PMID: 213872Sep 23, 1978Paper

Susceptibility of chicks to infectious bursal disease (IBD) following vaccination of their parents with live IBD vaccine

The Veterinary Record
P J Wyeth, G A Cullen

Abstract

Vaccination of parent chickens with a commercial live infectious bursal disease (IBD) vaccine under field conditions at varying ages and by different routes resulted in variable susceptibility to the disease in their chicks. There was little correlation between the methods of vaccination and the levels of immunity in the chicks. There was some evidence that levels of transferred immunity decreased with the age of the parents. Of five flocks examined, the onset of susceptibility to IBD occurred at two days of age in two flocks and about one week of age in the other three. Four flocks were completely susceptible by the 27th day, the other at 31 days. Precipitins were demonstrated at day old in 100 per cent of chicks in three flocks and in 80 per cent in the other two. The precipitins had disappeared in all flocks by 17 days of age.

Citations

Feb 1, 1987·Tropical Animal Health and Production·P A AbduC D Ezeokoli
May 17, 2008·Avian Pathology : Journal of the W.V.P.A·J O Okoye, E P Aba-Adulugba
Jul 1, 1982·Australian Veterinary Journal·R L ReeceM Hindmarsh
Apr 27, 2007·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Mohamed M HamoudSusan M Williams

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