This study investigated the effects of cow blood meal (CBM) and donkey blood meal (DBM) supplemented diets on growth and digestive enzymes activity in juvenile Clarias gariepinus. Boiled blood meals (CBM and DBM) were used to substitute fishmeal at 7%, 17%, 25%, and 33% percentage inclusion levels, respectively. A total of 450 juvenile C. gariepinus (8.48 ± 0.09 g) were randomized to nine experimental diets coded as CBD1(7%), CBD2(17%), CBD3(25%), CBD4(33%), DBD1(7%), DBD2(17%), DBD3(25%), DBD4(33%), indicating Cow Blood Diet (CBD) and Donkey Blood Diet (DBD) respectively and CT (control). Analysis from this study reveals that the protein and energy contents of boiled DBM significantly superseded that of boiled CBM. Comparative assessment based on growth biometrics of fish showed that the fish cohort fed CBD1 (7%) performed best. This was followed by the group fed DBD1 (7%) and then the control. Diets formulated with CBM and DBM, respectively, having a percentage inclusion greater than 7% undermined the growth of Clarias gariepinus juvenile without any effect on digestive enzyme secretion.

中文翻译：

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食用鱼粉代替驴肉和牛血粉对猪鞭草生长性能和消化酶活性的评估

这项研究调查了牛血粉（CBM）和驴血粉（DBM）补充饮食对少年Clarias gariepinus生长和消化酶活性的影响。煮沸的血粉（CBM和DBM）分别以7％，17％，25％和33％的夹杂物含量代替鱼粉。总共有450个少年梭状芽胞杆菌（8.48±0.09 g）被随机分为9种实验饮食，分别为CBD1（7％），CBD2（17％），CBD3（25％），CBD4（33％），DBD1（7％），DBD2（17％）， DBD3（25％），DBD4（33％），分别表示牛血饮食（CBD）和驴血饮食（DBD）和CT（对照）。这项研究的分析表明，煮沸的DBM的蛋白质和能量含量大大超过了煮沸的CBM的蛋白质和能量含量。根据鱼的生长生物特征进行的比较评估表明，喂食CBD1的鱼群（7％）表现最佳。其次是组饲喂DBD1（7％），然后是对照组。分别用CBM和DBM配制的日粮，其夹杂物百分含量大于7％，会破坏小Cl鱼的生长，而对消化酶的分泌没有任何影响。