Replacement of Fish Meal with Mixed Rendered Animal Protein in Practical Diets for Siberian Sturgeon (Acipense baeri Brandt)

Xue Min¹ Wu Xiufeng¹ Guo Liya¹ Wang Juhua² Luo Lin ¹, Yu Yu^3*

1.      Feed Research Institute, the Chinese Academy of Agricultural Sciences, 100081, Beijing;

2.      Beijing Enhalor Biotechology Co. Ltd.

3.      National Renderers Assocciation, Int.

ABSTRCT

The effect of mixed territorial animal protein (MP, including meat & bone meal, MBM: 40%; poultry by-product meal, PBM: 40%; hydrolyzed feather meal, HFM: 20%) as a partial replacement of fishmeal (FM) was studied in juvenile Siberia sturgeon (Acipense baeri Brandt) in an eight-week growth trial. Seven diets were prepared and four replicates for each treatment were designed. Zero, 25% and 50% of FM protein were replaced by 0, 124.5 and 249.0 g kg^-1 MP, respectively, and 3 treatments (unbalanced, amino acid balance with crystallized Lys. Met. and Thr. (A) or blood meal (B) as control) and named as MP0, MP25, MP25A, MP25B, MP50, MP50A, MP50B, respectively.

Specific growth rate (SGR) of MP50A group was significantly higher than that of MP0, and other MP using diets neither show adversely effect on growth performance. Fish fed with diet MP25B, which replace 25% of fishmeal protein and balanced limiting amino acid withh blood meal had significantly (P<0.05) lower feed conversion rate (FCR) than fish fed with diets MP0, MP25, MP50 and MP50A. Alanine aminotransferase (ALT), aspartate aminotransferase (AST) and total protein (TP) in blood serum of MP25B group were lowest. There were no significantly differences in blood serum cholesterol (CHO) among groups. It is showed that MP can be utilized in the juvenile Siberia sturgeon up to 249.0 g kg-1, to replace 50% of fishmeal protein in this experiment.