The evaluation of sperm motion is crucial for processing of seminal doses for artificial insemination. Here, the combined effect of the type and capture area of three counting chambers, together with the type of diluent employed, on sperm motility was analysed. Ejaculates from thirteen Holstein...

The purpose of this study was to examine the effects of sub-lethal concentration of Xanthine oxidase (XO) on the post-thawed bull sperm quality. Semen samples were collected from four Holstein bulls, twice a week and during three consecutive weeks (n=24 total ejaculates). After collection in each...

In order to investigate the effect of adding arginine on poor motile bull sperms, this study was conducted in Artificial Insemination Center, Iraq, from December, 2008 to July, 2009. 114 ejaculates with poor motile sperms estimated (30 to 55%) were collected by artificial vagina (AV) from 10...

The fertility of semen diluted in Tris egg yolk and diluted in glycerol-based soya lecithin (Biociphos) extenders was compared using 24 ejaculates from 4 Holstein-Friesian bulls. It was shown that although the mean pre-freezing sperm motility was identical (72.92±1.68 vs. 72.50±2.78%), post-thaw...

The aim of the present study was to determine the suitability of using two egg yolk-free commercial extenders, Andromed® and Biociphos Plus®, as compared with the Tris-egg yolk based diluent Biladyl®, for the cryopreservation of bull spermatozoa when the freezing protocol involved holding the...

Effect of butylated hydroxytoluene (BHT) on the quality of frozen-thawed Holstein bull sperm in egg yolk-citrate extender was evaluated. High quality semen samples were diluted in egg yolk-citrate extenders containing 0, 0.5, 1, 2 and 4 mM BHT and subsequently frozen in liquid nitrogen. Pre-freeze...