A 7-week feeding trial was conducted to investigate the effect of two protein hydrolysates: fish hydrolysate (FH) and shrimp hydrolysate (SH) as feed supplement on growth performance and feed utilization of juvenile striped catfish, Pangasius hypophthalmus. Three isonitrogenous (32% crude protein) and isolipidic (12% crude lipid) experimental diets were formulated: diet 1, control (no supplementation of protein hydrolysates); diet 2, supplemented with 2% FH; and diet 3, supplemented with 2% SH. Each of the diets was fed to triplicate groups of 15 juveniles (initial mean weight of 6.99 g) twice a day until apparent satiation. The results showed that both FH and SH diets exerted positive impact on the growth and feed conversion ratio (FCR) of fish, but the improvement was more pronounced in the former as fish fed with FH diet showed significantly higher (P<0.05) specific growth rate (2.20% day⁻¹), weight gain (193.68%), and better FCR (1.23) compared to those fed with control, yet no significant difference was recorded for these metrics between the control and SH group. Besides, fish fed with SH diet had significantly higher hepatosomatic index than those fed with control, and its viscerosomatic index was the highest among all treatment groups. The present study suggested that FH is a potential feed supplement for enhancing feed utilization and growth performance of juvenile striped catfish.

7周饲养试验以调查两个蛋白质水解物的效果：关于少年条纹鲶鱼的生长性能和饲料利用鱼水解物（FH）和虾水解产物（SH）作为饲料补充物，鲶hypophthalmus. 配制了三种异氮（32% 粗蛋白）和异脂（12% 粗脂）实验日粮：日粮 1，对照（不补充蛋白质水解物）；饮食 2，补充 2% FH；和饮食 3，补充 2% SH。每天两次将每种饮食喂给三组一式三份的 15 只幼鱼（初始平均体重为 6.99 克），直至明显饱食。结果表明，FH 和 SH 日粮对鱼的生长和饲料转化率 (FCR) 均产生积极影响，但前者的改善更为明显，因为 FH 日粮的鱼表现出显着更高的比生长( P <0.05)率（2.20% 天^-1)、体重增加 (193.68%) 和与对照组相比更好的 FCR (1.23)，但对照组和 SH 组之间的这些指标没有记录到显着差异。此外，SH饲料喂养的鱼肝体指数显着高于对照组，其内脏指数在所有治疗组中最高。本研究表明，FH 是一种潜在的饲料添加剂，可提高条纹鲶鱼幼鱼的饲料利用率和生长性能。