A Detailed Explanation of Black-Spotted Frog Breeding Techniques and Management Points

Prepare a paddy field with high, flat terrain away from noisy areas such as urban districts, then disinfect it and remove natural enemies, and set up the pipes properly. Next, set up hiding places inside the pond and plant vegetables around it, then stock female and male frog seedlings at a 1:1 ratio. Finally, add water, raise the tadpoles, and carry out basic management tasks such as disinfection and feeding management.

Detailed explanation of black-spotted frog breeding techniques:

1. Site selection

The breeding site for black-spotted frogs must be at a certain elevation; do not breed them in low-lying areas, to avoid flooding. There must also be an adequate supply of clean water nearby. The site is generally best chosen as a paddy field with high, flat terrain away from noisy areas such as urban districts. After choosing the site, disinfect it and remove natural enemies in the paddy field, such as leeches and crayfish. This prevents harm during the tadpole stage and improves the hatching rate of the seedlings. Then complete the pre-buried pipework to prevent water leakage, lay ground netting to prevent the black-spotted frogs from escaping, and take bird-proofing measures, creating a safe growing environment for the black-spotted frogs.

2. Artificial breeding

First, we need to put black-spotted frogs at a 1:1 ratio of females to males into the breeding pond. Keep the water level in the pond at around 40 cm, and place a few foam boards as feeding sites and resting places for the black-spotted frogs. After entering October, because the temperature drops, a heat-preservation shed must be built. Also, because the temperature difference between day and night is relatively large, attention must be paid at night to raising the water temperature. Through these methods, shorten the black-spotted frogs' hibernation period, extend the development period, promote gonad development in the black-spotted frogs, and advance the breeding time. Then control the breeding method appropriately according to the actual situation, mainly using natural breeding and artificial induced spawning. April to June each year is the main breeding time for black-spotted frogs.

3. Raising tadpoles

After successful mating, tadpoles hatch in about 3 days. Newly born tadpoles should be properly fed rotifers, egg yolk, and other feed, scattered into the water. Then after about a week, feed them special tadpole feed, or make your own from fish meal, soybean meal, and so on. Control the rearing density well: in the early stage, stock about 800 per sq m; after two weeks, reduce to about 400; and for the final large tadpoles, keep about 200 per sq m. Then feed at least twice a day, controlling the feeding amount according to tadpole body weight and keeping it at about 8%. After about a month, the tadpoles enter the metamorphosis stage; at this time, put some water hyacinth and other plants into the water to make it easier for the tadpoles to come ashore. Finally, pay attention to changing the water regularly to maintain water quality, keeping the water level at around 30 cm.

4. Adult frog breeding

At present, the main method of breeding adult frogs is paddy field breeding. This is because adult frogs can feed on the pests that harm rice growth, and the excrement produced by black-spotted frogs can serve as fertilizer to provide nutrients for the rice. Therefore, the amount of chemical fertilizer and pesticide applied can be reduced, lowering environmental pollution. Both rice and black-spotted frogs are natural green foods. However, pay attention to anti-escape measures, and dig frog ditches properly to facilitate the growth of the black-spotted frogs. For the rice, choose varieties with strong fertilizer tolerance and resistance to lodging. The time for stocking adult frogs should be controlled to about half a month after the rice seedlings turn green, stocking about 3500 adult frogs of about 15 grams per mu.

The above is the relevant introduction to black-spotted frog breeding techniques. We hope it is helpful to everyone.