Survey on immue response of black chicken vaccinated by H5N1 Re-6 and Navet- Vifluvac vaccines in Tien Giang Province

Abstract

A study on immune response of black chicken (Gallus gallus domesticus brisson) vaccinated by H5N1 Re-6 and Navet-Vifluvac vaccines in Tien Giang province was conducted through Hemagglutination Inhibition test using experimental black chicken serum samples. The studied result showed that the protective rate of passive antibodies in one-day old chicken in the treatment 1 (H5N1 Re-6 vaccine) and the treatment 2 (Navet-Vifluvac) was 60% and 65% respectively. The protective rate of passive antibodies of the chickens at 14 days old chicken in the treatment 1 and treatment 2 was 40% and 50% respectively.The protective rate of the black chickens after one month vaccinating H5N1 Re-6 vaccine in the treatment 1 for the chickens at 30 days old, 60 days old, 90 days old , 120 days old, 150 days old and 180 days old was 16%, 65%, 85%, 85%, 75% and 65% respectively. Similarly in the treatment 2, after one month vaccinating Navet-Vifluvac vaccine, the protective rate of the chickens at 30 days old, 60 days old, 90 days old, 120 days old, 150 days old and 180 days old was 25%, 85%, 95%, 85%, 80% and 55% respectively.The studied results showed that the ability of chickens in creating immune response after vaccinating H5N1 Re-6 vaccine was faster and higher than that of Navet-Vifluvac vaccine.