Phân lập và thử kháng sinh đồ vi khuẩn Pasteurella Multocida từ gà bệnh hoặc nghie mắc bệnh tụ huyết trùng

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Phong Vũ Anh Tuấn Võ

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học kỹ thuật Thú y, 2020

Mô tả vật lý: tr.31

Bộ sưu tập: Báo, Tạp chí

ID: 331081

Thêm vào giỏ Liên kết toàn văn

Nghiên cứu được thực hiện nhằm đánh giá tình hình bệnh tụ huyết trùng ở gà và tính mẫn cảm của vi khuẩn P. multocida đối với một số kháng sinh thường sử dụng trong phòng và trị bệnh hô hấp trên gà ở một số huyện của tỉnh Tiền Giang. 90 mẫu (gồm 3 loại mẫu bệnh phẩm máu tim, phổi và xương ống chân gà) đã được thu thập từ tháng 4 đến tháng 11 năm 2019, xét nghiệm mẫu được thực hiện tại phòng thí nghiệm trường Cao đẳng Nông nghiệp Nam Bộ. Kết quả nghiên cứu cho thấy tỷ lệ gà bị nhiễm bệnh tụ huyết trùng trung bình là 48,15%
tỷ lệ nhiễm bệnh của gà nuôi ở những trang trại quy mô nhỏ cao hơn so với gà nuôi ở trang trại quy mô lớn (p<
0,05) và tỷ lệ nhiễm bệnh của gà ở lứa tuổi từ 30 đến 60 ngày tuổi cao hơn so với gà ở các lứa tuổi khác (p<
0,05). Các chủng vi khuẩn P. multocida phân lập được từ các mẫu bệnh phẩm có độc lực cao (chiếm 83,33%), không có chủng nào là không có độc lực. Các chủng vi khuẩn P. multocida mẫn cảm cao với kháng sinh marbofloxacin (94,44%) và florfenicol (81,48%). Tuy nhiên, tỷ lệ các chủng vi khuẩn P. multocida đề kháng mạnh với amox+clavulanic acid (77,78%) và đề kháng ở mức vừa phải với doxycycline (44,44%).The study was performed to evaluate the situation of pasteurellosis in chickens and testing the antimicrobial susceptibility of P. multocida to some antibiotics commonly used in poultry respiratory disease prevention and treatment in some districts of Tien Giang province. Ninety samples including chicken heart blood, lung and fibula were collected from April to November 2019 and sample test was carried out at the laboratory of Nam Bo Agriculture College. The studied results showed that the infection rate of chicken with P. multocida was 48.15%
the infection rate of chicken raising in the small-scale farms was higher than that of the chickens raising in the large-scale farms (p <
0.05) and the infection rate of chickens at 30 to 60 days old was higher than that of the chickens in other age groups (p <
0.05). Moreover, the P. multocida isolates having high virulence accounted for 83.33%, no isolates was not virulent. The P.multocida isolates were highly susceptible to marbofloxacin (94.44%) and florfenicol (81.48%). However, the P. multocida isolates were strongly resistant to amox + clavulanic acid (77.78%) and moderate resistance to doxycycline (44.44%).

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