weight changes and sexual behavior in ghezel intact and castrated male lambs

castration of male animal's leads to a reduction in aggressive behavior, which animals will avoid wasting energy resulting to economic production of the animal, grows. it also reduces damage and bruising animals and increases normed meat producing at slaughter. in this study, 20 lambs ghezel breed in four age groups, group 1: one month (n = 4), group 2: two months (n = 4) group 3: three months (n = 4), group 4: four months (n = 4), were selected and by the surgical procedure were castrated.  for comparing the effects of castration on fattening capacity and frequency of sexual behaviors, group 5: one month (n=4) was used as a control group. the glm procedure of sas in unbalanced design was used. five groups of lambs were fed with a same diet of fattening for 270 day. lambs weighing was done after 12 hours of starvation every month. a significant difference was observed between control group and other castrated groups (p