Comparative study between vasectomy and epididymectomy for preparation of teaser Ram Al-Dahhan,M.R.A.Amen,A.A.and Al-Badry,K.I

Abstract

Teaser rams were used for discovering estrus in ewes because this technique
is very important for super ovulation,embryo transfer and transgenic animals
programs.sever techniques were used for preparation of teaser animals
especially in sheeps so this study was designed to compare between two
surgical methods (vasectomy and epididymectomy).
Six Assaf of breed rams,Clinical reproduction system,libido and laboratory
examination (volume ejaculate,mass and individual motility and sperm
concentration). were performed 2 week before experiment for qualification
of the general health of the animals the animals were divided into two equal
groups, Vasectomy in the first group and epididymectomy in the
another.Cases were followed up clinically, laboratory examination and
histological.
Results showed that surgery of epididymectomy takes longer time than
vasectomy.Vasectomiesed animals showed sever pain during first tow days
with simple adhesion in the site of operation, while epididymectomy caused
sever adhesion between the testis and skin with odema in the site of
operation also the pain was sever in addition to, it takes longer time than in
vasectomy. The seminal fluid examination showed disappear of life sperms
immediately after operation vasectomy or epididymectomy also histological
changes were obtained in both types of surgical methods ,which include
reduce in the rate of spermatogenisis, thickness of basement membren,while
these changes were more sever after vasectomy.
Results of this study was showed that epididymectomy technique should
superior results than vasectomy for longer time.