ORGANIC ACID SALTS, A PROTEASE CMOPLEX AND THEIR COMBINATION AFFECT PERFORMANCE OF COMMON CARP Cyprinus carpio FED MEAT-BONE MEAL BASED DIETS

Shi Ze, Xiaoqin Li, Xiaoqin Zhang, Jianan Chen, Xiangjun Leng and M A Kabir Chowdhury*
 
Jefo Nutrition Inc.
5020 Jefo Avenue, Saint-Hyacinthe
Quebec, J2S 7B6
Canada
kchowdhury@jefo.ca
 

A nine-week trial was conducted at the Shanghai Ocean University of China to assess the effects of organic acid salts (OAB), a protease complex (PR) and their combination (OAB+PR) on growth performance, body indices and serum biochemical indices of common carp Cyprinus carpio. The trial consisted of five dietary treatments: positive control (PC, 6% fish meal - FM), negative control diet (NC, where FM was substituted with meat and bone meal - MBM), and three other NC diets, supplemented with OAB, PR, OAB+PR.

Weight gain (WG, %), feed conversion ratio (FCR) and protein efficiency ratio (PER) between animals fed PC (299±2.3, 1.73±0.03, 1.89±0.03, respectively) and NC (215±4.1, 1.90±0.04, 1.74±0.04, respectively) diets was observed. However, no differences in these parameters were observed in animals fed the PC diets with those fed the OAB, PR and OAB+PR diets.

There were no differences in condition factor, hepato-somatic indices, visecro somatic indices and whole body chemical composition of animals fed the treatment diets except for the body phosphorus content (0.65%) in animals fed the OAB+PR diets, the among the treatments. Among the serum biochemical indices, only total anti oxidative capacity (T-AOC) and malondialdehyde (MDA) content OAB and OAB+PR diets were significantly better than the other diets.

It can be concluded from this study that the blend of organic acid salt and their combination with the dietary protease complex can improve performance of common carp when fish meal is completely replaced with meat-bone meal.