Bullfrog feeding and management

(a) The construction of Dianchi Lake comes from breeding 178

蝌蚪 It is better to use a potted soil for the cultivation pond. If there is a ready-made cement pool, it can be used. The water depth of the pool should be maintained at 40 to 60cm, and wells and drain holes should be installed. Before the forelegs reach out, put some planks, reeds, etc. in the pool so that the frogs can land. Breed Price Quotes.yangzhi178.cn

The earthen ponds should be cultivated and the area should be larger. If the area is small, the water quality is not easy to stabilize. In general, the area of ​​each earth pool is between 40 and 200?, and the depth of the pool is l?1.2m, and the water depth is maintained at 0.8 to 1.0m. The pool slope is 1?1.5. If you want to build several ponds, keep the pool width the same so that you can pull the pool into pools. Dianchi Lake also has to stay on land, with land area accounting for 1 / 3 of the water surface. When the perch is approaching metamorphosis, a shelter is placed on the land of the pool. The roof of the shelter is 60-80cm above the ground, and branches and grass can be used on the roof.
Several pools should be built. The purpose is to keep the different sizes of quail in separate ponds, so that the hawksbill can be relatively neat when it is abnormal, so as to avoid the occurrence of frogs eating crickets. There must also be anti-escape walls or nets around Dianchi Lake. The increase can be comparable to that of a frog pool or a pro-frog pool. Breeding 178 with you!

(II) Disinfection in Dianchi Lake

L. The earthen pond is sterilized with 50-70kg of quick lime per 667? (1 mu). If there is more silt in the bottom of the pond, it can be increased to 80kg per 667? When using the quicklime for disinfection, dry the pool water first and dig a few 1 to 2 at the bottom of the pool. In the pit, pour the weighed lime into the pit, stir it evenly after adding hydration, and spread the limestone slurry evenly throughout the pool. The pool should be evenly poured onto the land. In order to increase the bactericidal effect of detoxification, the sludge on the bottom of the tank is turned with tweezers on the second day after disinfection, so that the lime slurry is fully mixed with the sludge at the bottom of the tank so as to kill the muddy, pathogenic and other harmful organisms that have entered the sludge. If the mud is turned and then exposed to strong sunlight for 3 to 4 days, the disinfection effect is better. When the bleaching powder is sterilized, put the dry pool water first, put the weighed bleaching powder into the tub, dissolve and dilute and evenly sprinkle the floor of the pool and the land along the pool. On the next day, the mud in the bottom of the pool should be turned with a rake so that the pesticide can fully exert its bactericidal action. Breeding 178 with you!

2 . Cement ponds are sterilized with quicklime for every 10 to 0. 5 to 1kg or bleach for every 10 to 0.1kg. Rinse the pool first, dry the water, dissolve the quicklime or bleach agent, and spill it on the bottom of the cement pool and the pool wall. Fill the pool water every other day and let the chemicals dissolve in the water again. Soak for 2 to 3 days. Pool water, and rinse lime stains or bleaching stains on the cement pool walls, and let the sun shine for 2 to 3 days.
3 The dosage of cage disinfection and bleaching powder is 1g/m3 water. When disinfecting, first calculate the amount of water in the cage's water body, and then spill the bleach disinfectant into the body of water placed in the cage. This disinfection is a kind of prevention and disinfection, and it is usually conducted 2 to 3 days before the fish is stocked in the cage.
The disappearance time of quicklime toxicity is generally 7 to 10 days, and the bleaching time of bleaching powder is generally 3 to 5 days. In order to reduce unnecessary losses, the disinfecting water body should be subjected to a residue test one day before the bullfrog is stocked, commonly known as “test water”. The method is to put a small cage in the disinfectant pool and put 10 to 20 bullfrogs. If 24 hours later, the toxicity of the disinfectant has completely disappeared. If there is still death within 24 hours, it should be postponed. For 2 days, change the water again so that the toxicity disappears before releasing it.

(3) Restocking of cockroaches

1 The frogs hatched before the end of May each year are called as early and early pupa. The quail should be intensively reared, striving to keep them alive after 75 to 85 days, and then developing 75 to 100 g of each body weight. The young frogs are used for safe wintering. Therefore, these bullfrogs need to be properly bred. The land cement ponds are stocked with oysters of one month old, with 800-1000 tails, and one-month old quails with 200-300 tails. Boxes are stocked with one-month-old pupae, each with 2500~3000 tails, and one month old pupae, each with 1000~1500 tails.

