Solving fish seedlings bait good methods common fish fry opening bait

Solving fish seedlings bait good methods common fish fry opening bait

Directly increasing rotor worms in the pond is an effective way to solve the bait of fish seedlings, reduce production costs, and improve the survival rate of fish seedlings.

The rollerworm in the drainage and clear ponds rely on the dormant eggs in the bottom mud to re -germinate.According to determination, in the bottom mud of fish farming ponds, there are more than 10 million rotor eggs per cubic meter per cubic meter. They are "seeds" of wheelglin breeding the following year.The drainage can increase the heat of the dormant eggs in the bottom mud. The Qingtang can remove the enemy's enemy damage and replace the new water itself a benign stimulus.

Tests related to Organic fertilizer show that every 667 Square meters of ponds invest about 26 kg of cow dung or human feces urine to meet the food needs of wheel worms.

Soon after the control of the enemy's pond wheel worms, the water flea also started, because both used bacteria, crumbs and algae as the food, and the filtering ability of the water flea was stronger than that of the wheel worm.Worms are suppressed due to lack of food.Kill the flea with appropriate potions and retain the wheels.

When the new water is applied to the environmental conditions, the wheel worm breeds very quickly. It is 1-2 days after the peak, and hypoxia is prone to occur. Therefore, new water should be added.

In order to ensure the survival rate of fry, in the early stages of breeding, it is often necessary to provide palatable, rich, and nutritious open bait.At present, several commonly used bait in the cultivation of seedlings are egg yolk, soy milk, wheels, algae and aquatic micro -ecological preparations.

1. Egg yolk

Egg yolk is a commonly used fish -opening bait. In the production, the egg yolk can be filtered by 80 measuring silk to make the egg yolk particles smaller, so that it is evenly distributed in the water in the water, which can keep the suspended time around 1h.The amount of bait is within the appropriate range, and the egg yolk can be eaten by the fry better.However, it should be noted that this kind of bait is easily settled and lost, and the water quality is easily corrupted after entering the water, resulting in the slow growth of the fry and the low survival rate.

2. Soymilk

Soy milk is rich in protein and can meet the nutritional needs of fish fry, but soy milk has low nutritional value, is not easy to digest and absorbs, and it is easy to form suspension in water, affecting soluble oxygen, and easily fermented.Promote the rapid reproduction and growth of floats in water bodies, and indirectly provide bait for fish fry.

Three, wheel worms

The size of the wheel worm is 166 m* 230 m. It has good palatability, the highest crude protein content, and the crude fat content is second only to egg yolk, and contains unsaturated fatty acids necessary for a large amount of fish fry, with high nutritional value.The swimming speed is less than 0.02cm / s, and the distribution in the water layer is relatively uniform.Wheels can grow and reproduce in the seedling water body, which not only maintains the stability of its nutrients, but also contaminates the water quality of seedlings.In addition, the research of wheel worm cultivation methods is very rich, and the cultivation technology is relatively mature, which can ensure that the wheel worms have sufficient sources. Therefore, wheelglintes are effective ways to solve the bait of fish seedlings, reduce production costs, improve the survival rate of fish seedlings and quality.

Four, algae

Algae individuals are smaller than wheel worms, and are suitable for use in the early days of the fry opening.With the growth of the fry, the split mouth widen, and wheel worms have become its most suitable bait.The two can complement each other.

5. Aquatic micro -ecological preparation

Aquatic micro -ecological preparations are small, non -toxic side effects, non -pollution and residues, can effectively improve the ecological environment of the breeding, improve immune capacity, inhibit pathogenic microorganisms, and greatly increase the growth rate and survival rate of fish fry.For example, optical bacteria are a nutrient -rich and highly nutritious bacteria. The bacteria are rich in amino acids, folic acid, B vitamins, especially vitamin B12 and biotin content, and physiological activated substance q Q.The volume is 1/20 of the small ball algae. When the organs such as fishes, shrimp, shellfish and other digestive systems that are just hatched are not fully differentiated, optical bacteria can be sucked into the body through gills, so that the fishes have not been completely absorbed in the yolk sac that have not been completely absorbed completelyAt the same time, you can take the bait from the outside to make up for the lack of endogenous nutrition.