Fig. 1

The morphological structure of the quail testes in the control and after feeding on Ginger roots. The testis capsule or tunica albuginea (TA) and interstitial tissue (IT) appear thin in the birds fed on the balanced ration (in the left panel). The seminiferous tubules (ST) in those birds have some spaces in between and a wide lumen. After supplementation with 10 and 15 g of Ginger roots to the ration, the TA became thicker, the IT became more condensed and obvious, and the ST have a narrower lumen because of the thicker spermatogenic epithelium SP. Note the blood vessels (BV) in the Ginger-supplemented groups