Evaluation of the reproductive system development and egg-laying performance of hens infected with TW I-type infectious bronchitis virus

Table 3 The lesions of oviducts caused by TW I-type IBV at 200 dpi

Group	Fibrin clot in oviduct	White spots on oviduct	Yolk peritonitis	Necrotic follicle in the ovary	Thin uterus wall^a	Number of follicles^b	Length of oviduct^c
Challenge	3/14	6/14	7/14	1/14	1/14	4.4 ± 1.5	66.4 ± 6.7
Control	0/14	0/14	0/14	0/14	0/14	5.5 ± 0.5	73.0 ± 3.5

^a “Thin” uterus wall means that the uterine wall was thin and that there were few folds in the uterus.
^b The follicles which a diameter of more than 1.5 cm in the ovary were recorded.
^c It is the total length (cm) of the infundibulum, magnum, and isthmus.

ISSN: 1297-9716