土番鴨對國產羽毛粉利用效率之評估

本省家禽屠宰所產生之羽毛副產物，數量龐大，如不加以利用，將被當成廢棄物棄置。而國產羽毛粉化製工廠，加工條件不同，致使各產品品質不一，實有必要就各工廠之產品進行評估，以作為政府輔導業者改進製造流程之依據。試驗一：土番鴨0－3週齡，飼養於育雛室內，均餵飼相同之雛鴨飼糧，採任食，飲水自由供應，3週齡時逢機分為六個處理組，每組三重複，每重複20隻，公母各半。對照組不添加羽毛粉及魚粉，魚粉添加組含魚粉3.5%，但不含羽毛粉，其餘四組分別添加不同化製廠（A、B、C及D）之羽毛粉3.5%，試驗期間測定3－7週齡之採食量、體重及飼料利用效率。試驗二：14週齡鴨土番鴨25隻，隨機分為五個處理組，每組5隻，絕食48小時後，其中四組每隻灌食40公克不同廠牌羽毛粉；另一組為非灌食組，目的為收集內源性胺基酸。收集48小時糞便以分析胺基酸含量及計算胺基酸消化率。試驗一結果顯示：對照組與魚粉添加組之採食量比羽毛粉添加組者稍多，且在5－7週齡時對照組與A、B、C及D廠牌羽毛粉添加組間差異顯著（P＜0.05），而3－7週齡時對照組與魚粉添加組及B廠牌羽毛粉添加組差異不顯著，但與A、C及D廠牌等羽毛粉添加組差異顯著（P＜0.05），飼料利用效率方面，對照組及魚粉添加組在3－5週齡及5－7週齡有較羽毛粉添加組為差的趨勢，然而在3－7週齡時對照組與魚粉添加組及A廠牌、B廠牌、D廠牌等羽毛粉添加組沒有顯著差異外，但與C廠牌羽毛粉添加組有顯著差異（P＜0.05）。增重方面，3－5週齡時，以對照組最差，C廠牌羽毛粉組最好，有顯著差異（P＜0.05）；而5－7週齡各組差異不顯著。試驗二結果顯示：各廠牌羽毛之胺基酸消化率平均值介於82.2－84.4%，個別胺基酸消化率在各廠牌間皆無顯著差異。本試驗於實用飼糧中添加3.5%國產羽毛粉，對土番鴨生長沒有不良影響，應可供為土番鴨飼養時之蛋白質來源。

關鍵字

土番鴨；羽毛粉；胺基酸消化率

並列摘要

The objectives of this study were to investigate the utilization and digestibility of domestic feather meal in mule ducks. Trial 1 Mule ducks at three weeks of age were randomly assigned into six treatment groups with three replicate pens in each. There were 20 ducks in each pen with 10 males and 10 females. Ducks in the control group were provided with soybean-corn based diet and 3.5% fish meal was added in the fish meal group. The diets of other four groups contained 3.5% feather meal from four domestic feather meal processing plants of A, B, C, and D, respectively. Body weight, feed intake and feed efficiency at 3, 5, and 7 weeks of age were measured. The results showed that there was a trend of higher feed intake in the control and fish meal groups compared with the feather meal groups at 3 to 5 weeks of age. The feed efficiency between 3 to 7 weeks of age in the control and fish meal was lower than that in the feather meal groups (P＜0.05). Body weight gain was similar among groups at 3-7 weeks of age. The amino acid digestibility of domestic feather meal from different processing plants was between 82.2-84.4%. In conclusion, addition of 3.5% domestic feather meal in the practical feed of mule ducks was recommended.

並列關鍵字

Mule duck ； Feather meal ； Amino acid digestibility

主題瀏覽