[Histologic and histometric studies of the epiphysis cerebri of the fattening guinea fowl (Meleagris gallopavo) after the use of different light regimens].
Chicken turkey-hens aged 8 weeks were exposed to a light regime of 1 hour light to 2 hours darkness for 8 weeks. Another experimental group was exposed to permanent lighting from hatching to the 16th week of age. The epiphyses of 5 males and females of either group were histologically, histochemically, and histometrically investigated. Significant differences were found to exist between the 2 experimental groups with regard to the nuclear volumes of epiphyseal cells. Epiphyseal cell activity was found to be reduced by permanent lighting.
G
G
Gutte
I
I
Hanna
J
J
Seeger
G
G
Mehlhorn
D000818:Animals; D005260:Female; D008027:Light; D008297:Male; D010870:Pineal Gland / Q000166:cytology* / Q000528:radiation effects; D011200:Poultry / Q000033:anatomy & histology*
Histologische und histometrische Untersuchungen an der Epiphysis cerebri von Mastputen (Meleagris gallopavo) nach Anwendung unterschiedlicher Lichtregime.