Prevention and treatment of crooked head disease of cultured bullfrog

In recent years, as bullfrogs are very popular on the dining table of the public, the number of farmers who raise bullfrogs is gradually increasing. Bullfrog breeding has become a new species in aquaculture. In the process of bullfrog breeding, there are often some diseases. Bullfrog crooked head disease is one of the common diseases. Let's learn about bullfrog breeding with Xiaobian.

Prevention and treatment of crooked head disease of cultured bullfrog

Etiology: infection caused by Flavobacterium septicum.

Symptoms: the skin of the diseased frog is black, the neck is askew to one side, anorexia is lazy, the body loses balance, and the body turns when swimming. Seriously ill people often occur at the same time with cataract disease (white eye disease). After dissection, it can be seen that there is congestion in the liver, kidney, intestine and other organs of the diseased frog.

Prevention and treatment:

1. Strengthen management and do a good job in disinfection of water quality and feed.

2. Add "frog Bikang" to the feed and use it every half a month.

3. The whole pond was disinfected by sprinkling "Fish with Bomimel" in the sick pond, and at the same time, it was fed with "Frog Bikang" for 3 or 5 days.

Prevention and control of rotting tail disease of bullfrog

The main cause of bullfrog tail rot disease is that the rotifer parasites on the skin of tadpoles because the pond water is too dirty and the stocking density is too high, which can not be relieved effectively, so that the tail of bullfrog tadpoles is seriously corroded. the condition of rotten tail disease is from mild to severe.

1. Properly reduce the stocking density and change the water frequently. Keep the water quality fresh;

2. During the onset of the disease, sprinkle with "Poison No. 2" in the whole pool, and at the same time feed "Waobikang" once a day for 3 days.

3. The effect of soaking diseased tadpoles with "soaking Bomo" is better.

What does bullfrog eat?

Bullfrogs are carnivores with a wide range of food, including annelids, arthropods, molluscs, fish, amphibians, reptiles and mammals. It is reported that bullfrogs are mainly animal pests that devour crops (82% of the population), as well as a small number of beneficial animals (5.2%). Bullfrogs also swallow some plant-based foods, mostly leaves, flowers and plant seeds. Bullfrogs are very gluttonous and eat a lot. It is observed that a bullfrog eats 43.7 grams of food in one night. The swallowing amount of bullfrog is related to the change of temperature. The food intake was the most at 21: 30 ℃, the least at 20: 14 ℃, and stopped when the water temperature was below 14 ℃. Bullfrogs are also extremely resistant to hunger and can generally endure for four months to a year.

Bullfrog has a wide range of food, but it is mainly animal food, and its diet is different from that of adult frog during tadpole period. Tadpole stage is omnivorous, the food requirements are not strict, almost all plankton in the water can eat, but also can eat generally fed fish feed, especially like boiled egg yolk, raw fish, liver, maggots and boiled potatoes, sweet potatoes, rice bran, peanut meal, etc., the rest such as tofu, fruit peel can be used as bait Adult frogs are addicted to active bait, trapping insects, crustaceans, small fish and shrimp, snails, worms, spiders, cicadas, locusts, crickets, termites, maggots, earthworms, fish eggs and waterfowl.

Feeding techniques of bullfrog

1. The young frogs that have just taken off their tails only eat live food, not dead food. At this time, they should all be fed to live-eating animals such as yellow powder insects, fly maggots, rice shrimps, small earthworms and small insects. When feeding, throw the live food in the table or the shallow water by the pool, let the live food crawl and jump, and lure the bullfrog to eat. During this period, bullfrogs have strong digestibility, eat more and grow fast. it is determined that the body weight of bullfrogs can be doubled in 7 days. It should be fed 3 times a day, accounting for 8% or 12% of the total body weight of bullfrogs.

2. The bullfrog that has just taken off its tail for one week, weighing about 30 grams, should be domesticated, and the number of live feeding animals (such as fly maggots, Tenebrio Molitor, rice shrimp and small earthworms) varies from more to less every day. The daily feeding of dead (dried) food (such as dried rice shrimp and small dried fish) is from less to more, 2 to 3 times a day, with a fresh feed of 8% or 10% of the body weight of bullfrogs or about 4% of dry food.

3. More than 100 grams of young frogs and more than 100 grams of bullfrogs should not be fed with small particles such as fly maggots and rice shrimps, but should be fed with larger small fish, Loach, earthworms and other foods. If the bullfrog has been domesticated, it should be fed with fresh dead fish, eel head and tail, light dried fish and bullfrog formula feed and other dry feed. If artificial compound feed is fed, expanded floating pellet feed and hard pellet feed can be used, and the following requirements should be met:

The size of ① is suitable, which is similar to the dead fresh feed and live bait eaten by bullfrogs, and it is suitable for bullfrogs to swallow in one bite.

② does not contain salt, oil or the smell that bullfrogs do not eat.

③ surface is smooth, not easy to see water will disperse, there is a sense of wet and slippery.

④ nutrition is comprehensive, protein content more than 30%, must have complete amino acids, all kinds of elements are not lacking. During this period, bullfrogs like to be quiet and afraid of worry, so they should feed once or twice every evening or evening, each time as a proportion of their body weight: 6%-8% fresh food and about 3% dry food.

If bullfrog breeding wants to make high profits, then disease treatment and prevention are the key. Only by reducing the occurrence of diseases can more profits be created. Therefore, in the process of bullfrog breeding, it is necessary to master not only the breeding techniques and skills of bullfrogs, but also the prevention of some diseases of bullfrogs.