First, it's important to focus on the self-production and self-inflicted childishness of the larvae. After hatching, they enter the greenhouse following a brief incubation period. They quickly adapt and move into a normal growth phase. Juveniles are early eaters, grow rapidly, and have a high survival rate, making this stage crucial for successful breeding.
Second, attention must be given to disinfection procedures. Before entering the pond, juvenile turtles should be sterilized. Common methods include using 5% saline or a 5ppm malachite green solution, with a dip lasting around 10 minutes. It's important to note that potassium permanganate should not be used, as it can be too harsh and may cause burns if the concentration is even slightly higher than recommended.
Third, stocking specifications and density play a vital role in ensuring healthy growth. The larvae entering the pond should weigh more than 10 grams each. These larger larvae tend to grow faster and have stronger disease resistance. A stocking density of 18-20 per square meter is ideal—too many can lead to cannibalism and lower survival rates. When stocking, it’s also essential to separate strong from weak individuals and maintain uniform size within the same pool.
Fourth, the depth of the water in the greenhouse should not be too deep. A depth of 30-40 cm is most suitable. If the water is too deep, soft-shelled turtles have to swim from the bottom to the surface to feed and breathe, which increases energy expenditure and negatively affects their growth.
Fifth, regularly moving the water hyacinth can help improve the turtle's environment. Removing some of the plants increases available space and reduces external disturbances. Additionally, water hyacinth helps purify the water, has extensive root systems, and regenerates quickly. It's also a preferred plant-based food for turtles, and maintaining a coverage rate of 30-40% is recommended.
Sixth, using photosynthetic bacteria is an effective way to regulate water quality. In non-flowing greenhouse environments, where full-priced feeds with high protein content are commonly used, waste accumulation can easily degrade water quality. Frequent water changes or increasing water levels can stress the turtles and affect their growth. Photosynthetic bacteria help improve water conditions, promote the growth of natural food organisms, and reduce pollution.
Seventh, increasing the number of feedings while reducing the amount per feeding can enhance food intake and digestion efficiency. When the total daily feed amount remains constant, feeding more frequently keeps the turtles in a semi-starved state, encouraging them to eat more and utilize nutrients better. Feeding 4-6 times a day is generally considered optimal.
Lastly, maintaining a quiet and stable environment is essential. Soft-shelled turtles are sensitive to noise and sudden movements. Daily management and feeding should follow a fixed schedule. Movements should be quick and minimal, and unnecessary people should be kept out of the greenhouse. Throughout the feeding period, the turtles should not be moved unnecessarily to avoid stress and ensure optimal growth.
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