Effects of Fish Meal Replacement with Fermented Feather Meal on Growth, Health Status and Nutrient Digestibility of Grouper (Epinephelus coioides)

飼料中發酵羽毛粉取代魚粉對點帶石斑成長、健康狀態及營養素消化率之影響

李艶君(Yen-Chun Lee) ； 余碧(Bi Yu) ； 林鈺鴻(Yu-Hung Lin)

《臺灣水產學會刊》 44卷4期 (2017/12) Pp. 267-275

https://doi.org/10.29822/JFST.201712_44(4).0006

摘要

The present study evaluated the effects of fish meal replacement by fermented feather meal (FFM) on growth, health status and nutrient digestibility of grouper (Epinephelus coioides). Fish meal protein was replaced by FFM at 0, 5, 10, 20 and 30% in the basal diet. Total of five experimental diets were each fed to triplicate groups of juvenile grouper (initial weight: 3.24 ± 0.03 g) in a closed recirculating system with seawater for 8 weeks. Grouper fed diets with 0-10% fish meal protein replacement by FFM had significantly higher (P＜0.05) weight gain percentage, feed efficiency, protein retention and protein efficiency ratio than fish fed the 20 and 30% replacement groups. The parameters for health status of grouper, including hematology, plasma lysozyme activity, immunoglobulin concentration and hepatic oxidative status, showed no significant difference among all dietary treatments. Apparent dry matter digestibility was the highest in fish fed 0 and 5% replacement diets, followed by fish fed 10 and 20% replacement diets, and the lowest in fish fed the 30% replacement diet. Fish fed 0 and 5% replacement diets had the highest protein digestibility, followed by fish fed the 10% replacement diet, then fish fed the 20% replacement diet, and the lowest in fish fed the 30% replacement diet. Lipid digestibility of fish fed 0-10% replacement diets was higher than that of fish fed 20 and 30% replacement diets. Results indicated that the FFM can be used to replace fish meal protein up to 10% without any negative effects on growth and health status for grouper.

關鍵字

grouper ； fish meal ； fermented feather meal ； alternative protein source

並列摘要

本實驗旨在探討發酵羽毛粉替代魚粉對點帶石斑（Epinephelus coioides）成長、健康狀態及營養素消化率之影響。基礎飼料中之魚粉蛋白量分別由發酵羽毛粉取代0%、5%、10%、20%及30%，共計5組實驗飼料，每組三重複，分別餵予初重3.24 ± 0.03 g 之石斑魚稚魚，於海水循環系統中飼養八週。石斑魚餵食發酵羽毛粉取代魚粉蛋白量0%-10%三組之增重率、飼料轉換率、蛋白質保留率及蛋白質效率均優於（P＜0.05）20%及30%取代組。健康狀態指標如血液生化分析、溶菌酶活性、免疫球蛋白濃度及肝臟氧化狀態於各組間均無顯著差異。石斑魚之乾物消化率以餵食0%及5%取代組最佳，其次為10%及20%兩組，30%取代組則為最低。蛋白消化率以餵食0%及5%取代組最高，10%取代組次之，20%取代組再次之，以30%組為最低。脂質消化率以0%-10%三組高於20%及30%為最低。實驗結果顯示發酵羽毛粉可取代石斑魚飼料中10%魚粉蛋白而不影響其成長與健康狀態。

並列關鍵字

石斑魚 ； 魚粉 ； 發酵羽毛粉 ； 蛋白替代性原料