Abnormal oviducts in laying hens following natural infection with infectious bronchitis at an early age
McMartin, D.A.; Macleod, H., 1972: Abnormal oviducts in laying hens following natural infection with infectious bronchitis at an early age. British Veterinary Journal 128(5): Xix-Xxi
Following an outbreak of infectious bronchitis in a flock of sexed female chickens at 18 days old, 6% of the survivors did not lay, and 97% of the non-layers had abnormal oviducts.