The aim of this study was to determine the effect of two variants of Tris-citric acid-fructose (TCF) extender containing whole hen egg yolk (TCF-HEY) and lyophilized lipoprotein fractions extracted from ostrich egg yolk (TCF-LPF(o)) on selected biological properties of cryopreserved sperm cells. Post-thaw percentage of motile sperm (MOT) was significantly higher (P < 0.05) for TCF-HEY extender ...

The influence of different extender osmolality levels and the presence of different cryoprotectants on the postthawed semen’s characteristics and post-thawed plasma membrane integrity of ram spermatozoa were studied. Ram semen was frozen with TRIS-egg yolk based extender according to two-step dilution procedures. The final concentrations of the cryoprotectants: 6% glycerol, 6% 1,2propanediol, 6...

The present study was conducted to investigate the effects of butylated hydroxytoluene (BHT) supplementation on diluted, cooled and frozen-thawed ram spermatozoa. After primary evaluation of collected ejaculates, only semen samples with motility of more than 70% and sperm concentration higher than 3×10 sperm/ml were used for cryopreservation. The selected semen samples were then pooled and dilu...

Hen egg yolk is normally used as a cryoprotective agent in semen freezing extenders, but its use has sanitary and practical disadvantages. Moreover the protection afforded by egg yolk has not yet been completely elucidated. The objective of this study was to compare the egg yolk plasma fraction to whole egg yolk in stallion freezing extender. Plasma contains mainly Low Density Lipoproteins (LDL...

the aim of this study was to determine the effects of the antioxidants superoxide dismutase (sod),glutathione peroxidase (gpx) and butylated hydroxytoluene (bht) on microscopic semen parameters andlipid peroxidation following the freeze-thawing of bull semen. ejaculates were collected from five holsteinbulls and pooled at 37°c. the semen samples were diluted with a cey extender containing addit...

We present a modification to the Prikry on Extenders forcing notion allowing the blow up of the power set of a large cardinal, change its cofinality to ω without adding bounded subsets, working directly from arbitrary extender (e.g., n-huge extender). Using this forcing, starting from a superstrong cardinal κ, we construct a model in which the added Prikry sequences are a scale in the normal Pr...

The aim of this study was to determine the effects of the antioxidants superoxide dismutase (SOD),glutathione peroxidase (GPx) and butylated hydroxytoluene (BHT) on microscopic semen parameters andlipid peroxidation following the freeze-thawing of bull semen. Ejaculates were collected from five Holsteinbulls and pooled at 37°C. The semen samples were diluted with a CEY extender containing addit...

the present study is an attempt to investigate the use of vague expressions by intermediate efl learners. more specifically, the current study focuses on the structures and functions of one of the most common categories of vague language, i.e. general extenders. the data include a 22-hour corpus of english-as-a-foreign-language conversations. a comparison is also made between this corpus and a ...

The objective of the study was to assess the semen characteristics of Jersey, Mithun and Siri breeds of bulls and to compare the suitability of Tris Eggyolk Citrate and commercial soya lecithin based BIOXcell extenders for cryopreservation of semen from the these breeds of bulls. The mean semen volume was 4.55± 1.57, 4.86±1.33 and 4.83±1.72 ml in Jersey, Mithun and Siri bulls, respectively. Mea...

Caffeine was incorporated in egg yolk tris glycerol extender (EYTG) at the time of dilution of Murrah semen at a concentration of 1.0, 3.0 or 5.0 mM. The samples were subsequently frozen. The post thaw progressive motility and live sperm per cent improved signifi cantly (P<0.05) with addition of 1.0 (70.0±0.99 and 88.80±0.84) and 3.0 mΜ (65.83±0.88 and 86.16±0.96%) caffeine to the extender befo...