Identification and Prevention of Newcastle Disease in Pigeon
[etiology] also known as pigeon type I paramyxovirus disease, is a viral infectious disease (paramyxovirus type I virus), transmitted through contaminated feed, drinking water, pigeon utensils, and the clothes, shoes and hats of people who come into contact with diseased pigeons.
[symptoms] the initial symptoms are fluffy feathers, lethargy and loss of appetite. Paroxysmal spasm, one or both wings drooping, paws paralysis, head and neck twisted, head back, yellow-green watery feces, feces around the anus. Dyspnea, conjunctivitis or ophthalmitis, and nasal secretions can also be seen.
Anatomical lesions will find cerebral congestion, a small number of bleeding spots, and parenchymal edema. There is striped bleeding at the intersection of the esophagus and glandular stomach. Small intestinal mucosal congestion, bleeding, ulcer foci, cloacal congestion. Hepatosplenomegaly, bleeding spots in the liver, pale and enlarged kidneys. Pay attention to the difference between the diagnosis of this disease and pigeon paratyphoid and pigeon cholera, and whether there are complications.
[prevention and treatment] at present, there is no special treatment, only intramuscular injection or subcutaneous injection of type I paramyxovirus inactivated vaccine subcutaneous injection for prevention, the dose of 0.5 ml each, the second enhanced immunity. Therefore, to prevent the disease, we should pay attention to the invasion of foreign pathogens and introduce pigeon species from non-epidemic areas.
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Pet rabbit breeding method
Although collectively referred to as rabbits, pet shops generally sell rabbits that are bred from wild burrows. There are many varieties, the most familiar is the white Japanese white species, in recent years the market has gradually increased the number of rabbits with other fur colors, but also very popular. There is also a breed called mini rabbit, which is not a real mini rabbit, but a breed of small rabbits such as Dutch and Belgian breeds crossed with white Japanese rabbits. What you see in the store is a baby rabbit, which must grow bigger. Only Belgium, as pure blood
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Silkworm rearing techniques
At present, the silkworm eggs producing silk reeling raw material cocoons are binary hybrids or multiple hybrids, and the technical treatment is roughly the same. Reasonable protection of silkworm eggs and appropriate methods of collecting ants play an important role in the growth and development of silkworms. 1 seed: in the morning or evening when the temperature is low, it is appropriate to prevent the sun or rain, pay attention to ventilation, do not pile up. 2 rejuvenation of silkworm eggs: after the silkworm eggs are brought back from the silkworm farm station, they should continue to be protected in a proper environment
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