Sự lưu hành của porcine circovirus type 2 trên lợn nuôi tại một số trại thuộc huyện Nam Đàn và Yên Thành, tỉnh Nghệ An=Prevalence of porcine circovirus type 2 in swine populations in Nam Dan and Yen Thanh district, Nghe An province

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Tác giả: Hải Phan Vũ, Nguyễn Xuân Hòa, Hưng Phạm Hoàng Sơn, Tài Đinh Văn, Dương Tất Thắng

Ngôn ngữ: vie

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Thông tin xuất bản: Tạp chí Khoa học kỹ thuật Thú y, 2018

Mô tả vật lý: tr.10

Bộ sưu tập: Metadata

ID: 498307

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Porcine circovirus type 2 (PCV2) is a wide spread, important pathogen of domestic swine and the causative agent of post-weaning syndrome and other diseases, known as "porcine circovirus diseases". The objective of this study was to evaluate the prevalence of infection with porcine circovirus-2 (PCV-2) in the post-weaning pigs in 6 communes of Nam Dan and Yen Thanh district, Nghe An province. Result of analyzing 93 samples collected in 2015 by Real time PCR technique showed that all of the investigated communes were infected by PCV2 with an average infection rate of 23.7%. Of which, Hoa Thanh commune accounted for the highest prevalence (29.4%), followed by Phu Thanh and Nam Anh commune (25.0%). The rate of positive samples with PCV2 collecting from pigs with and without symptom of the typical respiratory diseases was 25.0% and 22.2%, respectively. Samples collected from oral cavity, serum and innards were positive with PCV2 to be 23.7%
22.7% and 24.2%, respectively. Therefore, in order to diagnose PCV diseases, apart from common methods of serum and innards collection, sample collecting from oral cavity is also an effective method. This result seems to be meaningful for the subsequent studies on the prevalence of PCV2 in Nghe An province and for the prevention of diseases caused by PCV2 in the swine herds in Viet Nam.Porcine Circovirus type 2 (PCV2) là một mầm bệnh truyền lây và là tác nhân gây bệnh quan trọng trên lợn gây nên hội chứng sau cai sữa và các bệnh khác được gọi là "bệnh Circovirus lợn”. Nghiên cứu này được thực hiện nhằm xác định tình hình nhiễm PCV2 ở đàn lợn nuôi tại 6 xã thuộc huyện Yên Thành và Nam Đàn, tỉnh Nghệ An bằng kỹ thuật Real time PCR với tổng số 93 mẫu bệnh phẩm. Kết quả nghiên cứu cho thấy, mẫu thu từ xã Hoa Thành (huyện Yên Thành) có tỷ lệ nhiễm PCV2 cao nhất (29,4%), tiếp đến là xã Phú Thành (huyện Yên Thành) và xã Nam Anh (huyện Nam Đàn) (25,0%). Tỷ lệ mẫu dương tính với PCV2 từ lợn không có dấu hiệu của bệnh hô hấp điển hình là 22,2% và từ lợn có biểu hiện của bệnh hô hấp điển hình là 25,0%. Mẫu thu từ dịch xoang miệng, huyết thanh và mẫu phủ tạng cho kết quả dương tính với PCV2 lần lượt là 23,7%
22,7% và 24,2%. Như vậy, ngoài việc sử dụng phương pháp lấy mẫu máu và phủ tạng hiện đang phổ biến sử dụng để chẩn đoán bệnh do PCV2 gây ra thì lấy mẫu dịch xoang miệng cũng là một phương pháp hữu hiệu để chẩn đoán bệnh này. Kết quả của nghiên cứu này sẽ là tài liệu tham khảo có ý nghĩa cho những nghiên cứu tiếp theo về PCV2 lưu hành tại tỉnh Nghệ An và giúp đề xuất biện pháp phòng chống bệnh do PCV2 gây ra trên những đàn lợn nuôi tại Việt Nam.

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