2. The frogs hatched after the first time in early June each year become late and late. These quails can be metamorphosed into young frogs before wintering, but they are small in size and weak in physique. The difficulty in wintering increases. If they are allowed to pass through the winter in the pupa form, they are metamorphosed into young frogs by the end of the second year in the late spring and early summer. The pool is stocked with 1,500 to 2,000 pigs per year, and is dilute once and twice before and after Qingming in the second year, with 200 to 300 fishes per stocking. The cages are stocked with 2000 to 3,000 fishes per year and then dilute once each year before and after Qingming. • Stocking 1,000 to 1,500 tails.

3 . The first method of stocking is to pull nets. No matter if it is early or late, or it is too late, three days before stocking, it should be done. The method is to use a 40-mesh polyethylene net cloth to pull the larvae that are about to be bred in the whole pool into the net as much as possible, highly intensive for 20 to 30 minutes. When the buzzing phenomenon occurs in the net, the net is immediately removed from the net and returned to the original hatching pond. The next day, in the same way, the small raccoon was caught in a long net cage with a width of lm, a length of 5m, and a height of 0.5m, and intensively cultivated for 3 to 4h. This allowed it to adapt to the dense environment again, emptying the intestine and returning it to the original pool. . In this way, after these two intensive net exercises, the delicate bullfrog has become old. On the third day, they were trapped in a long box and bred for 2 to 3 hours. After emptying the body, they could be bred or sold. Followed by the sample count, the production of commonly used sample cup or sample bowl for proofing count. The method is: First make a sample cup or bowl with dozens of small holes drilled at the bottom, then count the number of appendixes. Based on this, find the total mantissa again. Breeding 178 with you!

4 . Reminder precautions due to bullfrogs are more tender. Restocking should also pay attention to the following items: The inner wall of the transport container should be smooth so as not to scratch the body of the bullfrog. The temperature difference between the temperature of the water in the container and the temperature of the stocking pool should not exceed 2-3°C. Too large a temperature difference can easily cause discomfort in stocking and sickness and death. Should gradually change the water or change the water or oxygenated plastic bags soaked in the pool water for about 0.5h, until the temperature difference is less than 3 °C and then stocking, the action of feeding bullfrogs should be brisk. The container is usually placed in a stocking tank, and then the container is slowly tilted so that the oysters can swim into the pond.

(d) Feeding of cockroaches

The newly hatched bullfrog has a total length of about 4 to 5mm, and is black throughout. It grows by absorbing nutrients from the yolk sac of the body. There is a horseshoe-shaped suction cup on the abdomen, and the swimming ability is very weak. Most of them rely on suction cups to adsorb on the cement pool wall and aquatic grasses in the hatchery pond. At this time, there is no need to feed 3 to 4 days, but the amount of dissolved oxygen in the hatchery must be sufficient. At this point in the event of lack of oxygen, the whole pool will die.
1 . On the 3rd and 4th days after the start of the filming, the yolk sac in the body of the bullfrog was gradually absorbed and the food was fed to maintain the life activities. The best starter diet for the bullfrog is the cooked egg yolk. Generally, 1 boiled egg yolk is fed every 10,000 days. The egg yolks were fed continuously for 3 to 4 days and then fed with soymilk for about 1 week. 0. 5kg soybeans plus 4 a 5kg water mill into a very thin milk, filter residue after each hatching pool water 300 300ml soy milk. Usually two times a day, that is, 9-10 hours in the morning and 3-4 hours in the afternoon. Soymilk evenly sprinkling the entire pool, a small number of times.

2. Feeding starts from the 10th day of age. Set up a food table near the dike in Dianchi Lake and feed the feed on the table. This will not only reduce the loss of feed, but also to observe the status of eel eating, easy to adjust the feeding program at any time. 2,000 to 2 500 tailed bullfrogs are placed on a food table, usually 50 to 60 cm in length and 30 to 40 cm in length, made of thick mats or polyethylene mesh cloth. The four corners are tightly bound with four small bamboo sticks and then inserted into the dike. 0.5 to 1.0m at the pond, and immersed in the water 20 to a 30cm place. From the 10th day of age, the feed of the bullfrog tends to gradually increase the animal feed, such as fish meal, silkworm cocoon powder, clams, and fresh miscellaneous fish. It is formulated into high protein content in plant feeds such as bean cakes, cakes, bran and rice bran. (More than 30%), nutritious compound feed. Cakes and bean cakes are first groundwater-saturated and then water-milled. Silkworm cocoons are ground and ground into powder. Various feeds are mixed well with the formula, and a moderate amount of water is added to make a loose feed pellet. One by one on the feed table. Each time the feed is fed, it will take about 3 hours to eat, and increase or decrease as appropriate. If the weight of bullfrog tadpoles is used, the daily feeding amount of compound feed (dry powder) is about 5% to 7% of the total weight of tadpoles, and the bullfrog tadpole enters the large metamorphosis stage after it is born. At this time, the feed intake of the cockroach was significantly reduced, mainly by absorbing its plump tail. At this time the feed can be fed less, it is recommended that the daily feed amount of the feed is controlled at 2% to 3% of the total weight of the paralyzed fish. Copyright

