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(A) The clinical symptoms of mental atrophy, fluffy feathers, standing difficulties, lying in the ground, stretching neck mouth, issued a faint scream, some diarrhea, and some neurological symptoms, and soon died.
(B) necropsy changes in necropsy 8 dead chicks, 4 sick chicks, the lesions are basically the same, the liver is swollen, the surface is purple, there are scattered bleeding spots, heart and adventitia and coronal fat with bleeding points, crops The contents were filled with water and gas; glandular and gastric mucosal shedding, keratinocyte membrane dry, bleeding below the membrane, severe hemorrhage of the duodenal mucosa, and dark blood clots in the kidney.
(3) Based on the incidence, clinical symptoms, and changes in necropsy, it was initially diagnosed as drug poisoning. To further diagnose the cause of drug poisoning, the diseased chicken was sent to the laboratory of the County Animal Husbandry Bureau for further confirmation.
(D) laboratory tests due to the emergency condition of the disease, the laboratory technician according to the author's report, did not re-bacterial isolation and culture, the contents of the crop were directly dissolved in sterile distilled water, the test solution pH value of 8.6, was alkaline Sex (normal average pH is 5, acidic) Simultaneous aqueous solution test Na+ is present. Asked the owner about the breeding situation, he mentioned that he had used 8% NaOH to disinfect the poultry house before entering the chicks, so it was diagnosed as poisoning by alkali (NaOH).
(V) Treatment measures Immediately clean the floor of the house thoroughly, add a layer of dry fine sand, and drink a large group of 5% glucose water, vitamin C electrolysis, etc., and strengthen the body resistance with vitamin B1 and vitamin B12. . After 2 consecutive days of treatment, the flock tended to be stable, and the death was stopped. Feed intake and drinking water gradually returned to normal.
(6) Summing up the caustic soda, also known as caustic soda, chemical formula NaOH, has a strong killing effect on bacterial propagules, spores, viruses, etc. It is also effective in killing parasite eggs. However, viral infections such as Newcastle disease; the concentration of bacterial infections such as chicken fleas and fowl flu should be 2%. The concentration used by the farmers was far beyond the normal range. After the ground was sprayed to evaporate water, small particles of fire alkali were formed on the ground. Because of the feeding habits of the picky granules of the poultry, the young chicks died of poisoning after foraging; in the next step During the process, the author suggested that farmers should change the backward feeding methods as soon as possible, and use modern-scale breeding methods to continuously improve the breeding efficiency.
Pig farming with high quality forage
A farmer named Zhang Moxin of Linfen County, Shandong Province, purchased 2,500 broiler chicks. On the 12th, he began to have sporadic deaths. Lao Zhang thought that it was caused by heat stress during transportation and he did not pay much attention to it. As a result, on June 13th, the number of deaths increased greatly, with more than 180 deaths a day. Most of the dead and chicks were well-developed and robust.