80:20 model for breeding grass carp with soybean meal-based feed

Soybean meal is the main protein source, with a balanced mix of other natural plant products to meet the specific amino acid and other nutritional needs of farmed fish. The core of 80:20 technology is the management of water quality, feed quality and fish quality, thereby optimizing breeding output and food safety while minimizing the impact on the environment. 3mouth80∶20pond stocked with grass carp 350tails/mu(5250tails70 grams and 98 grams respectively. The grass carp in these 80:20 ponds were fed 32/3 grass carp feed from the American Soybean Association International Project (Table 3 polyculture pond is stocked with 2 species of grass carp of different sizes, as well as crucian carp, silver carp and silver carp. The stocking specification of crucian carp is 100g/ tail, and the stocking density is 100 tail/mu(1500tail