Crayfish breeding and breeding points

Breeding broodstock selection can choose broodstock from September to October of last year or from March to April of the same year. It should be selected from 10 months of age, weight 30g to 50g, with complete appendages, strong physique, no disease and no Injuries, smooth bodies, and individuals with strong mobility, male to female ratio of 2:1 or 1:1. The male and female crawfish are distinctive in appearance and easily distinguishable. In the mature Procambarus clarkii, the male individuals of the same age shrimp were significantly larger than the female individuals; 2 The shrimps with similar body length, the male chewing feet were thick, and there was a bright red soft palate on both sides of the chelipa, and the female chelate paw was relatively Small, no soft fleas on the chelipeds, even if the color is also light; 3 male genital hole opening in the foot base of the 5th step, the female reproductive hole is open in the foot base of the 3rd step; 4 sexually mature female The abdomen expands and the male stomach is relatively narrow.
Broodstock broodstock rearing tanks generally use earthen ponds, depending on the size of the area may be. Small-scale production of its area from a few square meters to tens of square meters can be; large-scale production is generally more than 80 square meters, the highest up to 2000 square meters. The water depth is 0.5 meters to 1 meter, and the pool width is 1.5 meters or more. Built into the drainage system, around the pool pool with plastic film or calcium plastic board to build escape prevention wall. There must be adequate water supply, clean water without pollution, and high dissolved oxygen, especially the requirement for dissolved oxygen in water during intensive cultivation is above 4 mg/l. Several small ditches were excavated in the pool to facilitate the operation of shrimp collection. Fifteen days before replenishment, broodstock should be disinfected with evaporating water of 150kg of quicklime per 667m2, and 500kg to 800kg of decomposed livestock and poultry manure should be applied. Then, new water is filtered and injected into the pool for concealed objects such as branches, roots, bamboo tubes, etc., and some plants are transplanted. The area of ​​aquatic plants accounts for about 1/3 of the area of ​​the cultivation pool. The broodstock stocking density should be appropriate, usually from September to October, the selected broodstock stocked from 100 kg to 150 kg per 667 square meters; from March to April, the selected broodstock is stocked at 80 kg to 100 kg per 667 square meters. Before the stocking, soak the shrimp body with 3% saline for 10 minutes to kill the pathogen. During the cultivation, we must strengthen the feeding of feed, feed fresh water grass, bean cake, wheat bran or compound feed, and add a part of animal feed, such as chopped snail meat, livestock and poultry slaughtered leftovers. Daily feeding amount: 2%~3% of broiler weight in March, 4%~5% in April, 6%~8% in May, feeding 1 time each morning and evening, mainly in the evening , accounting for 70% of the daily feeding amount. At the same time strengthen water quality management, generally change the water once every 10 days to 15 days, each time changing the pool water 1/3; every 20 days per cubic meter of water with quicklime 20 grams to 25 grams of water Quanchiposa 1, in order to promote Broiler gonadal development.
Breeding and hatching April to May, when the water temperature is above 18°C, broodstock begin to mate. The males were discharged into the seminal vesicles of the females. The fertilized eggs hatched on the hairs of the female's abdominal appendages' swimming feet. The incubation temperature was 22°C~28°C. When the water temperature is 18°C~20°C, the incubation period is 30 days to 40 days. When the water temperature is 25°C, it only takes 15 days to 20 days. After juvenile hatching, the growth and development of juveniles are completed under maternal protection. When young shrimp leave the mother, they can take food and live independently. When a large number of juvenile shrimps are found in breeding ponds, they should be picked in time.
Shrimp cultivation seedling pond area with 20 square meters to 40 square meters, water depth of 0.6 meters to 0.8 meters cement pool is better, you can also choose the area of ​​667 square meters to 2000 square meters, slope ratio 1:2, water depth 0.5 meters ~ 1 Rice earthen ponds must have sufficient water sources, good water quality, convenient drainage and drainage, built anti-escape facilities, disinfect ponds, and build new concrete pools to be alkalined and then disinfected. Then every 500ml of 667m2 of decomposed manure and livestock excrement is used to cultivate natural foods that juvenile shrimp prefer to eat, such as plankton, rotifers, copepods and other plankton. In addition to setting roots, bamboo tubes, and other objects, the pond should also be equipped with a certain number of submerged and floating plants to provide juvenile shrimp climbing habitats, clam shells, and shelters. Juvenile shrimp stocking capacity is generally 150 to 230 per square meter, the shrimp seedling specifications remain the same, and choose sunny morning or cloudy days. In the first week after stocking, grated soybean milk can be fed and fed 3 to 4 times a day. In the second week, animal feeds such as small fish shrimp, snail meat, cockroach and silkworm cocoon are mainly fed, and the corn is appropriately matched with corn. Wheat flour, fresh plants, stems and leaves are mixed and crushed and processed into paste feeds, one for early and one at night, and 70% for daily feed at night. Daily feeding rate is 0.25 kg to 0.40 kg per 10,000 juvenile shrimps, and then it is fed at about 10% of the weight of shrimp in the pond. During the cultivation process, change the water once every 7 days to 10 days, change the water in the pool by 1/3 each time, keep the dissolved oxygen in the pool at 5 mg/liter or more, and use 20 g of water for quick lime per cubic meter of water for every 20 days. Sprinkle once to regulate the water quality and increase the content of free calcium in the water to provide the calcium needed for growth of juvenile shrimp in the oyster shell. The larvae are cultivated from 25 days to 30 days, and the pods grow by 5-8 times and their body length can reach 3%.

Size: 350 grains/50g,Millions of people throughout Asia consume Goji berries every day for both their unique, satisfying flavor, and for their health benefits. In China`s first herbal encyclopedia, Shen Nong`s Materia Medica, written in the 1st century B.C., Goji was classified as a [superior tonic," a class of herbs that people should take on an on-going basis to preserve youth and to promote general well being of life. Goji`s superior tonic classification has stood the test of time. Two thousand years later, Goji berries are still being consumed regularly throughout Asian civilizations for those purported reasons. We now know that Goji berries are a [high-ORAC" antioxidant-rich superfruit featuring important phytochemicals such a beta-carotene, zeaxanthin, betaine, polysaccharides (LBPs), trace minerals and vitamins.

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Conventional Goji Berry

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Millions of people throughout Asia consume Goji berries every day for both their unique, satisfying flavor, and for their health benefits. In China`s first herbal encyclopedia, Shen Nong`s Materia Medica, written in the 1st century B.C., Goji was classified as a [superior tonic," a class of herbs that people should take on an on-going basis to preserve youth and to promote general well being of life. Goji`s superior tonic classification has stood the test of time. Two thousand years later, Goji berries are still being consumed regularly throughout Asian civilizations for those purported reasons. We now know that Goji berries are a [high-ORAC" antioxidant-rich superfruit featuring important phytochemicals such a beta-carotene, zeaxanthin, betaine, polysaccharides (LBPs), trace minerals and vitamins. Red  Goji

Size 350 Conventional Goji Berry

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