(five) Management
1 . The purpose of frequently changing new water and changing water is to regulate the water quality of the Dianchi Lake, increase the amount of dissolved oxygen in the water, increase the level of metabolism, and promote growth. Replacement of Dianchi Lake Water should be selected on sunny days, usually at 7-8 hours after the rising sun. At this time, the temperature difference of the water changing is small, and it takes a long time for the sun to change the water, and it is easy to adapt to the new water body. The amount of water changed is generally about half of the original amount of water in Dianchi Lake. Change the water in spring, summer and autumn. The temperature of new water to be injected should be slightly lower than the temperature of the original pool by 0.5 to 1.0°C. If the temperature difference exceeds 3 °C, the temperature should be properly adjusted so that the temperature difference is less than 3 °C and then change the water or reduce the speed of water change. The frequency of changing the water varies from season to season, once a week in the spring and autumn, twice a week in the summer, once in the winter 2 to 3 weeks, or without changing the water.


2 . Keep the pool water clean and remove the floating debris and dead fish on the surface of the pool. Remove the residual feed on the food table. The food table should be washed and cleaned every day, and in bleaching liquid or lime water at a concentration of 1 g / m3. Soak and sterilize 5 for 10 minutes and put it back in place. Disinfect the body of water frequently. It is best to use a bleach solution of 0.5 to 1.0 g/m3 of water every 10 to 10 days or lime of 10 to 20 g/m3 of water. The pool is disinfected and washed once to ensure that the pool in Dianchi is clean.
3 . Timely rescue of floating heads Floating heads mostly have aura, such as disease-free cockroaches suddenly reduce the amount of food; the water in the pool suddenly becomes black and turbid, the water surface, pool bubbles and bubbles are frequent; the cockroaches no longer vertically or upwardly in the pool water The surface of the water devours buoyant feed, but it floats out on the water and does not eat. It is not restless when it sinks. The degree of floating head is generally judged by naked eye observation. The frivolous head does not need to panic and it does not need to take rescue measures. If the weather is hot and rainy, and there is no wind or wind turning south from the mountains, the temperature is often high, the air pressure is low, the oxygen consumption of organic matter increases, the water quality is prone to deterioration, the dissolved oxygen in the water is gradually reduced, and the phenomenon of bullfrog buzzing can easily occur. Sometimes floating heads appear in the first half of the night or even in the evening or after a thunderstorm. The floating head is a heavy floater. Immediate measures must be taken to rescue it. Fresh water should be added immediately. The water flow should be flushed on a wooden board or reed mat and then poured into it. Pool. Dianchi Lake, which can not be injected with fresh water, can use 225 to 625 kg of yellow mud or 7.5 to 15 kg of alum solution per hectare to sprinkling the whole pool, so that a large amount of organic matter in the pool can be adsorbed and precipitated at the bottom of the pool, reducing the oxygen consumption of organic matter to maintain the pool. The requirements for oxygen.
4. Promote the landing of bullfrogs in time. After the growth of forelimbs, the respiratory function of the baboons gradually deteriorates, and the structure and function of the lungs gradually improve. At this time bullfrog tadpoles can not live in the water for a long time, but often exposed the surface of the water, boarded the ground to breathe air in order to maintain the oxygen needed for their life metabolism. During the physiological metamorphosis of the bullfrog, a slight oversight of management will result in a large number of deaths. This is a dangerous period in the management of bullfrogs, also known as the peak of death. To this end, at this stage, we must actively create conditions to give landing conditions in time to allow them to land. First, reduce the water level in Dianchi Lake, and reduce the depth of Dianchi Lake from 70-80cm to 20-30cm, exposing some poolside beaches and pools. Mound for its landing: the second is to Dianchi put some wood, plastic foam board and other floating on the water, so that the metamorphosis of the raft on board the board or foam board to breathe air, in order to safely metamorphosis into a young frog.

5. Timely prevention and treatment of diseases Bullfrogs are delicate and susceptible to disease. Once the disease is found in the bullfrog, it should be prevented and treated in time.

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