A farmer in Luan City raised 3200 chicks (30 days old) and suddenly died. More than 30 had died. According to the farmers, due to the abnormal weather, the chicks showed typical respiratory symptoms. The family had given tylosin, cold granules for human use, and Banlangen granules to the chickens, which reduced the respiratory symptoms but caused sporadic deaths. At the same time, the feed intake of chickens generally declined, and obvious snoring could be heard.
Clinical symptoms: Depressed, drowsy eyes, drooping wings, dry, dull paws, row of white feces, grunting tone gradually worsened, and the chicks died 3 days after onset.
Changes in necropsy: Death-death chickens showed a slight bleeding spot in the glandular and gastric mucosa; a bleeding zone at the junction of the muscle stomach and glands and stomach; a kidney in the formation of spotted kidney with urate deposition; and rectal band bleeding was particularly severe; The capsular atrophy, there is a small amount of mucus, there is a small amount of needle-like size bleeding on the mucosa; throat swelling, congestion; chest muscles, leg muscles have streaked bleeding. The above symptoms are diagnosed as kidney-type transmission complicated by bursal disease.
Treatment: 1. Jindu anti-(1 bag/day) + French gram powder (3 bags/day) to drink water. 2. Fast-acting renal branches (3 bags/day). 3. Appropriate feeding of electrolytic multidimensional (Webster-dimensional ammonia) enhances the body's resistance. The above-mentioned drugs were used for 3 days. On the fourth day, the death of the chicks ceased and the stools returned to normal.
Experience: the diagnosis of kidney-based transmission of the most important is the main respiratory symptoms in the early stage, 3-5 days after the gradual disappearance, followed by mental depression, dry diarrhea, eventually leading to death. At the same time, during the necropsy, swelling of the bursa of Bursa's bursal was found, atrophic hemorrhage occurred in some cases, and there were inflammatory secretions. This is a typical symptom of bursal disease.
Recommendation: Do not use drugs for humans, especially for the whole group, which can easily cause group poisoning. In order to reduce the burden on the kidneys, the feed structure can be properly adjusted, the proportion of protein feed can be reduced, and the energy feed can be increased, which can have a good preventive effect.
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