1. earthworm. Fresh oysters contain 40% protein, various amino acids, and can emit a special odor that can strongly stimulate the appetite of fish. According to the experiment, tilapia fed with a compound feed containing 1.14% of wolfberry increased the yield by 22.4% compared to the control group fed with the common feed and saved 38.5% of the concentrate feed. 2. fat. According to experiments, 4% to 8% fat-fed fish fry were added to the semi-sperm containing 30% to 32% of protein, and the fry growth rate was 30% faster than the control group, and the death string was reduced by 18%. 3. Leaves. The leaves contain protein, fat, vitamins, minerals and various essential amino acids. After testing, adding 0.5% of the leaves to the feed can increase the weight-increasing string of the first-instar carp of fish ponds by 15.4% to 22.4%, and the growth rate of Tongtang and carp has also been significantly improved. Fire Extinguisher,Domestic Fire Extinguisher,Electrical Fire Extinguisher,Arine Fire Extinguisher DONGGUAN TENYU TECH.INC , https://www.tenyutech.com