Effects of castration on penile and urethral development in Black Bengal Goat

Thirty-six(n=36) healthy male kids of black bengal goat were divided into six groups having six animals in each,to evaluate the influence of castration on the development of urethra. proper urethral growth reduces urinary calculi formation and helps to determine the possible suitable age of castration. group i,ii,iii,iv and v were castrated at the age of 4,6,8,10,and 12 weeks,respectively and group vi was treated as control. after getting maturity,goats were slaughtered and collected all penises with maximum precaution and hygienic practices,and morphometric examinations performed extensively. the highest measurements of penile length,penile weight,penile circumference and urethral lumen perimeter were recorded as 23.67±1.29 cm,16.85± 2.61 gm,22.94±2.00 cm,and 6.25±0.38 mm in control bucks,respectively. of the castrated groups,kids at 8 and 10 weeks of age were found to have similar parameters with that of control group. these observations indicate that castration at later age favors for adequate development of urethra and penis. copyright 2016 zoological society of pakistan.