Rhubarb board mud culture

1. Selection and cultivation of intimacy As a breeding carp, it is required to have a strong constitution and be active and playful. Body color is rough black mud, yellow brown or black flowers, green brown is better. Intimate sources use less wounds to be caught on that day.
Scutellaria baicalensis has sexual transformation characteristics. 1 Astragalus membranaceus is basically female in winter and 2 winter, and the male ratio is gradually increased after spawning in 2 winters. It is basically a male body until 6 winters. In non-spawning seasons, it is difficult to identify males and females. Generally body length and weight are the norm. The general body length is 37-50 cm and the body weight is 75-200 g. Male to female breeding ratio is preferably 2 to 3:1. During the spawning season, females have enlarged and soft abdomen on the abdomen, and some clear zona pellucidas are visible on the abdomen. Egg outlines are visible in vitro, and the genital pores are red and swollen before spawning.
Intimate stocking density: 7 females per square meter of water, 2 to 3 males, about 3 square meters of pro-cultivation pool, 25 cm water depth, plenty of irregular cave walls, planted water in the pond, etc. Creatures (about 1/4 of the pond area) are used by the eel to avoid light and covert. The feed is mainly live quail, fly larvae, clam meat or snail meat. The clams and larvae are removed from clam meat and snail meat. The daily feed amount is 2.5% to 8% of the fish body weight, and they are fed once in the evening. . Management should remove the residual bait in time and add new water.
2. Carp Breeding and Seed Breeding Astragalus membranaceus can be propagated from May to September, with the peak of breeding from June to August. After intimacy with the group into the pool, should strengthen the cultivation and promote gonad development. The breeding and spawning of Astragalus are carried out in caves, but they can also happen accidentally in the crevices near the water surface and in the fibrous roots of aquatic plants. Generally guard to the seedlings out of the film, a large number of spit bubbles in the vicinity of the cave when spawning Astragalus, fertilized eggs hatched after 1 week and transferred to nursery ponds. The body length of the seedlings is only 1.1 to 1.2 cm when they are out of the membrane, and the yolk sac is the nutrient on the side of the lateral pool. 5 days after the film was started, the egg yolk was fed (screened with 50 mesh). After 3 days, the rotifers were fed. After 1 week, the silkworms were fed with water and water fleas. After 10 days, the fish larvae were fed and the body length was as long as 20 to 25 days after emergence. 5 cm, began to vote artificial diet, and feeding mash, 2 months after the body up to 7 cm, can be divided into pool feeding, emergence by 120 days of breeding, body length up to 8 to 13 cm. There should be a certain silt layer at the bottom of the nursery. If there is no microfluidic condition, change the water every 2 to 4 times. Change the water every time by 1/3 to 1/2. When changing the water, the temperature difference between the two points should not exceed 3°C.

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