Differential Resistance to Staphylococcus aureus Challenge in Two Related Lines of Chickens

Abstract

Trials were conducted to determine whether differential resistance to challenge with Staphylococcus aureus was characteristic of two related lines of New Hampshire chickens differing genetically in size of the bursa of Fabricius. Neonatal small bursa line (SBL) chicks were superior to the unselected Lester J. Dreesen (LJD) line in five of six trials employing intracardiac challenge (x2 = 6.3, .05 > P > .01). Older (7 to 12 wk) SBL chicks, challenged intravenously, had superior resistance than Line LJD chicks in three of four trials where a direct comparison was possible. The mortality rate in Line SBL was 34% in all trials compared with a 54% mortality rate (x2 = 11.7, P

Publication Date

6-1991

Journal Title

Poultry science

Publisher

Oxford journals

Digital Object Identifier (DOI)

10.3382/ps.0701357

Scientific Contribution Number

1691

Document Type

Article

Rights

© 1991 Poultry Science Association, Inc.

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