Method for feeding rare earth-supplemented feed to broodstock and adult fish

Adding some rare earth in proportion to the bait fed to broodstock and adult fish can not only improve feed utilization, but also promote fish growth, enhance disease resistance, play a role in preventing and treating diseases, reduce fish deaths, and increase economic benefits.

The preparation method for feeding broodstock is: use 40-50 grams of rare earth or 1 packet of rare earth additive, first dissolve it with a little vinegar or acid water, then add 0.5 kg of water, and evenly spray it onto 60 kg of concentrated feed with a sprayer, stirring while spraying. If conditions permit, it can be made into extruded feed for feeding, and the effect is even better.

For feeding adult fish, use rare earth at a concentration of 300 ppm. About 10 days before cutting green grass, spray it evenly onto the green grass, with a usual dosage of 50 kg per mu. This can increase fresh grass yield by 7%-9%, and at the same time can reduce the loss of rare earth due to dissolution in water. Alternatively, on the day of cutting grass, use 2 packets of fish-use rare earth additive per mu, spray it onto the green grass, and after the water dries, it can be cut and fed. It is also possible to first cut the green grass, let it dry in the sun for a while, then use 40 grams of rare earth plus 1 packet of fish-use rare earth additive, add 20 kg of water, spray it onto 300-400 kg of green feed, and feed it immediately.

Precautions: choose a sunny day for feeding; feeding is not suitable on rainy days. Feed between 5-7 p.m., because this period is the peak feeding time for the fish school. First improve the water quality, then feed the fish. If the water quality is good, feed immediately; if the water is turbid and has a foul odor, replace it with fresh water before feeding. For a disinfected fish pond, before the fry are put into the pond, use 150 grams of rare earth or 3 packets of rare earth additive per mu, plus 250 grams of table salt, add 50 kg of water, prepare a rare earth solution, sprinkle it into the pond, and release the fry after five minutes; the effect is relatively good.