Chicken cecum hepatitis, also known as blackhead disease, is caused by trichomonas of the moratidae family, a protozoa disease of chickens and turkeys, the first feature of which is inflammation and enlargement of the cecal and enlarged liver, and the appearance of round, green or yellow-white necrotic ulcer lesions of different sizes. Cecum hepatitis is more rational and has a high mortality rate in young chickens. Adult chickens are also infected, but are generally insidious and mildly ill.
<h1 class="pgc-h-arrow-right" data-track="3" >, the route of infection</h1>
The first route of infection of the disease is the digestive tract. Sick chickens may excrete feces that may contain large amounts of spiny nematode eggs, which often contain larvae that arrange trichomoniasis, and when these excrement contaminates feed, drinking water, chicken coops and sports grounds, they will become infected after being ingested by healthy chickens. In addition, insects such as earthworms, flies, and crickets can also mechanically carry insects. The onset of this disease is not obvious in seasons, but there are more attacks in the warm and humid seasons of spring and summer.
<h1 class="pgc-h-arrow-right" data-track="23" > second, clinical symptoms</h1>
The incubation period of the disease is 15-21 days, the sick chickens show energy wilting, appetite loss, loose and lightless hair, sagging wings, body curled up, drowsiness, diarrhea, sick chickens excrete sulfur-colored feces, sometimes stool is pale green. In severe cases there is blood in the stool. Most sick chickens have purple-blue or black head skin, and if not treated in time, they can die in 1-2 weeks.
<h1 class="pgc-h-arrow-right" data-track="25" >3. Identification of similar symptoms</h1>
1. Tender Amy's ear coccidiosis
Clinical manifestations are high degree of anemia, emaciation, pallor of crown and meat mane, blood leakage and blood leakage from the cecal mucosa can be seen on autopsy, and there are no obvious lesions in the liver.
2. Heteroethra nematode disease
Autopsy may reveal enlarged cecal bowel, thickening of the intestinal wall, bleeding of the mucous membranes, ulcers, and see small nodules, and the contents of the intestine sometimes coagulate into strips, gray-purple; In the contents of the bottom of the cecum, adult worms can be found; There are no obvious lesions in the liver.
3. Chicken cecum hepatitis drain
Pale yellow stool, with bloody stools in severe cases, and the head of the sick chicken becomes blue-purple or black in the later stages; Characteristic lesions in the cecum and liver on autopsy are easy to identify.
<h1 class="pgc-h-arrow-right" data-track="26" >4</h1>
1. Isolate the sick chickens to disinfect the area around the farm, and use 3% sodium hydroxide to disinfect the chicken coop once a day for 3 days. Including the sterilization of the chicken coop with quicklime, the replacement of the chicken coop with new bedding, and the disinfection of the surrounding environment.
2, the selection of metronidazole (according to the therapeutic amount) drinking water for three days to five days, before use of the chicken first cut off the water for an hour, and then concentrated drinking water for eight hours, metronidazole use of excessive is easy to poison, so after using metronidazole with baking soda or liver and kidney kang drinking water to alleviate the kidney poisoning caused by medication.
3. The disease of metronidazole in the use of three days by farmers has been controlled from the previous 15 deaths per day to 3 to 4 per day, and the chickens are conditioned by rich vitamin feed and sub-health is lifted.
<h1 class="pgc-h-arrow-right" data-track="27" >5, prevention and management</h1>
1, the chicken coop should be kept dry, before entering the seedlings can be used to paint the inside and outside walls and floor of the chicken coop with lime water. Strengthen feeding management and ensure feed and drinking water hygiene. The chicken coop is regularly disinfected to ensure that the chicken coop is clean and dry, the chicken manure is removed in time, and the harmless treatment is carried out.
2. In the breeding, the chicken coop floor is regularly disinfected with disinfectant to disinfect the chicken coop bedding. When flocks need to be stocked outdoors, the farm should be disinfected with quicklime, especially after rain.
3. Use metronidazole (preventive amount) to deworm in the chickens at the age of 20 days to prevent the chickens from developing cecumcidohepatitis, and at the same time cooperate with a variety of vitamins to assist in treatment.