title: [Atresia of the follicle during ovarian growth in domestic poultry].
abstract: Follicle atresia in the ovary of fowl is apparent as early as the first day of post-incubation development, and affects the primary oocytes. During follicle growth and ripening its intensity increases in such a way that in the laying period up to 20% of follicles are affected. In the course of atresia of primary follicles cells undergo lysis after primary necrotic changes and the surrounding connective tissue overgrows them so that they are obliterated. The growing smaller follicles are mainly affected by obliterative atresia, only sometimes a cyst is temporarily formed. The larger and large follicles are subjected either to obliterative or cystic atresia, either without luteinisation or with luteinisation of cells of membrana granulosa, theca interna or with luteinisation of both membranes. With the follicles up to 500 to 600 microns prevail obliterative forms, with larger follicles cystic forms.
mesh_terms: D000818:Animals; D002645:Chickens / Q000254:growth & development*; D005260:Female; D006080:Ovarian Follicle / Q000166:cytology*; D010053:Ovary / Q000166:cytology / Q000254:growth & development*
vernacular_title: Atrézia folikulov v rastúcom vajecníku kury domácej.