Method for artificially hatching fertilized eggs of micropterus salmoides
A technology of artificial hatching and fertilized eggs, which is applied in the direction of climate change adaptation, application, fish farming, etc., can solve the problems that are not suitable for large-scale promotion, prone to water mold, and long incubation time, so as to achieve rapid growth of perch breeding area, The effect of increasing hatching rate and increasing economic income
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[0017] Embodiment: a kind of method for California perch fertilized egg artificial hatching, adopt following steps: A. California perch male parent, female parent are placed in the same pond after artificial injection of oxytocin, described California perch male parent, female parent (total) stocking density Don't be too big, 3000-4000 tails per mu is appropriate. The area of the pond is greater than or equal to three mu, and the ratio of male to female is 4:6. The water quality is purified irregularly by using filter membrane water treatment equipment (available in the market), and high-quality water is supplied, and the submersible pump is used to pump water to create water flow. The dissolved oxygen is sufficient. Check the water quality daily, keep the pH at 7.0-7.5, ammonia nitrogen <0.4mg / l, nitrite content <0.3mg / l, and feed compound feed. The compound feed can be: California perch puffed compound pellet feed, protein content 43% Add 2-3 grams / kg of epimedium powder, ...
experiment example
[0021] Experimental example: Choose a pond with a breeding area of 5-8 mu and a water level of more than 2 meters. The pond can hold water best. First, do a good job of dredging. Use 1-3g / m3 for each breeding pond 3 Bleaching powder or 0.6-0.8g / m 3 Chlorine dioxide is sprayed and disinfected 2-3 times in the whole pool, and the stocking density is about 3500 tails / mu. According to the method of the invention, through tests, the invention can effectively control the growth of saprolegnia in the hatching process of the California perch fertilized eggs, improve the hatching rate, and the hatching rate can reach more than 73%. Simultaneously, the survival rate of California perch can reach more than 70% by the method of the present invention.
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