Effect of acetylcholine, prostaglandin F2 alpha and estradiol on number of sperm in the reproductive tract of inseminated rabbits.

Increased retention of spermatozoa in the reproductive tract of estrous rabbits after administration of prostaglandin F2 alpha immediately before insemination.

Two experiments were conducted to determine whether prostaglandin F2~ (PGF2a) administered to does immediately before natural or artificial insemination would increase the retention of sperm in the reproductive tract. The PGF2~ was injected intramuscularly at 200 /~g/kg of body weight. In the first experiment, 16 estrous does, eight injected intramuscularly with PG2a, were mated naturally and n...

Effects of dietary polyunsaturated fatty acids on ovarian function and prostaglandin secretion in lactating dairy cows

As lactating cows in severe negative energy balance have poor reproductive performance, the effect of dietary fat supplementation (fish oil, soybean oil) on PGFM secretion, ovarian function and blood metabolites is investigated. In this experiment, the effects of dietary polyunsaturated fatty acids on plasma metabolites, ovarian function and prostaglandin secretion of 20 primiparous Holstein co...

The Influence of Sperm Morphology, Total Motile Sperm Count of Semen and the Number of Motile Sperm Inseminated in Sperm Samples on the Success of Intrauterine Insemination

Comparison of the Effect of Alpha Lipoic Acid (ALA) and Beta-Defensin 1 Protein on Human Sperm Motility and Viability in Different Times of Incubation

Background and Objectives: Antioxidant alpha lipoic acid and β-defensin 1 protein may have a positive effect on the quality of sperm parameters. In this study, the effect of sperm incubation with alpha lipoic acid antioxidant and β-defensin 1 protein were assessed on sperm motility and viability at different times.   Methods: In this experimental study, routine semen analysis was carried out o...

Effect of sperm count on the fertility and prolificity rates of meat rabbits.

The effect of sperm count per insemination dose was evaluated on fertility and litter size at birth. In the first experiment, 124 receptive multiparous does were inseminated with 16, 4, 2 and 1 million spermatozoa. Does were slaughtered 12 days after insemination and the number of implanted embryos were recorded. Does inseminated with 16 or 4 million sperm showed no differences in pregnancy rat...