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Research Article

JIRLS. 2024; 6(2): 13-23


HISTOMORPHOLOGICAL STUDY OF THE EFFECTS OF PHOTOPERIODISM ON THE ADRENAL GLAND OF AFRICAN GIANT RATS (Cricetomys gambianus)

Zubairu M., Ali M.N., Ajeigbe S.O., Umosen A.D., Muazu T.A., Baso A., Abiyere O.E., Atabo S.M., Adamu A.Y., Adamu F.N..




Abstract

The study investigated the effects of photoperiodism on the adrenal glands of African giant rats (AGR)¬. Thirty captive AGR of both sexes were divided into 3 different groups of 10 rats each (5 males and 5 females). Group 1 had equal hours of darkness and light for 8 weeks, Group 2 had total darkness for 8 weeks while, Group 3 had total lighting for 8 weeks. Each rat was euthanized using sodium pentobarbital at 86mg/kg BW IP. Grossly, Group 2 rats showed massive deposition of adipose tissue. The relative weight of the adrenal gland at 8 weeks increases significantly (P

Key words: Adrenal gland; African giant rat; Darkness; Light; Photoperiodism






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