Wai Tang commercial turtle breeding guidance
First, stocking density
According to the Chinese Standard GB21044-2007 and the Chinese sturgeon breeding technical specifications, the Chinese sturgeon pond aquaculture technical specification GB/T 26876-2011, it is recommended to store about 300 grams per square meter, about 1.5-2 species.
Second, the water temperature control
Water temperature 25-30°C is the best temperature range for the growth of Chinese sturgeon. When the water temperature is higher than 25°C, Chinese sturgeons begin to feed normally, and the food intake increases with the increase of water temperature. When the water temperature is lower than the optimal temperature, the feed conversion rate will decrease; when the water temperature is higher than the optimal temperature, the feed conversion rate will also decrease due to the increase of the activity amount, so the water temperature should be kept within the optimal temperature range, too high, too low It will cause feed wastage.
Third, water quality regulation
Chinese sturgeons like to fear the dirty net, water quality control determines the success or failure of breeding. Oxygen can be selected within a fixed period of time to make the Chinese sturgeon form a habit, reduce the disturbing effect of oxygenation on Chinese sturgeon, reduce the content of harmful gases and harmful organic matter in the water, and rational use of microbial agents can save water quality control and other aspects. The input; regular sewage, bottom reform is an effective means of controlling water quality, change the water is the most direct way to regulate water quality, change the water should be based on water quality decisions to change the amount of water.
Fourth, feed feeding
The feeding method of feedstuffs and the quality of the selected feedstuffs are adjusted according to changes in temperature and water temperature and the situation of medication. Generally, soft pellet feeds are fed underwater and the Chinese sturgeons grow too fast during excessive feeding, which may easily lead to Chinese sturgeon. Increased or overloaded physiological loads cause damage to internal organs of Chinese sturgeon and induce visceral diseases. Therefore, control should be finished within 30min.
V. Disease control
Before entering the pond, the species should be disinfected before entering the pool. Soak the larvae with 0.1% povidone-iodine solution for 30 minutes before entering the pool. Before Chinese sturgeon weight 50g, it is controlled by water temperature (appropriately 30-31°C) and cultured water body to prevent mycosis. At this stage, the physique of the larvae should be enhanced to avoid mechanical damage; Chinese sturgeons should guard against the occurrence of white spot disease when they weigh 50-150 g, and regular use of heat-clearing and detoxifying Chinese herbs has a good preventive effect. Routine disinfection uses bromine and chlorine as the main agents, and focuses on the cultivation of beneficial bacteria in the water, establishes a good microecological environment for water bodies, weighs 50g to develop, to prevent acne disease, and to prevent white spot disease.
Sixth, product specifications
According to the consumer habits of the market, the size of the individual goods is determined. Generally, the market size of Hangzhou is 400-650 grams (male). The breeding time must pass two winters and more than 24 months.
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