Egg Brother purpose: use the most simple language to help chicken friends, improve the chicken production technology, and solve substantive problems.
Avian trematodiasis, commonly known as "egg leech disease", is a parasitic disease that parasitizes the reproductive tract, bursa and cloaca of layer chickens. The disease is endemic regionally, with more common occurrences in the southern regions. Clinically, it often causes laying hen salpingitis, egg laying dysfunction, peritonitis, which seriously affects the egg production rate and egg quality of layer chickens.
<h1 class="pgc-h-arrow-right" data-track="114" >, pathogenesis characteristics</h1>
The epidemic of this disease is very much related to freshwater snails and dragonflies, and the incidence season is consistent with the season of dragonflies, the incidence area is more in Hubei, Hunan and Jiangsu, and jilin, Liaoning and Shandong also occurs from time to time, and the incidence field is close to the shore of the ditch.
<h1 class= "pgc-h-arrow-right" > ii. Clinical symptoms and anatomical lesions</h1>
In the early stage, the spirit and feeding of sick chickens were normal, and it can be seen that shellless eggs and soft shell eggs have increased, and egg production has decreased. With the development of the disease, the feeding intake of the sick chickens decreased, the drinking water increased, and the white lime-like thin feces was discharged, and the cloaca was prominent. The sick chicken has a bulging abdomen, a painful touch, a gait disorder, and a posture like a "penguin".
Anatomy of a dead chicken can be seen, the mucosa of the fallopian tubes is hyperemic and thickened, and there are densely packed sesame grain-sized, pale yellow to milky white insect bodies, which are embedded in the mucosa of the uterus and are not easy to peel off. Some sick and dead chickens have large amounts of yellow exudate or pus in the abdominal cavity.
<h1 class= "pgc-h-arrow-right" > third, preventive measures</h1>
(1) Stay away from water
Farms should be kept away from water to avoid flocks of chickens gathering near the water to prevent infection due to predatory dragonflies. For farms with nearby ponds, disinfectants such as copper sulfate and sodium hypochlorite can be added during the epidemic season to cut off the development of the larvae.
(2) Disinfect water quality
During the season of high incidence of the disease, the drinking water is disinfected with acidulants, and the drainage facilities around the chicken coop are cleaned and disinfected to eliminate possible pathogens.
(3) Strengthen management
Window screens and screen doors are installed at the entrance and exit of the chicken coop to prevent dragonflies and other transmission media from flying into the chicken coop and cut off the transmission route; at the same time, the feces are concentrated on piling up to kill pathogens such as insect eggs in the feces.
(4) Advance deworming
In the rainy season, that is, the high incidence season, preventive deworming is carried out in advance, and it is recommended to rotate the use of propylthionazole and praziquantel for deworming at the age of 95 days, 115 days and 135 days of age, once a month.
<h1 class = "pgc-h-arrow-right" > fourth, therapeutic drugs</h1>
Once the chickens become ill, the sick chickens are isolated in time, the chicken coops and waterlines are cleaned and disinfected, and then the drugs are used to deworm.
Young chicken medication: use propiobenzidazole, according to 80-100mg/kg body weight, disposable internal administration; or use praziquantel, according to 30-50mg/kg body weight, disposable internal administration. At the same time, the medication is combined with cod liver oil to repair the damaged mucous membranes.
Egg-laying hen medication: choose anthelmintic drugs containing betel nut, guanzhong and other ingredients, combined with thistle, wormwood and other hemostatic herbs to promote recovery.
Warm tips: During the onset of the disease, it is necessary to clean up the feces in time every day and do a good job of harmless treatment.
The above are the pathogenesis characteristics, symptoms, preventive measures and therapeutic drugs of chicken prefoliosis.
Veterinarian: Enrofloxacin + trimethoprim, known as "golden oil", prevention and control of 4 major types of diseases in chicken farms