Study Immune and productive treatise for broiler vaccinatedwith infectious bursal disease vaccine (IBD vaccine) after added boron powder to the feed

Abstract

This study was performed to investigate changes in growth performance, blood Pictures, weights of internal organs and immune response to infectious bursal disease(IBD vaccine) of broilers fed different levels of Boron (100mg, 200mg and 300mg/kg) in feed from 1 week to 4weeks. 150 broiler chicks (one day old) were randomly divided into five  equal groups (each group contain 30), as following: first group ,(G1) was received 100 mg/kg of Boron, second group (G2) was received 200 mg/ kg of Boron, third group, (G3) was received 300 mg/ kg of Boron and fourth group (G4) was not received Boron in feed Just take IBD  vaccine and consider as control positive, (G5) was not received Boron in feed and consider as control negative , four groups only vaccinated with IBD vaccine at 10 and 18 day sold, Growth performance of the chicks (Body weight, weight gain and feed intake  )were weekly determined, at the end of experiment weights of internal organs (,kidney, spleen  and bursa of fabricius) were determined and Blood samples were collected to measured    antibody titers (Ab)titers against IBD vaccine by ELISA test ,total protein and  determined blood pictures(RBCs, PCV,WBC_S,H/L ratio), The results of this study showed that body weight, weight gain, feed intake, , total protein, blood pictures and Ab titers were highly significant  increase (p<0.01) in G2 as compared to control group followed by G1 respectively in all weeks. Whereas the weights of internal organs (kidney, bursa of fabricius and spleen ) were significant increase in G3, G2 and G1 respectively. In conclusion, the results indicated that 100mg/kg.feed,200mg.kg.feed levels of Boron supplemented diet of broiler chicken caused improvement of blood parameters growth performance, there's no inhibition of the immunity response of chickens against IBD vaccine.