id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-022378-ovxmy1as	Cook, Jane K.A.	Coronaviridae	2009-05-15		.txt	text/plain	4034	192	50	IBV also aff ects egg-laying performance, and renal damage associated with infectious bronchitis has become increasingly important, particularly in broilers. Economically, the most important aspects are the eff ects on egg production and quality in laying hens and production performance in broilers, where the initial respiratory infection is frequently exacerbated by secondary infections. In turkeys, coronaviruses (TCoV, also called Bluecomb disease virus and Turkey enteric coronavirus) are known to be associated with enteric disease, mortality and underperformance and to aff ect egg-laying performance in older birds. Th is is a new area of investigation and, while the coronaviruses detected in some gallinaceous and nongallinaceous birds have not so far been associated with disease, these species are potential carriers of IBV and other coronaviruses and could therefore play a role in global transmission of infection. In IBV infection of commercial layers or broiler breeders, respiratory signs may or may not be observed and the most common manifestation is the eff ect on egg production and egg quality.	./cache/cord-022378-ovxmy1as.txt	./txt/cord-022378-ovxmy1as.txt