Observations on the use of Komarov strain of Newcastle disease vaccine in the Sudan

Tropical Animal Health and Production - Tập 25 - Trang 151-154 - 1993
M. A. Gaffar Elamin1, A. I. Khalafalla1, S. M. Ahmed2
1Veterinary Research Administration, Soba, Khartoum, Sudan
2The Arab Company for Livestock Development, Khartoum

Tóm tắt

Broilers at 18 days old were vaccinated with a single dose of the K strain of Newcastle disease vaccine administered by different routes. The serological results obtained by haemagglutination inhibition at weekly intervals post-vaccination showed that birds vaccinated intranasally (i/n) or intramuscularly (i/m) had antibody titres higher than those vaccinated by the oral method. Furthermore, when challenged 3 weeks after vaccination, those broilers vaccinated i/n or i/m had 75% and 70% resistance respectively, while those vaccinated by the oral or spray methods failed to withstand the challenge.

Tài liệu tham khảo

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