Detailed Explanation of Fish Nutritional Requirements and Formulation Key Points

1. Nutritional requirements of farmed fish:

The optimal requirement levels of major components such as protein, fat, and carbohydrates in fish feed vary depending on technical factors such as fish species, feeding habits, different growth stages, water temperature, water quality, and feeding methods.

2. Formula for compound fish feed:

Several major fish feed formulas are introduced below for readers' reference.

(1) Compound feed for black carp: fish meal 35%, soybean cake 47.5%, barley 15%, yeast 1%, minerals 1.5%, plus added multivitamins, feed conversion ratio 2.26.

(2) Compound feed formula for grass carp and blunt snout bream: fish meal 5%, soybean cake 33%, wheat bran 26%, starch residue 12%, pine needle powder 7%, minerals 2%, oil residue 1%, crude protein content 25%, feed conversion ratio 2.1.

(3) Compound feed formula for common carp: mussel powder 5%, Peruvian fish meal 30%, soybean cake 15%, bran 40%, barley 10%, multivitamins and minerals 1-2%, crude protein 28-36%, feed conversion ratio 1.83--1.92.

(4) Compound feed formula for tilapia: wheat bran 30%, soybean cake 35%, fish meal 15%, corn meal 5%, sophora leaf powder 5%, barley 8.5%, auxin 1%, salt 0.5%, crude protein content 34.6%, feed conversion ratio 2.03.

(5) @#@240@#@ compound feed formula: fish meal 50%, peanut cake 25%, @#@245@#@ powder 12%, bran 5%, fish oil 5%, vitamins 1%, minerals 3%.