1 Overwintering management When the outside temperature falls below 10°C, the forest cricket's activities decrease and no more feeding is done. As the temperature gradually decreased, Rana sylvatica began to hibernate. There are two ways to hibernate the forest frog: one is to hibernate directly on land, and the other is to hibernate in water.
2 Breeding management (1) Remove the hibernating and resuscitating Rana sylvatica from the wintering pond and put it into the spawning pond at a 1:1 male-female ratio. The stocking density is 30 pairs per square meter. Spawning pool water depth of 15 ~ 20cm, the pool to set up hidden objects. The bottom of the pool requires a flat, no sludge. The peak period of spawning is around 4-5 o'clock in the morning, and no eggs are laid during the day. After the frog eggs are produced, the egg masses will swell and expand. After 2 to 3 hours, they can be removed and put into hatching ponds for hatching. It should be noted that the egg masses cannot be removed too early, otherwise the fertilization rate will be affected. Eggs that are not produced on the same day cannot be hatched in the same pool. The hatchery requires fresh water, no pollution, sufficient dissolved oxygen, and the bottom of the tank should be clean and free from sludge. The egg masses can not be moved or transported in the late stage of hatching, otherwise it will cause the diaphragm to advance out of the membrane and produce abnormal defects, which will affect the survival rate of the earthworms.
(2) The egg masses hatch after about 5 days and do not need to be fed at this time. One week after the film was opened, artificial feed was started and splashed with soymilk and egg-yolk was started. Gradually, cooked corn meal, wheat bran, vegetables, fish meal, pig lung and other feeds were gradually fed. In the early period, animal feeds were mainly plant feeds, and animal feeds were mainly plant feeds. The feed was fed once a day in the early stage and twice a day in the later period. It was advisable to feed the feed with a little surplus in the pool. The content of protein in feed should gradually increase. Change the water frequently after you start feeding the food and regularly disinfect it.
(3) The rearing density of earthworms should be 1000 per square meter. It is appropriate to grow the earthworms according to the size of the earthworms in order to reduce the stocking density. The same size larvae are bred in the same pool. After about 30 days of feeding, the cockroach begins to enter metamorphosis.
3 After the management period of the larval rearing period enters the metamorphosis period, the metamorphosis of the larvae must be transferred to the puddle of the pre-contaminated young frog pool before the tail disappears. The stocking density is 200 per square meter. The newly metamorphosed frog does not need to feed. After the frog’s tail is completely absorbed, it is fed with 2 to 3 months of young yellow mealworms or 1 to 2 days of fly maggots, and uses light to lure the natural insects as supplementary feed. Feeding time is 1 time in the morning and evening. It is advisable to have a small amount of surplus in the field, and be careful not to put it into the puddle. After the young frog enters the pool, water should be sprayed in time according to the dry and wet conditions of the soil in the site. To keep the soil moist and unable to accumulate water, sprinkle water about 2 hours apart from the feed. Sprinkle water in rainy days, sprinkle water in sunny days, and spray 2 or 3 times a day in hot summer. The farms should be sterilized regularly with bleaching powder, feeds should be kept clean, antibiotics must be fed regularly, and the feeds should be diversified. Take a patrol pool every day to observe the growth of the frogs and make anti-escape work. The main enemy of Rana sylvatica is birds, rats, snakes, etc., with the most serious pests. Should pay attention to prevention and treatment.
Hepatitis is a general term that describes inflammation of the liver. Hepatitis can damage the liver, affect liver function, and over time lead to complications such as cirrhosis, which is severe scarring of the liver, and liver cancer.
There are many types of hepatitis, with both infectious and noninfectious causes. Infectious hepatitis is caused by an infection with a virus, bacteria, fungus, or parasites. The most common type of infectious hepatitis is viral hepatitis, which describes hepatitis caused by an infection with one of several hepatitis viruses. Viral hepatitis includes five main types:
Hepatitis A: Hepatitis A is caused by the hepatitis A virus (HAV). This type of hepatitis is spread easily through contact with stool or blood of an infected person. This can occur through contaminated water and food, sexual contact, or shared intravenous needles. The hepatitis A virus causes acute infections that are often mild, typically resolving without treatment within several weeks. Highly effective vaccines are available to prevent hepatitis A.
Hepatitis B: Hepatitis B is caused by the hepatitis B virus (HBV). Hepatitis B can be spread through contact with an infected person`s blood or certain other body fluids, including transmission from a mother to her baby. This virus can cause either acute or chronic infections. Highly effective hepatitis B vaccination is available to prevent infection.
Hepatitis C: Hepatitis C is caused by the hepatitis C virus (HCV). The hepatitis C virus is spread through exposure to the blood of a person with this infection, often through the use of injectable drugs and during birth to a mother with an HCV infection. This virus can cause both acute and chronic infections. Currently, there is no vaccine to prevent hepatitis C; however, it is treatable.
Hepatitis D: Also known as delta hepatitis, hepatitis D is caused by the hepatitis D virus (HDV). This virus is unique in that it only infects people who already have the hepatitis B virus. HDV is spread through the blood or other body fluid of an infected person, most often from sharing needles and unprotected sex with a person who has this infection. Hepatitis D can be either acute or chronic. The vaccine for hepatitis B can prevent hepatitis D because only those infected with hepatitis B can contract HDV.
Hepatitis E: Hepatitis E is caused by the hepatitis E virus (HEV). Hepatitis E is spread through ingesting small amounts of the virus, often through drinking contaminated water and from animals to people when consuming undercooked foods like pork or wild game. HEV causes an acute infection that doesn`t require treatment.
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