A Comparison of Various Routes of Newcastle Disease Vaccination at One Day of Age

摘要: Abstract Groups of 100 one-day-old chicks with moderate levels maternal antibody were vaccinated the B1 strain Newcastle disease virus subcutaneously, intratracheally, intraocularly or by aerosol left unvaccinated. Certain these groups revaccinated at 9 and 28 days 14 LaSota virus. Vaccination all routes one day age resulted in an response increased resistance to challenge. The most effective route was followed intraocular method. Intratracheal administration subcutaneous inoculation led a marginal response. Aerosol gave adequate responses