FACTORS INFLUENCING ANTIBODY TITLE WHEN VACCINATION OF BIRDS IN THE CONDITIONS OF INDUSTRIAL PRODUCTION

DOI: 10.26155 / VET.ZOO.BIO.201905003
UDC 636.5: 619: 616.98: 658.1

Authors

O. V. KHOTMIROVA
BRYANSK STATE AGRICULTURAL UNIVERSITY

Abstract

The article presents the results of studies aimed at studying the influence of various factors in industrial production on the antibody titer after vaccination. Vaccination was carried out from infectious bronchitis of hens. The lowest antibody titers up to 120 days of age were observed in roosters and, therefore, they are most susceptible to disease at this age. In chickens, on the contrary, up to 120 days of age, higher antibody titers are noted, their decrease occurs at the age of 210 and 230 days. This may be due to rearrangement and peak egg production, which leads to a decrease in immunity tension. The lowest average titers at the end of the peak egg production period were observed in heavy birds - 47,2% lower than in small ones. By the end of the study period, the highest immunity tension was detected in light birds at 32,27% above the average age.

Keywords

hens, vaccination, infectious bronchitis of hens, immunity.