Castration of Iraqi local bucks by bilateral spermatic cord torsion compared with double ligation of spermatic cord

[摘要] This study aimed to investigate the efficacy of using spermatic cord torsion as one of the easy castration techniques in Iraqi local black goat, and compared with double ligation of spermatic cord also to be acquainted if the age of animals has an effect on spermatic cord torsion technique. This present study was done in the animals farm of the college of the veterinary medicine of Al-Qadissiya university, 30 local male black bucks (15 kids of 2.5 - 3 months) (15 adult bucks of 13 - 15 months) with body weight (13.4 ± 2.21) and (31.9 ± 3.25) Kg respectively, were supplied for two symmetrical experiments, each one included division the animals randomly to three groups, first group (G1) left as control , Second group (G2) had spermatic cord ligation of both testes and third group (G3) had bilateral spermatic cord torsion and after two months orchiectomy of all testes were done to study the dimensions, the weight, histopathology of the testes and the level of serum testosterone hormone. The results revealed that the castration lead significance (P<0.01) to increase the body weight of both kids and bucks as compared with control, the maximum weight gained was in the bilateral spermatic cord torsion, while in the kids was the ligation group. Weights, lengths and circumferences of the both testes of all animals showed a significant decrease (P<0.01) as compared with control animals. Testosterone hormone analysis revealed a significant decrease (P<0.01) in its level in all castrated groups when compared with control group. Seminal analysis showed a significant decrease (P<0.01) (seminal plasma only) for the volume, concentration, viability, individual and mass motility of the sperms of the all castrated animals as compared with control. The histopathological study of all treated testes corroborated there were a severe degeneration and fibrosis in the testicular tissue as well as in the sertoli and leydig cells and complete suppression of spermatogenesis in all treated groups. The conclusion that spermatic cord torsion caused damage to the testes as ligation did with no effect of age of animals on this technique.

[学科分类] 土木及结构工程学