Gonadal Steroid Hormones and Brain Protection

Singh, Meharvan; Brock, Courtney; Cunningham, Rebecca L.; Su, Chang

doi:10.1002/9783527697274.ch12

Cited by 1 publication

(1 citation statement)

References 164 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Testosterone, irrespective of its dose, inhibits weaver birds gonadal growth cycle. Similarly, the effects of testosterone on testicular cycle were studied in detail in the Indian weaver bird (Singh, 1982;. In longterm experiments, high doses of testosterone were found to be gonadostimulatory, whereas low doses of the hormone induced either stimulation or inhibition of testicular activity, depending on the phase of the testicular cycle when the treatment was started.…”

Section: Introductionmentioning

confidence: 99%

Role of Testosterone on Body Mass, Body Molts, Primary Flight Feathers, Plumage Regeneration and Testes in Brahminy Myna (Sturnus Pagodarum)

Kumar¹,

Pandey

Choudhary³

et al. 2022

The Scientific Temper

View full text Add to dashboard Cite

Three groups (1-3) of birds were subjected to non stimulatory photoperiod(9L:15D), and received olive oil (0.1 ml), 10 and 50 ìg TP (Testosterone propionate)per bird on alternate day respectively. Next three groups (4-6) of birds weresubjected to stimulatory photoperiod (15L:9D), and received olive oil (0.1 ml), 10and 50 ìg TP (Testosterone propionate) per bird on alternate day respectively. Intotal, fifteen injection were made. Groups (1-3) were transferred to stimulatoryphotoperiod (15L:9D) after 60 days. Body mass, testis volume, plumageregenerations, primary flight feathers and body molts also studied in thisexperiment. Observations were made at the beginning, fortnightly and end of the30 day experiment.The results of current study demonstrate the effect of TP on the testes,body weight, body molts, primary flight feathers and plumage regeneration inbrahminy myna. Brahminy myna placed on 9L:15D did not induced testis growthtill 60 days after that photoperiod of 9L:15D transferred to 15L:9D then the testisvolume increased significantly and this clearly suggest that brahminy mynaswere not sensitive to short photoperiod (non stimulatory photoperiod) and asexpected, 15L:9D showed testicular response till 60 days then suddenly decreasedand this can be taken to suggest that brahminy myna are a long day species andthis study did not show an effect of prior treatment of testosterone hormone onphotoperiodic induction of testicular growth

show abstract

Section: Introductionmentioning

confidence: 99%