Effect of dietary crude protein and metabolizable energy on growth performance and backfat thickness of Lanyu miniature pigs during cool and hot seasons

飼糧不同粗蛋白質及代謝能含量在涼季和熱季對蘭嶼豬生長性能及背脂厚度的影響

陳亮君(Liang-Chun Chen) ； 楊凌緯(Ling-Wei Yang) ； 黃敏雄(Min-Hsiung Huang) ； 朱賢斌(Hsien-Pin Chu) ； 廖宗文(Chung-Wen Liao)

《畜產研究》 50卷1期 (2017/03) Pp. 45-51

摘要

Experiments were conducted to determine the dietary crude protein (CP) and metabolizable energy (ME) levels for growing Lanyu miniature pigs from 7 to 17 weeks of age. Experimental arrangement was 2 × 2 × 2 factorial design with 2 levels of crude protein (13% and 16%), 2 levels of ME (2,800 kcal/kg and 3,100 kcal/kg) and 2 seasons (hot and cool season). Average feed intake, body weight gain, feed conversion ratio, backfat thickness and blood constituents of pigs were used as criteria for the establishment of optimal dietary CP and ME of Lanyu miniature pig. Results showed that Lanyu miniature pigs provided the diet with CP 16% have higher (P ＜ 0.05) average feed intake and average daily gain during 7 - 17 wks. There was no significant difference on feed conversion ratio among all experimental groups. Pigs fed with ME 3,100 kcal/kg regardless of CP in the diet had higher (P ＜ 0.05) increment of backfat thickness during 7 - 12 wks and 7 - 17 wks of age. For the season effect, higher feed intake and average daily gain were obtained when pigs were reared during the cool season (November-April) compared to the hot season (May-October). There were no season effect on feed conversion ratio and increment of backfat thickness. In conclusion, Lanyu miniature pigs fed the diet with CP 16% and ME 2,800 kcal/kg had higher feed intake and average daily gain.

關鍵字

Lanyu miniature pigs ； Crude protein ； Metabolizable energy ； Growth performance ； Backfat thickness

並列摘要

本研究目的為測定7－17週齡生長期蘭嶼豬於涼季及熱季，飼糧中不同粗蛋白質（CP）和代謝能（ME）含量，對生長的影響。選取7週齡蘭嶼豬共80頭，分5批，每批16頭，2頭關在一欄。飲水充分供應及飼料任飼，試驗採2×2×2複因子，即2個等級粗蛋白質CP 13%及16%，2等級代謝能含量ME 2,800 kcal/kg及ME 3,100 kcal/kg和冷熱二季區分，形成8種試驗組合，試驗期間含括一年。測定項目包括豬隻飼料攝食量、每日增重、飼料轉換率、背脂厚度及血液性狀等。結果顯示，蘭嶼豬餵飼CP 16%飼糧，其攝食量及每日增重皆顯著地（P＜0.05）高於餵飼CP 13%飼糧者；而對飼料轉換率及背脂厚度無影響。蘭嶼豬餵飼ME 3,100 kcal/kg者，於試驗前期（7－12週）以及試驗全期（7－17週），其背脂厚度的增加量顯著地（P＜0.05）高於餵飼ME 2,800 kcal/kg者。蘭嶼豬於涼季（11月至4月份）之飼料攝食量及每日增重，皆較熱季顯著增加（5月至10月份）；飼料轉換率及背脂厚度於涼熱季並無影響。蘭嶼豬餵飼CP1 6%及ME 2,800 kcal/kg者，有較佳的每日攝食量及增重。

並列關鍵字

蘭嶼豬 ； 粗蛋白質 ； 代謝能 ； 生長性能 ； 背脂厚度