lime spill, lobster traps zone depth of 1 meter per acre with 30-40 pounds

Data:2013/10/10 1:15:58

1. Grass Carp Hemorrhage
Major hazards age grass, herring. The main symptoms operculum, fin congestion red, peeling skin visible muscle spotty or massive bleeding, anatomical intestine. Visible annular wall hyperemia, bright red. Disease in temperature 25 "C the most popular, more than 30 namely weakened acute type in the short term so that the fish died I: 9 ()% or more.
Control methods:
(1) Artificial Grass Carp Hemorrhage injected vaccines can generate strong protection force specificity of hemorrhagic disease resistance can be maintained for at least 14 months.
(2) three Rhubarb (rhubarb, Scutellaria, Phellodendron the third) 605g mixed feeding 5 - 10 pounds 100 pounds of fish feeding, 5-7 days for a course of treatment.
(3) Ban Langen 70%, hard wood 30%. 1 kg of bait mixed with 100 kg of feed feeding fish. Once every six days.
(4) three yellow powder, bitter wood each half a catty, catty salt, mixed with 100 kg of feed feeding fish. Once every six days.
(5) bleeding Pa, for every 100 pounds of fish a two (50g) mixed feeding feeding for 3 - 5 days.
2: gill disease
The main symptoms of diseased fish mainly for the "open a window", that is the middle part of the epidermis opercular corrosion into a circular irregular transparent small window, accompanied by gill rot, white, with silt. Perennial visible disease, especially water temperature 20-30 "(2 height.
Treatment:
(1) bleach, use 1 gram per cubic meter of water spilled the entire pool.
(2) gall, with 2-4 grams per cubic meter of water spilled the entire pool.
(3) Strong Chlorine, with one gram per cubic meter of water spilled the entire pool; fish health, with 0.5 grams per cubic meter of water spilled the entire pool.
(4) Spirit of bait fish feeding and health, per 100 pounds of fish bait half a catty, three days for a course; or per 100 pounds of fish mixed with 25 grams of fish Kang feeding feeding. Even cast three days.
3. Enteritis disease
The main symptoms of diseased fish body surface especially the head black, abdominal swelling noticeable erythema. Protrudes from the anus swelling; abdomen cut open a lot of peritoneal fluid, intestines without food, full of yellow smelly mucus. May-June and September-October for the popular peak.
Treatment:,
(1) topical bleaching powder, strong chlorine spill and other drugs, dosage as before.
(2) 100 kg of fish per 1 kg of garlic, salt, 3 two, mixed feed fed, 5-6 days for a course of treatment. '
(3) per 100 kg of fish Changyanling 5 g or 50 g of allicin (one two), mixed feeding feeding, three days for treatment.
(4) per 100 kg of fish health Fish Spirit catty (250 grams) feeding, three days for treatment.
4. Red skin disease
The main symptoms of diseased fish scales on both sides of the abdomen or off, red skin and muscle inflammation hyperemia, fin end rot. '
Prevention:
(A) transport, stocking process, the operator should be careful not allow fish injury.
(2) prior to stocking fingerlings 3-4% salt water immersion for 5 minutes.
Treatment:
(1) topical TCCA or fish health, bleach spill, the same amount of gill disease.
(2) Oral health of fish or fish Kang Ling, TCCA. Dosage: for every 100 pounds of fish health Fish Spirit catty (250 grams), or 25 grams of fish health, TCCA 60 grams (one two), mixed feeding feeding.Three days a course of treatment. . .
5. Saprolegniasis
The main symptoms of diseased fish body surface manifestations long "white hair", was cotton wool, the disease can occur throughout the year, especially in early spring, late winter the most popular.
Prevention:
In capture, transport and stocking operations carefully, rendering fish injury.
Treatment:
(1) Quanchiposa bleach (chlorine 28-30%), cubic meter of water used is 1 g, for 3 consecutive days.
(2) 4% salt water immersion diseased fish 10 minutes for 3 consecutive days.
6. Bald white mouth disease
The main symptoms of diseased fish head or around the mouth pigmentation disappeared, was white.Seriously diseased fish, rot lesion site, slow, outliers travel alone, if not treated can cause cross contamination large number of deaths. It is a common fry stage fulminant fish, especially carp fry the most serious hazards. The disease generally 5 - 7 the monthly prevalence.
Treatment: with gill disease.
