Nghiên cứu một số triệu chứng lâm sàng và đặc điểm bệnh lý của gà mắc bệnh viêm phế quản truyền nhiễm (IB)=Study on some clinical symptoms and pathological characteristics of chickens suffering from infectious bronchitis (IB)

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Tác giả: Lâm Huy Chu, Thị Mai Lan Đặng, Thị Lan Hương Phan

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học kỹ thuật Thú y, 2024

Mô tả vật lý: tr.9

Bộ sưu tập: Metadata

ID: 486333

Thêm vào giỏ

Kết quả điều tra, theo dõi 41.889 con gà cho thấy có 7.391 con mắc bệnh viêm phế quản truyền nhiễm (IB) với các biểu hiện chính: sốt, ủ rũ, giảm hoặc bỏ ăn (94,14%)
vẩy mỏ, hắt hơi (81,17%)
khó thở, thở khò khè, há mồm thở (81,77%)
âm rít khí quản (75,40%). Các triệu chứng khác như: chảy nước mũi, chảy nước mắt, viêm kết mạc mắt, mũi, sưng phù đầu, tiêu chảy, phân loãng nhiều nước chiếm 19,19% - 54,80%.Từ những con gà có biểu hiện lâm sàng như trên, chúng tôi tiến hành mổ khám kiểm tra bệnh tích đường hô hấp, thận, niệu quản của gà và đã xác nhận: khí quản xuất huyết, có dịch nhày (93,10%)
phổi xung và xuất huyết, tụ huyết, hóa mủ (82,76%)
viêm túi khí, túi khí đục (63,79%)
viêm kết mạc mắt (57,76%)
viêm xoang mũi (50,86%)
sưng và xuất huyết thận (46,55%) và tích urat ở niệu quản (30,17%). Sau đó, tiến hành làm tiêu bản và quan sát vi thể, kết quả là 100% thâm nhiễm tế bào viêm ở khí quản, phổi và thận. Biểu mô khí quản xung và xuất huyết, niêm mạc bị thoái hóa, long tróc chiếm tỷ lệ 100%. Phổi có hiện tượng xuất huyết làm các phế nang giãn rộng
các biểu mô phổi bị thoái hóa, bong tróc kèm theo tăng sinh các tế bào xơ ở vách phế nang và xuất hiện nhiều tế bào viêm chiếm tỷ lệ 100%. Cầu thận giãn to (100%). Các biến đổi khác ở phổi, thận, túi khí chiếm tỷ lệ từ 30,00 - 80,00%.Results of investigation and monitoring of 41,889 chickens showed that there were 7,391 chickens suffered from infectious bronchitis (IB) with the main symptoms, included: fever, lethargy, reduced or no appetite (94.14%)
beak flaking, sneezing (81.17%)
difficulty breathing, wheezing, open mouth for breathing (81.77%), tracheal whistling sounds (75.40%). Other symptoms such as: runny nose, watery eyes, conjunctivitis of the eyes and nose, head swelling, diarrhea, watery stools (19.19 % - 54.80%).From the above clinical manifestations, we conducted chicken autopsy to check lesions in the respiratory tract, kidneys, ureters, and confirmed: tracheal hemorrhage, mucus (93.10%)
pulmonary congestion and hemorrhage, hematoma, pus (82.76%)
air sac inflammation, cloudy air sacs (63.79%)
conjunctivitis (57.76%)
sinusitis (50.86%)
kidney swelling and bleeding (46.55%)
and had urate accumulation in the ureters (30.17%). Then histopathological specimens were made and observed, as a result: 100% inflammatory cell infiltration in the trachea, lungs and kidneys. The tracheal epithelium was swollen and hemorrhaged, and the mucosa was degenerated and sloughed off at a rate of 100%. The lungs had hemorrhage phenomena causing the alveoli to expand
the lung epithelium was degenerated and sloughed off, accompanied by proliferation of fibrous cells in the alveolar walls and appeared many inflammatory cells at a rate of 100%. Glomeruli were enlarged (100%). Other changes in the lungs, kidneys, and air sacs accounted for 30.00% - 80.00%.

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