Bệnh phó thương hàn vịt (Salmonellosis) là bệnh truyền nhiễm do vi khuẩn Sallmonella gây ra, vịt mọi lứa tuổi đều cảm nhiễm với bệnh, tuy nhiên triệu chứng lâm sàng thường chỉ thấy ở vịt con dưới 3 tuần tuổi, vịt lớn mắc bệnh thường ở thể mãn tính.

Đặc điểm bệnh

Bệnh thường xảy ra ở vịt con giai đoạn 3 đến 15 ngày tuổi cả vịt lớn và vịt đẻ. Vịt đẻ nhiễm bệnh, vi khuẩn nhiễm vào trong trứng, khi vịt nở đã bị nhiễm trùng. Vi khuẩn xâm nhập vào cơ thể chủ yếu qua thức ăn, nước uống và khi điều kiện ngoại cảnh bất lợi làm cho vịt yếu và bệnh phát ra.
Triệu chứng cơ bản

• Vịt ủ rũ, mắt bị nhem, xệ cánh, ít vận động.
• Tiêu chảy phân loãng xanh lá cây, lẫn bọt khí.
• Một số con bị bại chân, viêm phổi thở khò khè.

Bệnh tích

• Gan sưng, lấm tấm những nốt vàng trắng.
• Túi mật sưng, niêm mạc dạ dày tuyến (cuống mề) sưng, phủ lớp chất nhầy.
• Ruột sưng, xuất huyết, đôi khi bị loét.
• Vịt đẻ thường ở thể mãn tính, xác gầy ốm, buồng trứng xuất huyết đỏ, trứng non biến dạng.

Phòng bệnh

• Chuồng trại khô, sạch, ấm, thoáng.
• Vịt con trên 7 ngày mới tập cho ăn mồi.

Điều trị

• Trộn một số loại kháng sinh cho vịt ăn hoặc uống từ 3 – 5 ngày liên tục sau khi mua về và lập lại sau 7 ngày. Các thuốc kháng sinh dùng phòng và trị bệnh như BTV - Doxtin, BTV - Flor 45%…và kèm theo thuốc bồi dưỡng BTV - Kháng thể E.Coli (Dạng bột mịn), BTV - Gluco K.C thảo dược, men tiêu hóa BTV - Bacilcoli.

Xem thêm: Phòng và trị dịch tả ở gà, Cách phòng và trị bệnh E.Coli ở gà hiệu quả

Nguồn: http://biotechviet.vn/dieu-tri-benh-pho-thuong-han-tren-vit-T34d0v4395.htm

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