1. Rare Earth: In the feed for carp and other fish, adding 80-100 grams per kilogram can increase daily weight gain by 10%-15% and improve disease resistance. This supplement is particularly effective in enhancing the overall health of the fish, leading to better growth performance and reduced losses due to illness.
2. Betaine: Incorporating 1.5% to 2.5% betaine into the feed acts as a natural attractant, encouraging fish to consume the feed more effectively. This helps reduce waste, especially in ponds where uneaten feed tends to sink to the bottom, causing water pollution and inefficiency.
3. Oil: Adding 6% to 8% of animal or vegetable oils to the feed can significantly boost the growth rate of fry, increasing it by up to 20%. It also helps lower mortality rates, making it a valuable addition for fish farmers looking to maximize production.
4. Magnesium Acetate: Including 0.5 grams of magnesium acetate per kilogram of fish feed can enhance growth performance, with daily gains reaching up to 2%. Compared to fish without this supplement, the growth rate increases by over 30%, showing its effectiveness in promoting faster development.
5. Borax: When added to the feed of carp and grass carp at a rate of 2 grams per 100 kilograms, borax (a traditional Chinese medicine) can increase yield by 20%, reduce feed consumption by 25%, and help prevent common fish diseases. This makes it a cost-effective and beneficial additive in aquaculture.
6. Earthworms: Replacing part of the fish meal in tilapia feed with earthworms can reduce fish meal usage by 40% during the growing period. This not only lowers costs but also increases yield by 35%, offering an eco-friendly and sustainable alternative.
7. Vitamin C: Adding 60 grams of vitamin C per kilogram of squid feed can boost daily weight gain by 50% and save 29% in feed. Additionally, using 700 mg of vitamin C per kilogram of squid feed has shown significant improvements in fish health and growth efficiency.
8. Vitamin E: Including vitamin E in tilapia feed at a concentration of 40-70 mg per kilogram can improve daily weight gain by over 10% and enhance feed conversion by 8%. This makes it a vital nutrient for supporting optimal fish growth and overall well-being.
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