飼糧粗蛋白質與代謝能含量對8至12週齡白羅曼肉鵝生長表現的影響

Effects of dietary crude protein and metabolizable energy levels on the growth performance of White Roman Geese between 8 and 12 weeks of age

王錦盟(Chin-Meng Wang) ； 胡見龍(Chien-Lung Hu) ； 張雁智(Yen-Chih Chang)

《畜產研究》 53卷1期 (2020/03) Pp. 9-15

https://doi.org/10.6991/JTLR.202003_53(1).0002

摘要

一般而言，肉鵝的生產可分為二階段的飼養模式，即0－4週齡與4週齡以後。白羅曼鵝8週齡體重可以達到上市體重的80－90%，這意味著8週齡之前和之後肉鵝營養需求可能不同。本試驗使用192隻8週齡白羅曼鵝為試驗動物，以8－12週齡為試驗期，採任飼，不限給水，以評估飼糧不同粗蛋白質（Crude protein, CP）與代謝能（Metabolizable energy, ME）含量對鵝隻生長表現的影響。試驗採2×3複因子設計，即二種CP含量（13及15%）與三種ME含量（2,300、2,500及2,700 kcal／kg）。結果顯示，試驗使用兩種CP含量飼糧對8－12週齡鵝隻的採食量、體增重與飼料轉換率均無顯著影響。在ME方面，飼糧ME含量顯著影響8－12週齡鵝隻採食量（P＜0.05），鵝隻採食量隨著ME的增加而減少，但在增重與飼料轉換率方面則無顯著影響。試驗結果發現，在任飼條件下，8－12週齡白羅曼鵝給飼CP13 %及ME2, 300 kcal／kg飼糧即可獲得良好的生長表現。在生產成本方面，提高飼料代謝能可以降低鵝隻8－12週齡體增重的飼料成本，惟各組鵝隻增重的飼料成本均高達72元／kg以上。

關鍵字

白羅曼鵝 ； 粗蛋白質 ； 代謝能 ； 肥育期

並列摘要

For goose production, two stage feeding model, 0-4 and 5-12 weeks of age, were recommended. The body weight of White Roman goose at 8 weeks of age can reach 80-90% of market boy weight. The nutritional requirements of meat goose may be different before and after 8 weeks of age. A total of 192 White Roman geese, 8 weeks of age, were used in this study. Feeding trial during 8-12 weeks of age was used to evaluate the effects of dietary crude protein (CP) and metabolizable energy (ME) on the growth performance of goose. The 2 × 3 factorial experiment was used i.e., two crude protein levels (13 and 15%) and three metabolizable energy levels (2,300, 2,500 and 2,700 kcal/kg). The results showed that the levels of dietary CP had no significant effect on feed intake, body weight gain and feed conversion rate for the geese between 8 and 12 weeks of age. Nevertheless, the effect of dietary ME significantly (P ＜ 0.05) affected the feed intake of the geese, but had no effect on body weight gain and feed conversion rate. The feed intake was decreased by the increase of dietary ME intake. In conclusion, White Roman geese providing CP 13% and ME 2,300 kcal/kg diet ad libitum can obtain a good growth performance. As for production cost, the increase in the feed ME reduces the feed cost of the goose between 8 and 12 weeks of age, but the feed cost of each group was all higher than NT$72 /kg.

並列關鍵字

White Roman goose ； Crude protein ； Metabolizable energy ； Finisher period