Chicken head lesions and corresponding diseases

2020-08-19

Qingdao Zhongren Animal Medicine Co., Ltd

Zhongren kinetic drug

Chicken head lesions and corresponding diseases

1. head and neck tremor: possible diseases have

1. Encephalomyelitis: highly contagious, with concentrated incidence, mostly in chicks. There was obvious brain edema in autopsy, and vascular sleeve formation in brain section microscopy.

2. Vitamin E deficiency: non-infectious, mostly sporadic, more common in laying chicks and broilers. Severe lack of liquefaction of the occipital lobe of the brain, broilers can be manifested as head and neck tremor, regression and other ataxia performance, and even head and neck paralysis, cold, lying on the ground.

3. E. coli or Salmonella encephalitis: low infectivity, mild tremor in the head and neck, drowsiness with closed eyes. The cerebellum was necropsied with bleeding spots.

4. Bursal disease.

2. cockscomb, meat beard and facial white pimples or scabs, for chicken pox. Severe cases of upper and lower eyelid adhesions, and easy to secondary staphylococcus, Borella ophthalmia.

3. cockscomb, flesh beard swelling purple, and even bleeding, facial swelling, autopsy head subcutaneous edema, jelly-like exudation, for the typical characteristics of avian influenza. If it only shows swelling, it may also be swollen head syndrome caused by pulmonary virus infection. Laying hens with chronic cholera sometimes have swollen meat drooping, cut open meat drooping purulent blood outflow.

4. facial suborbital sinus, sinus swelling, purulent nasal discharge for infectious rhinitis. Only the inferior orbital sinus swelling, it may be mycoplasma or combined infection with rhinitis.

5. beak soft, rickets. It may be related to vitamin D or calcium deficiency.

6. chicks have upper beak and lower hook, short skull, more hairy eggs in the late incubation period, and their chick embryos are not dead. Associated with manganese deficiency in seed eggs.

7. large-day-old broilers or young laying hens with exophthalmos is a sequelae of encephalomyelitis.

8. chicken tongue dark black, vitamin B5 deficiency, commonly known as black tongue disease.

9. Eyes

1. E. coli caused by the whole eye inflammation: due to the corneal under the accumulation of pus, so that the pupil was uniform Milky White.

2. Marek's disease of the eye: the edge of the pupil is white and the edge is not whole.

10. cockscomb ruddy, hypertrophic erect

1. If it is an adult layer, it should be considered.

[1] Ovarian tumor: due to the high level of estrogen secreted by tumor tissue, the secondary sexual characteristics of chickens are more prominent, but the body is often thinner.

[2] Cock's comb erection hypertrophy: the specific etiology is unknown, may be related to zearalenone poisoning. Manifested as ovarian enlargement without follicle formation, tubal development is good, but the uterus, vaginal edema, congestion, tubal wall thickening.

[3] Sequelae of infectious bronchitis: normal ovarian development, dysplasia or atresia of fallopian tubes, partial development.

Eleven, mouth, neck breathing

1. Laryngotracheitis: severe bleeding in the trachea with blood strips. Severe blood strip blockage and death or the formation of tracheal pseudomembranes. Mild symptoms only show laryngeal punctate hemorrhage, tracheal mucosa thickening, yellow, touch the smooth feeling.

2. Diphtheria fowlpox: larynx to the posterior tracheal mucosa to form pox spots protruding from the mucosal surface, with flesh-colored and smooth surface in the early stage. In the later stage, the acne spot ulceration can form a scab.

3. Bronchial embolism caused by infectious bronchitis or influenza combined with multiple bacterial infections.

4. Pulmonary hemorrhage, abscess, flesh change and consolidation caused by avian bacillus in rhinotracheitis.

5. Aspergillus pneumonia in chicks: large nodules from many rice grains to mung bean grains are formed near the lung hilum.

6. The environment is too dry caused by foreign body airway blockage.

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