Fish add additive
Adding certain additives to fish feed can greatly enhance aquaculture efficiency. For example, incorporating 80–100 grams of rare earth elements per kilogram of carp feed can boost daily weight gain by 10–15% and improve disease resistance. Betaine, when added at 1.5–2.5% in the diet, acts as an effective attractant, encouraging fish to eat more and reducing feed waste that sinks to the pond bottom.
Including 6–8% animal or plant oils and fats in fish fry diets can increase growth rates by up to 20% while significantly lowering mortality. Magnesium acetate, when added at 0.5 grams per kilogram of feed, can enhance fish growth, with a 2% daily weight gain—over 30% higher than fish without this supplement.
Borax, used at 2 grams per 100 kilograms of feed for carp and grass carp, has been shown to increase production by 20%, reduce feed consumption by 25%, and help prevent diseases. In tilapia diets, replacing some fish meal with vermicompost can cut costs by 40% and boost production by 35%.
Vitamin E, when added to tilapia feed at 40–70 mg per kilogram, improves daily weight gain by over 10% and increases feed conversion efficiency by 8%. For salmon, adding 60 grams of vitamin C per kilogram of feed can increase daily weight gain by 50% and save feed by 29%. Even lower concentrations, such as 700 mg/kg and 500 mg/kg, have proven to be highly beneficial. These additives not only support better growth but also contribute to healthier fish and more sustainable aquaculture practices.
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