The present study was aimed to determine the effect of GnRH analogue [des-Gly10, D-Ala6]-LH-RH ethylamide on the quality of rabbit spermatozoa stored at 17°C for 3 days. Semen from 5 bucks (13 ejaculates) was used in the experiment. Ejaculates were divided and diluted at a 1:10 ratio with rabbit semen extender Galap (IMV, France) (Control) or with Galap extender supplemented with GnRH analogue ...

The objective of this study was to evaluate the spermatozoa quality of the F4 F5 generation of transgenic rabbit males carrying the mWAP-hFVIII gene in comparison to non-transgenic individuals and previous transgenic generations. Semen samples from 4 transgenic rabbits and 10 randomly selected non-transgenic males of the same breed and age were collected once a week (5 ejaculates per male were ...

Semen characteristics were evaluated every 2 wk from 7 through 13 mo of age in 31 beef bulls representing six breed groups (Hereford, Angus, Hereford x Angus crossbreeds, Angus x Hereford crossbreds, Red Poll and Brown Swiss). Breeds differed in age at puberty, defined as the age at which an ejaculate was first obtained that contained a minimum of 50 x 10(6) total spermatozoa with at least 10% ...

A study was conducted to investigate the effect of season on, and to estimate heritabilities of, and genetic correlations among, semen and spermatozoa characteristics and the relationship of these characteristics with measures of testicular or scrotal size in 6-, 9- and 12-month old ram lambs of Menz and Horro sheep breeds indigenous to Ethiopian highlands. A total of 278 ram lambs with substan...

Sperm activation in the polychaete annelid Arenicola marina was investigated using video microscopy following the in vitro and in vivo manipulation of gametes. Careful observation of spermatozoa obtained from spawning animals indicated that they were immotile immediately after their release from the gonopores, but that they subsequently became motile following dilution in sea water. It was dete...

Study objectives were to; 1) determine if supplementing of n-3 fatty acids improves membrane integrity, and hence viability and motility of stallion spermatozoa following cold storage, and following cryopreservation, and 2) determine if n-3 supplementation alters the fatty acid composition of stallion spermatozoa. Data indicate that following 90 d of n-3 supplementation daily sperm output and t...

We investigated sperm nuclear vacuolation in relation to acrosome reactions and the maintenance of sperm motility. Thirty male patients who visited our Male Infertility Clinic were enrolled. These patients underwent conventional semen analyses, Acrobeads tests, and high-magnification observation of the sperm head to evaluate the degree of nuclear vacuolation on the Acrobeads test scoring after ...

Background: Epididymal sperm has been recovered with the aim of conserving potentially valuable genetics Materialss from post mortem males for subsequent usage in assisted reproduction technologies. Among the quality parameters of spermatozoa, motility and velocity patterns are sensitive for chemical and physical components of medium which they were diluted. Also close correlation between sperm...

In order to improve Boer goat semen quality during cryopreservation process, the influence of sugar supplementation on semen characteristics of sperm were investigated. Three experiments were carried out to investigate the effect of (a) addition of two monosaccharides (fructose and glucose) and two disaccharides sugars (trehalose and sucrose) (b) sugar combination (fructose and trehalose, sucro...

The aim of the study was to find out effect adding nanocitrate Mn, Zn and Cu diluent for ram spermatozoa cryopreservation on its quality ability fertilizing. experiment carried six clinically healthy breeder 2–4-year-old rams Texel breed. received ejaculates were evaluated volume, sperm concentration motility then divided into control experimental groups. Control samples diluted with lactose-yo...