Ultrastructural observations of the adenohypophyseal gonadotrophs from growth selected lines of chickens.


The ultrastructure of adenohypophyseal gonadotrophs (GT-cells) from pullets of lines selected for high (HWS) and low (LWS) body weight was studied at various physiological ages. Increasing the photoperiod beyond 14 hours in a 24-hour cycle did not have a significant effect on the ultrastructure of GT-cells in either line. A qualitative analysis, based on… (More)