A feeding trial was conducted to evaluate the potential of dietary supplementation of autolysed brewer's yeast (AY) on African catfish. The catfish (22.5 ± 1.15 g/fish, 20 fish 33 L/tank) were fed with either of diets (390 g/kg crude protein, 140 g/kg lipid) supplemented with 0, 3, 6 or 10 g/kg AY (n = 3). After 49 days of feeding, the final body weight and metabolic growth rate of the catfish fed 3 g/kg AY (3‐AY) diet were higher than those fed the control diet (p .05) in intestinal perimeter ratio. However, an elevated (p < .05) abundance of goblet cells and intraepithelial leucocytes were found in the intestine of catfish fed 3, 6 and 10 g/kg AY diets, with the highest level of abundance recorded in the mid‐intestine of the catfish fed 3‐AY diet. The results suggest that dietary 3 g/kg autolysed brewer's yeast supplementation improves growth performance of African catfish without deleterious effect on liver functionality and gut morphology.

中文翻译：

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自溶酵母的膳食补充剂可促进非洲鲶鱼的生长、肝脏功能和肠道形态

进行了一项饲养试验，以评估在非洲鲶鱼上添加自溶啤酒酵母 (AY) 的膳食补充剂的潜力。鲶鱼（22.5 ± 1.15 克/条鱼，20 条鱼 33 升/箱）喂食任何一种饲料（390 克/千克粗蛋白，140 克/千克脂质），并添加 0、3、6 或 10 克/千克 AY (n = 3)。饲喂 49 天后，饲喂 3 g/kg AY (3-AY) 日粮的鲶鱼的最终体重和代谢增长率在肠道周长比方面高于饲喂对照日粮的鲶鱼 (p = .05)。然而，在饲喂 3、6 和 10 g/kg AY 日粮的鲶鱼的肠道中发现杯状细胞和上皮内白细胞的丰度升高（p < .05），最高水平的丰度记录在鱼的中肠。鲶鱼喂食 3-AY 饮食。结果表明，日粮 3 g/kg 自溶啤酒