Alaa Assi *⁽¹⁾

(1) Department of Animal Production, Faculty of Agriculture, Damascus University, Syria.

(*Corresponding author: Alaa Assi ,Email: allaaasi24@gmail.com )

Received:5\09\2021                 Accepted:18\01\2022

Abstract: 

This study was conducted to discover. The effect of administration methods on infectious Bronchitis vaccine for levels of immunity in broiler’s chicken. One hundred and thirty broiler chicks were used breed (Ross). Ten chicks from them were slaughtered at one day old to study the maternal immunity by ELIZA. The titer of maternal immunity was (4142),so the first vaccine was administrated at (10) day old. The chicks from one day old were divided into two equal groups of (60) each, and each one was subdivided into two frequencies of (30) each. The condition breedving and feeding were the same for all the birds, but the vaccination method was different .The first group was given the vaccine by drinking water and the second group was given the vaccine by eye drops. The titer of antibodies in eye drops administration method gave higher significant difference than drinking water method on P<0.05.Wich gave priority to using this method to vaccinate broiler’s chicken.                                      

Keywords: Infectious Bronchitis Disease (IB), Level of immunity (Titer), Enzyme Linked  Immunosorbent Azzay (ELIZA).

Full paper in Arabic: pdf