MỘT SỐ ĐẶC ĐIỂM BỆNH LÝ, LÂM SÀNG BỆNH ĐẦU ĐEN Ở GÀ NUÔI TẠI THÁI NGUYÊN

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Tác giả: Văn Nghiệp Đặng, Thị Hà Đỗ, Văn Bình Nguyễn, Thị Tính Trương

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2023

Mô tả vật lý: tr.28-34

Bộ sưu tập: Metadata

ID: 333164

Thêm vào giỏ Liên kết toàn văn

Để xác định một số đặc điểm bệnh lý, lâm sàng và sự thay đổi chỉ tiêu máu ở gà bị bệnh đầu đen nuôi tại Thái Nguyên, chúng tôi đã tiến hành mổ khám và kiểm tra 872 gà. Kết quả cho thấy: Tỷ lệ gà mắc bệnh đầu đen do đơn bào Histomonas meleagridis (H. meleagridis) là 18,69%. Gà bệnh có triệu chứng lâm sàng chủ yếu ủ rũ, lông xù, đứng run rẩy, mắt nhắm nghiền, rúc đầu dưới cánh
gà sốt cao ≥ 43oC, uống nhiều nước, da đầu và mào nhợt nhạt hoặc xanh đen, ỉa chảy phân loãng màu vàng lưu huỳnh. Bệnh tích: manh tràng sưng to
niêm mạc manh tràng xuất huyết, hoại tử
Chất chứa trong lòng manh tràng màu vàng nâu, đặc quánh hoặc đóng kén rắn, màu trắng
gan sưng to gấp 2 - 3 lần, bề mặt gan có nhiều ổ hoại tử lõm, hình tròn không đều, ổ hoại tử trông giống hình hoa cúc. Gà mắc bệnh đầu đen có số lượng hồng cầu, hàm lượng huyết sắc tố và thể tích trung bình của hồng cầu giảm
số lượng bạch cầu, tiểu cầu tăng
tỷ lệ bạch cầu trung tính giảm, tỷ lệ bạch cầu ái toan, bạch cầu lympho và bạch cầu đơn nhân lớn đều tăng.In order to identify some clinical, pathological characteristics and hematological changes in chickens which have blackhead disease raised in Thai Nguyen province, we dissected 872 chickens. The result of post mortem and examinations on 872 chickens showed that: On average the morbidity rates of blackhead disease caused by Histomonas meleagridis (H. meleagridis) was 18.69%. The main clinical symptoms of diseased chickens are moving more slowly, standing up with ruffled feathers, dropping wings, their heads hide under their wings, clossing their eyes, having high temperature to 43oC and more, drinking a lot of water, skin of the face and comb was pale or dark blue color, sulfur-yellow colored droppings. Lesions: enlargement of caeca with hemorrhagic and necrotic mucosa. Development of yellowish brown caseous exudate, in later stages, a white, dry and cheesy core. Enlargement of liver by 2 or 3 times with irregular - round depressed lesions, necrotic ulcers of liver look like of chrysanthemum flower shape. Blackhead disease diseased chickens have number of erythrocytes, the content of hemoglobin and average volume of erythrocytes decrease, number of leucocytes, thrombocytes, the rate of neutrophils, lymphocytes and monocytes also increase.

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