High-yield and mixed-breeding techniques for rearing silver carp and Chinese sturgeon

The Suining County Aquatic Products Station in Yancheng City, Jiangsu Province combined with science and technology to carry out research projects on multi-variety parenting models in several towns and villages, combining several leading varieties in combination, exploring several new breeding models, or combining according to the characteristics of each variety Either design new breeding models or include immature breeding models for further testing. In the past year, several mature breeding models have been established, which can significantly improve the efficiency of use of feed, improve the quality of the water environment, reduce diseases, increase overall production capacity and overall economic benefits. Now we will introduce the test situation as follows for your reference:

Test Tongkou conditions

Alimentary Jubilee and Chinese Trionyx polyculture model trials Tangkou selected 4 standardized fish ponds in the Yucheng Town Aquaculture Farm, each 25 mu, with a pond depth of 1.8 to 2 meters. The rearing ponds were rectangular, north-south and flat bottoms. , Slightly inclined toward the outlet, a unified configuration into the drainage facilities, feeding machine, aerator, a total of 100 acres.

Seed stocking

During the period from February 20 to March 10 in the mixed ponds of Allogynogenetic crucian carp and Chinese sturgeon, 1,000 mu fish (about 123 kilograms) of size 6 mu/kg - 10 mussels/kg crucian carp were released. A total of 150 to 200 tails (about 20 kg) were planted, and 80 Chinese sturgeon seedlings with an average size of 330 g/body were planted in May.

Technical measures

Technical line: Standardization of aquaculture pond construction → disinfection of clear ponds → cultivation of biological foods → seed stocks in batches → regulation of water environment → food feeding → disease control → listing of catchers

The cultivation pond shall be constructed as an earthen pond. Before stocking, the ponds, ditches, etc. shall be drained and drained, and the mud and debris at the bottom of the pond shall be removed so that the sludge at the bottom of the pond does not exceed 10 cm. In early February, 20 kg of tea will be used. Mu pond with water 30 cm for disinfection and disinfection of the Qingchi; each breeding pond supporting feeding, aerobic machinery. After 5 days to 7 days after the end of the disinfection, about 70 centimeters of influent water began to be used, and bio-fertilizer was used. The appropriate amount of high-quality organic fertilizer was used to fertilize the basic bait.

Seeds of seedlings were placed in sunny days in late February and early March. The Chinese sturgeon seedlings were grouped and released from the seedling ponds in mid-May to be stocked in demonstration ponds.

Water Control Water for growth control was filtered using 0.1 mm to 0.12 mm mesh bags, and 0.2 mg/l of dibromohydantoin was used after the initial influent. In the period from March to May in the early period of development, the water level should be increased from 1 meter to 1.2 meters. In the middle and later stages of development, from June to December, the water level should be gradually increased to 1.5 meters to 1.8 meters. According to the water quality, the water can be changed as appropriate and the water volume can be changed each time. Not more than 20%. Use chlorine dioxide and other non-hazardous drugs to disinfect every 10 days to 15 days during cultivation. During the middle and later stages of the breeding period, the time for starting the aerator is gradually extended to keep the water soluble in the pool.

Scientific feedstuffs use feedstuff feeders to feed squid full-rate, palatable compound feeds. The feed quality and safety and health should meet the requirements of SC2002 and NY5072. The feed specifications are 1# feeds for early feeding and 2# feeds for medium and later feeds. Normal The amount of feeding on sunny days is 2%-4% of the body weight of the fish. When feeding, the amount of feeding on the day should be determined according to the weather conditions and feeding conditions. The feeding should be carried out twice or three times per day, each time between 5 hours and 6 hours. When the water temperature is low in December, feed it once a day or every other day as needed. Chinese sturgeon does not feed bait alone.

Disease prevention and treatment of fish disease prevention and control should implement the principle of "prevention first, prevention from over control," and measures include:

Food Additive

This catagory includes varities of food additives, including acidity regulators, anticaking agents, defoamers, antioxidants, bleaching agents, leavening agents, coloring agents, color retention agents, enzyme preparations, flavor enhancers, nutritional fortifiers, preservatives, sweeteners, thickening agents Agents, spices, etc.

Food Additive,Cooling Agent,Food Cooling Agent,Cooling Agent Powder

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