Egg Brother's purpose: to use the most simple language to help layer farmers share experience, high yield technology, and solve substantive problems.
Chicken pox (AP) is an acute contact infectious disease caused by chicken pox virus (AV) characterized by acne rashes on the skin that are glabrous or hairless, or that form a fibrous necrotizing pseudofilm on the surface of mucous membranes such as the mouth and throat. The disease is distributed worldwide, occurring sporadically every year after the beginning of summer, and endemic after entering the autumn. Once a large chicken farm falls ill, it can cause more chickens to fall ill and die, and the losses caused to the chicks are more serious, bringing no small economic losses to the chicken industry.
<h1>
First, the characteristics and harms of chicken pox
</h1>
The disease can occur all year round, especially in the spring and autumn, when mosquitoes are active in chicken farms. Chickens of all kinds of day-old and breeds can be infected, and the incidence of chicks and young chickens is high, often resulting in large numbers of deaths, the uniformity and weight of chick flocks are affected, and the egg production of laying hens is reduced or stopped.
The scabs shed by sick birds contain a large number of pathogens that can contaminate feed, drinking water, utensils, air, and then infect healthy chickens through the digestive tract and respiratory tract. In addition, the disease can also be infected by blood-sucking insects such as mosquitoes, mites and mechanical factors, and mosquitoes play an important role in the transmission of this disease.
Second, what are the symptoms of chicken pox?
1. Skin type
The diseased chicks have decreased appetite, weight loss, death is more serious, and the egg laying rate of laying hens is temporarily reduced. The surface of the sick chicken is hairless or hairless, especially the crown, meat droop, eyelids and corners of the mouth, but also under the wings, around the cloaca cavity, etc., acne rash, some are scattered small nodules, some small nodules fused into large nodules, this is a typical feature. The scab protrudes from the surface of the skin, which is uneven, hard and dry, and begins as a small gray-white nodule, and then increases rapidly in size, such as a pea-sized, gray-yellow nodule. If the pox grows on the eyes, tears, fear of light, and even blindness, also known as "eye-shaped chicken pox".
2. Mucosal type
Sick chickens have difficulty breathing, like "passing throats" to stretch their necks and open their mouths to breathe, making a "quacking" sound, difficulty swallowing, and even suffocation to death. On autopsy of sick and dead chickens, a yellow-white cheese-like pseudofilm can be seen on the surface of the mouth, esophagus or trachea, and it can be peeled off to show bleeding and erosion. The pseudofilm gradually enlarges and thickens, forming scabs that block the throat and cause breathing and swallowing disorders in the sick chickens.
3. Hybrid type
Mixed type is the surface of the body skin and mucous membranes are invaded by acne rash, the condition is severe, the mortality rate is high, some conjunctivitis, visceral punctate bleeding, muscle pallor visceral chicken pox.
<h1>3. How to distinguish it from other viral respiratory diseases? </h1>
(1) Chicken pox: epidemic disease in summer and autumn, which is harmful to chicks and young chickens, characterized by acne rash in the hairless or hairless part of the skin of sick chickens, or the formation of fibrous necrotizing pseudomembrane on the surface of mucous membranes such as mouth and throat.
(2) Chicken throat transmission: mainly endanger young chickens and adult laying hens, the disease is fast, the sick chicken opens its mouth and stretches its neck, "coughs up blood", elongates the sound, strange screams, commonly known as "back and forth", laryngeal bleeding.
(3) Chicken leukocyte protozoa disease: epidemic in summer and autumn, there are traces of mosquito bites on the crown of chickens, needle-like bleeding points, and small hematomas and bleeding spots on internal organs such as heart crown fat, mesentery, pancreas and fallopian tube membranes of sick and dead chickens.
4. How to prevent and treat chicken pox with Chinese and Western medicine?
1. Chicken pox prevention program
(1) First of all, improve the breeding environment of the flock, prevent mosquitoes, remove weeds around the chicken coop in time, and regularly use high-efficiency and low-toxic insecticides such as cypermethrin to kill mosquitoes and reduce the chance of mosquitoes around the chicken coop. At the same time, install screens and curtains in doors, windows, ventilation and exhaust holes to prevent mosquitoes and flies from entering the chicken coop, and check and repair cages and other equipment to avoid scratching the skin of chickens.
(2) Secondly, at present, the prevention of chicken pox mainly relies on vaccine immunization. In high-incidence areas and high-incidence chicken farms, the chickens were 10-20 days old for the first time to stab immune chicken pox seedlings, and the seeds were planted in the bloodless parts of the glabrous triangle on the inside of the wings, with 1.5 parts per chicken. In addition, in order to prevent the onset of the epidemic season, the chicken pox seedlings are immunized again in June and July. If there is mung bean-sized swelling or scab at the thorn site after 3-5 days of vaccination, and the scabs fall off after 2 to 3 weeks, it indicates that the immunization is successful; otherwise, the immunization fails, and it must be re-vaccinated.
Attention to stinging immunization: (1) The prepared vaccine is used up within 1 hour, and the longest is not more than 2 hours. (2) The liquid in the vaccine bottle has not passed through the needle slot, and the needle is immediately seeded after it is removed from the bottle. (3) Remove the feathers on the needle in time to ensure that the dose is accurate. (4) The used seed injection and vaccine bottle are soaked in glutaraldehyde + decyl methyl bromide disinfectant solution for 30 minutes to kill the residual virus.
2. Chicken pox treatment recommendations
(1) Chicken farms with sporadic and low mortality rates
First, 2-3 times the amount of interferon antiviral, with transfer factors to enhance immunity. Secondly, the selection of Chinese medicines containing plate blue root, large green leaf, andrographis and other traditional Chinese medicines to detoxify, antibacterial and anti-inflammatory, continuous use for 4-5 days to prevent secondary infection. Sick chickens are eliminated, and sick and dead chickens are buried deep or burned. At the same time, insist on daily disinfection with acidic or alkaline disinfectant (2% fire alkali) with chicken disinfection.
(2) Chicken farms with many serious diseases
Healthy chickens urgently sting chicken pox seedlings, starting from away from the sick flock, until the diseased chicken flock, chicks with 2-3 times the amount of chicken pox emergency vaccination, laying chickens with 3-5 times chicken pox emergency vaccination. At the same time, it is combined with transfer factors and cod liver oil to promote mucosal repair and enhance immune effect. After 24 hours of immunization, the chickens are sterilized with 2% fire alkali or sodium hypochlorite, and the chickens are disinfected every day thereafter.
Egg networking, set chicken farm management, egg mall, finance as one, for the poultry egg industry to provide a full range of services. Intelligent management of chicken farms, save time and effort, and improve breeding efficiency!