What about parasitic intestines?

Parasitic intestinal diseases of fish, because they are parasitic in the body, most of the external drugs are ineffective, and most of them take internal anthelmintic drugs as the main treatment.

<b>1. Coccidiosis</b>

Pathogen: Amyolar.

Hazard object: bluefish.

Symptoms: the gills are pale, many gray-white "tumors" form on the inner wall of the intestinal canal, and the tissues around the lesion ulcerate, producing white pus.

Prevention and control methods:

(1) Feed the iodine liquid bait. Use 30 ml of 4% iodine solution per 250 kg of blue fish for 4 days.

(2) Feed the sulfur powder bait. 50 grams of medicine per 250 kg of bluefish.

(3) Use relevant deworming drugs.

<b>2. Myxosporidium intestinal disease</b>

Pathogen: Myxosporidium.

Hazards: carp, crucian carp.

Symptoms: the formation of white dot-like sacs on the intestinal mucosa. Carp and crucian carp over the age of two can also pass through the intestinal wall, and a large number of sacs appear on the outer wall of the intestine.

(1) 80% of dichlorvos 10ppm soaked rice bran or bran feeding for 3 consecutive days.

(2) Feed every 10,000 fingerlings or per 100 kg of edible fish with 75 grams of mixed bait, once a day for 5-8 days.

(3) Use relevant deworming drugs. 3. Lateral trematodiasis intestinal disease

Pathogen: Japanese lateral trematodes.

Hazards: bluefish, carp, crucian carp.

Symptoms: The sick fish is blackened, slow to swim, and floats in groups on the surface of the downwind water. Fry or summer flower fingerlings can die in large numbers after 3 to 5 days of illness.

(1) Polyculture bluefish eating pond snails (intermediate hosts) is the best control method.

(2) After the fish species are sick, they can be fed with 0.3 grams per kilogram of fish weight per day for 6 days.

<b>4. Taenia cephalus intestinal disease</b>

Pathogen: Taenia cordataensis.

Hazards: grass carp, bluefish, silver carp and other fish species of the year.

Symptoms: The diseased fish is emaciated, does not feed, the mouth is often open, and there are many thin noodles and white insects in the back of the foregulet, which can cause a large number of fish species to die.

(1) Feed the enemy hundred insect medicine bait. Mix 90% of the 50 g of dichlorvos crystals with 500 g of flour and feed for 3 to 6 days. Stop eating for 1 day before feeding.

(2) 20g of thiobichlorophenol is mixed into 5 kg of rice bran for 100 kg of fish to be fed once a day for 4 days.

(3) Feed the pumpkin seeds with medicinal bait. Use 250 grams of pumpkin seeds to form a powder, then mix well with 500 grams of flour and 500 grams of rice bran for 3 consecutive days.

(4) Betel nut 200 a 400g grinding powder, mixed with human feed to make granules, for 100 kg of fish once a day feeding, continuous feeding for 4 days.

(5) Use relevant deworming drugs.

<b>5. Tongue tapeworm intestinal disease</b>

Pathogen: Lingual wormwood.

Hazards: carp, crucian carp, silver carp, bighead carp, grass.

Symptoms: The sick fish has a large back and thin abdomen, and gently presses it with the hand, and has a hard feeling.

(1) Feed with a mixture of insects and feed 0.3 grams per kilogram of fish body weight per day for 6 days.

(2) 250g of pumpkin seeds are mixed into 1 kg of bean cake or rice bran for 10,000 fish species to be fed once a day for 3 days.

<b>6. Capillary worm intestinal disease</b>

Pathogen: capillary nematode.

Hazard objects: extensive.

Symptoms: It is more harmful to summer flower fish fingerlings, which can cause loss of appetite, emaciation of fish, and gradual death.

(1) 90% of the crystalline dimethopods are fed 5-7 grams of medicine according to 250 kg of fish fingerlings, mixed with human bait, and fed for 6 consecutive days.

(2) Treatment with Chinese herbal medicine. According to the total amount of 50 kg of fish medicine 290 grams (16 parts of Guanzhong, 5 parts of Tujingjie, 3 parts of Su Stem, 5 parts of Neem root mixed decoction), fed for 6 days, can kill the intestinal capillaries.