were not different amongst treatments. In summary, Lanyu pigs fed diet with 10 or 20% wheat bran could maintain normal growth without over deposition of backfat, which indicated wheat bran could be a fiber source for Lanyu pigs.

關鍵字

Backfat thickness ； Crude fiber ； Growth performance ； Lanyu pigs

並列摘要

本試驗旨在探討飼糧中粗纖維來源及含量對蘭嶼豬生長、背脂厚度堆積及血液生化值之影響。試驗採用24頭公母各半之平均11週齡、體重9公斤蘭嶼豬，逢機分至3組進行12週飼養試驗，第一組為USDA 1160，其飼糧參照美國小型豬配方組成（USDA 1160），含5%苜蓿；第2組及第3組分別含10%麩皮之WB 10組飼糧及含20%麩皮之WB 20組飼糧。試驗飼糧均採等蛋白質及等消化能設計，三組飼糧粗纖維含量分別為3.56、3.23及3.95%。試驗期間每三週測定豬隻生長性能，於試驗開始日、試驗第6週及第12週結束時測定背脂厚度及血液生化值。試驗結果顯示，蘭嶼豬於體重9至24公斤之間之生長性能及背脂厚度變化量，三組間差異不顯著。血液生化值方面，WB 20組於試驗結束日之肌酸酐高於USDA 1160組（P＜0.05），但三酸甘油酯低於USDA 1160組（P＜0.05），而WB 10組於試驗結束時之三酸甘油酯亦低於USDA 1160組（P＜0.05）。總蛋白質、尿素氮、葡萄糖及膽固醇，各組間差異不顯著。綜合上述，飼糧中含10或20%麩皮可維持蘭嶼豬的生長，且不會過度累積背脂，因此麩皮可作為蘭嶼豬飼糧纖維來源之原料選擇。

並列關鍵字

背脂厚度 ； 粗纖維 ； 生長性能 ； 蘭嶼豬