Growth and digestive enzymes of silver catfish fed diets containing fruit residue

ABSTRACT In fish farming, the use of alternative ingredients has been studied, so that alternative sources can be used to minimize feed costs. This study evaluated the incorporation of grape, orange, guava, and fig residues in diets for silver catfish and its effects on growth, digestive enzymes and body composition. A total of 180 fish (initial mean weight = 22.93±0.75 g) were reared in a recirculation aquaculture system. There was no difference (P>0.05) in the parameters of growth, dry matter, mineral matter, plasma protein, cholesterol, triglycerides, lipase, and trypsin of fish. Glucose levels were higher in fish fed diets containing fig, orange, and grape residue (P

摘要：水产养殖领域已针对替代饲料原料的应用开展相关研究，以期通过替代源降低饲料生产成本。本研究探究了葡萄、橙、番石榴及无花果残渣在银鲶日粮中的添加应用，并分析其对试验鱼生长性能、消化酶活性与体成分的影响。试验共选用180尾初始平均体重为22.93±0.75 g的银鲶，于循环水养殖系统（recirculation aquaculture system）中进行饲养。试验鱼的生长指标、干物质含量、矿物质含量、血浆蛋白水平、胆固醇、甘油三酯、脂肪酶及胰蛋白酶活性均无显著差异（P>0.05）。饲喂添加无花果、橙、葡萄残渣日粮的试验鱼，其血糖水平更高（P