Một số đặc điểm dịch tễ của bệnh do Histomonas meleagridis trên gà nuôi thả vườn tại một số tỉnh phía Bắc Việt Nam=Some epidemiological characteristics of Histomonosis in chicken in some Northern provinces, Viet Nam

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Tác giả: Lê Anh Đào, Thị Giang Nguyễn, Thị Hồng Chiên Nguyễn, Thị Lan Nguyễn, Văn Thọ Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học kỹ thuật Thú y, 2017

Mô tả vật lý:

Bộ sưu tập: Báo, Tạp chí

ID: 88235

Thêm vào giỏ

A total of 1800 chickens (expecting infection with H. meleagridis) in 4 provinces of Bac Ninh, Bac Giang, Hung Yen, Vinh Phuc were collected for identifying Histomonosis through the clinical symptoms and autopsy. As a result, 394 chickens were determined to infect with Histomonosis, accounting for 21.89 %. Of which, the highest infection rate (34.90%) was in Bac Giang province, followed by Vinh Phuc province (20.24%), Hung Yen province (17.83%)
the lowest infection rate was in Bac Ninh province (13.18%).The infection rate of chickens at different ages was also different, the highest rate was in the chicken at 3 to 4 months old (37.70%), followed by the chickens at 4 months old (31.11%)
1-2 months old (19.57%)
the chickens under a month old were not infected with this disease.The infection rate of chickens varied by the seasons. In spring, the infection rate was the highest (33.95%)
followed by summer (28.65%)
autumn (14.44%) and the lowest infection rate was in winter (10.11%).The infection rate of the chickens with Histomonas meleagridis (H. meleagridis) was 28.54% at the farm raising over 1000 chickens
this rate was 20.97% at the farm raising 500-1000 chickens the lowest rate (16.74%) was at the farm raising less than 500 chickens. The difference of these infection rates were statistically significant (p The infection rate of chickens with pinworm (Heterakis gallinarum) was associated with the infection rate of chickens with Histomonosis. The pinworm infection rate of chicken in the studied area was 28.56% ranging from 20.07% to 39.79%.Dựa vào triệu chứng lâm sàng và mổ khám 1800 con gà nghi mắc bệnh do Histomonas meleagridis (H. meleagridis) tại 4 tỉnh Bắc Ninh, Bắc Giang, Hưng Yên, Vĩnh Phúc, đã phát hiện được 394 con mắc bệnh do H. meleagridis, chiếm tỷ lệ 21,89%. Trong đó, gà ở tỉnh Bắc Giang chiếm tỷ lệ mắc bệnh cao nhất 34,90%, kế đến là tỉnh Vĩnh Phúc (20,24%), tỉnh Hưng Yên (17,83%) và thấp nhất ở tỉnh Bắc Ninh (13,18%).Tỷ lệ gà mắc bệnh do H. meleagridis ở các lứa tuổi là khác nhau, cao nhất ở gà từ 3 đến 4 tháng tuổi (37,70%), tiếp đến gà trên 4 tháng tuổi (31,11%)
gà từ 1-2 tháng tuổi (19,57%)
gà dưới 1 tháng tuổi không mắc bệnh này.Tỷ lệ gà mắc bệnh khác nhau ở các mùa, cao nhất là ở mùa xuân (33,95%), mùa hè (28,65%), mùa thu (14,44%) và thấp nhất là ở mùa đông (10,11%).Tỷ lệ mắc bệnh do H. meleagridis của gà ở quy mô trang trại nuôi trên 1000 con là 28,54%, từ 500-1000 con là 20,97% và dưới 500 con là 16,74%. Tỷ lệ sai khác có ý nghĩa thống kê (pTỷ lệ gà nhiễm giun kim (Heterakis gallinarum) có liên quan mật thiết với tỷ lệ gà mắc bệnh do H. meleagridis. Tỷ lệ gà nhiễm giun kim trong vùng nghiên cứu là 28,45%, dao động từ 20,07% đến 39,79%.

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