Age related histological and histochemical studies on the testis of Aseel and Vanaraja breeds of poultry

Birds (10) of 2 age group, viz. 5 months (grower) and 13 months (adult) of Aseel and Vanaraja breeds of poultry were used. The thickness of tunica albuginea, maximum and minimum diameter of seminiferous tubules, diameter of primary spermatocytes and number of sustentacular cells or Sertoli cells per seminiferous tubule were significantly higher in growers and adults of Vanaraja than Aseel whereas, number of interstitial cells per field were significantly higher in growers and adults of Aseel than Vanaraja. The density of connective tissue fibers, PAS activity and AB-PAS activity was more in both groups of Vanaraja than Aseel