Techniques of culturing soft-shelled turtle in greenhouse in spring

Spring is not only the turning point of climate change, but also the beginning of a new culture cycle of soft-shelled turtle, so the spring management of soft-shelled turtle culture in plastic greenhouse is particularly important. The technical work of management in spring mainly includes the following aspects:

I. Inspection and repair of plastic greenhouse

If the temperature is unstable in spring, the plastic greenhouse must be checked frequently, the damaged parts should be repaired in time, and the stability of hinged joints should be paid attention to.

2. Cultivation of juvenile soft-shelled turtle

From February to March, juvenile and juvenile soft-shelled turtles should be selected and raised in ponds according to large, medium and small specifications, so as to avoid biting each other. At the same time, combined with the separate ponds of juvenile and juvenile soft-shelled turtles, the water of the pond was changed thoroughly and the dirt at the bottom of the pond was removed.

III. Breeding of adult soft-shelled turtles

In April, the soil at the bottom of the adult turtle pond should be cleaned, new sand or soft mud should be added, and then disinfected. The quicklime dry method should be used to clean the pond and leave the pond water to a depth of 5-10 cm. The dosage of quicklime is 60-75 kg per mu, and the whole pool is sprinkled after pulping. It is best to use mud rake while raking, and then release the young turtle after the medicine disappears for about 7 days.

The young soft-shelled turtle should be washed and disinfected with 2.5% salt solution at a water temperature of 10-32 ℃ for 10-20 minutes before stocking, which can kill bell worms, twigs, leeches and so on. The stocking water temperature should be more than 20 ℃, the time should be in mid-late April or early May, and the stocking density should be 6-8 young soft-shelled turtles per square meter, which can reduce the intermediate separate culture links and make the growth of adult soft-shelled turtles as little as possible. The newly released soft-shelled turtle has a poor appetite in about a week, so the initial artificial formula feed is 0.5-1% of the body weight (different with dry matter juice). Later, with the elimination of the tension of the soft-shelled turtle, the feeding amount can be increased to 2% of the body weight. Once a day in the morning and once in the afternoon, according to the total feeding method. Or turtle feeding and management work is more, but the most important thing is water quality management. In addition to keeping the water temperature 25 ℃, we should also look at the water color and transparency. The water color should be oil green or dark green, and the transparency should be 20-30 cm.

IV. Management of parent turtles

When the air temperature and water temperature rise to about 20 ℃, the parent soft-shelled turtles recovering from hibernation should be fed with fresh fish and shelled mussels which are easy to digest and like to eat. After the new soft-shelled turtle recovers from hibernation, the application of quicklime every 10-15 days (10-15 grams per cubic meter of water) can increase the calcium in the water, disinfect, prevent disease and control the water quality, and keep the transparency of the pool water about 30 cm.

In a warm climate, parent soft-shelled turtles will begin to lay eggs in late May. Therefore, in late spring, we should root out the weeds in the spawning ground as early as possible, trim and loosen the sand table in the spawning ground, add new river sand and inspect and maintain the comprehensive environmental conditions around.