7. Outbreaks of fish disease
The main symptoms of diseased fish head, eyes, gill cover skin, skin and fin congestion, some fish muscle hyperemia, anal redness. The disease usually occurs in March to November, the peak period of 6-8 months, the mortality rate of 50-90%. Endanger the silver carp, bighead carp, crucian carp and so on.
Treatment:
(1) lime spill, lobster traps zone depth of 1 meter per acre with 30-40 pounds.
(2) per 100 kg of fish with 100 - 125 g (2-2.5 two) fish served Kang, mixed feed fed once a day, and even served three days.
(3) per 100 kg of fish 50 grams (one two) fish Shenfuning (formerly known as fish SxS) mixed feeding feeding, Once a day, and even served three days. •
8, Ichthyophthirius
Pathogen Ichthyophthirius larvae or cost. Incidence of fish body surface with white spots, white spots in the mouth there, do not eat diseased fish can pandemic and outbreaks. Treatment first with 3% salt water soak for 10 minutes, then with 2 5ppm-50 ppm formalin bath, 1 day, 2-3 times as a course of treatment.
9, hemorrhage
Because fish injury caused by bacterial fish diseases, diseased fish swim alone outliers surface manifestations of multiple congestion, increased mucus, caudal defect. Control methods: Bag with bleach or spill, once every 2-3 days, or rhubarb and other traditional Chinese medicine made bait, fed at 0.3% addition of 3-5 days. 10, the vertical scale disease
Caused by bacteria, disease ichthyosis tablets erected, and the phenomenon of fin rot, fin base congestion, abdominal swelling. Control methods: dragnet, transportation, binning and other operations, to avoid fish injury, disease, the use of 2% plus 3% sodium bicarbonate mixed salt solution immersion diseased fish for 10 minutes.
11, streptococcal disease
(A) pathogen. Streptococcus agalactiae is the leading cause of tilapia, tilapia can cause a lot of deaths.
(2) clinical features
Normal behavior: As streptococcal disease fish of the central nervous system may be infringed, it is abnormal clinical manifestations of disease fish swimming, lethargy, often swim slowly in the water without direction, sometimes the body flexion.
Eye injury: sick fish often appear whitish eye symptoms such as eye sclera, proptosis and bleeding, but not all diseased fish eye symptoms have appeared.
Necrosis caseous abscess: Sometimes in diseased fish cheeks appear on both sides of 2-3 mm before caseous necrosis lesions, followed by necrosis rupture to form ulcers, may be even greater in the caudal fin base (10-20 mm) necrosis stoves. Necrosis is a cheese-like pus inside nature, if diseased fish rehabilitation, long-term retention of this lesion will.
Skin bleeding: a common cause of strep tilapia body surface bleeding, manifested in the mouth around the base of the fin spotting, sometimes in the anal or genital opening presents around the bleeding spots.
Ascites: tilapia acute streptococcal disease commonly have a large number of intra-abdominal ascites due to ascites increased, causing anal prominent.
(3) anatomical lesions
Gastrointestinal disease, gallbladder significantly enlarged, some several times larger than the normal size. Sepsis, acute infection, extensive bleeding occurs visceral and liver, spleen, kidney, heart, brain, eyes and intestines of a large area of bleeding, swelling of the spleen and kidneys.Peritonitis, a serious infection, symptoms of severe peritonitis diseased fish performance, all the internal organs and surrounding tissue adhesion, there are a lot of fibrous peritoneal exudate.
(4) diagnostic methods
Field Diagnosis: According to the above described clinical symptoms of diseased fish for 5-10 careful on-site inspection, the visceral organs smear, Gram stain and then under the microscope examination of Gram-positive cocci will be able to diagnose the disease.
Laboratory diagnosis: In the laboratory and bacteriological Pathogen Identification of Streptococcus species can be determined.
(5) Prevention
Reduced feeding: When streptococcal disease outbreak, reduce bait feeding can reduce sick fish mortality. The reason is to reduce the amount of fish eating fish can reduce the chances of infection healthy.
Lower stocking densities: When the disease occurs, first appeared dead, they should lower stocking densities reduce stress factors and the spread of diseases opportunity to help reduce the death of fish and reduce losses. Cure: drug therapy only in the lotus bacteria outbreaks early application to be effective, because the infected fish is hardly expected to eat, reach therapeutic effect, only those not infected, but also normal eating fish can play a preventive effect.
Quanchiposa bleach (chlorine 28-30%), the amount of 1 g / m 3 Water bodies, while for every 100 kilograms of fish a day with oxytetracycline 2-8 grams, or sulfamethyldiazine bait mixed feeding, feed 5-7 days.