The cause of infertility is unexplained in about 22-28% of all infertile couples. The prognosis for spontaneous pregnancy in such couples is better than in those with diagnosed causes of infertility. Traditional treatment options in this group have included expectant management, clomifene citrate, intrauterine insemination with (super ovulation plus intrauterine insemination) or without (intrau...

In vivo blastocyst production and collection using superovulation and intrauterine insemination was established in albino Syrian hamsters. Twenty female albino hamsters were injected pregnant mare serum gonadotropin (PMSG, 25 IU) in non-breeding season and 48 h or 56 h later, 25 IU of human chorionic gonadotropin (hCG) were injected. Both groups were divided into two subgroups of natural mating...

The first successful artificial insemination in cats was described 40 years ago. However, the insemination in cats is at present not as commonly performed in daily veterinary practice as the insemination in dogs due to the practical difficulties in collecting a sperm sample from the tomcat, the small volume of the sperm obtained, the few possibilities to determine the optimal timing of insemina...

A newly developed technique for trans-cervical deep uterine insemination of goats is described. An experiment was conducted to compare this transcervical method with the laparoscopic intrauterine insemination using frozen-thawed semen. Of the 46 primiparous and 21 multiparous estrus-synchronized Boer goat does inseminated transcervically, 71% (22/31) kidded compared with 53% (19/36) of does ins...

Purpose: This study sought (i) to investigate the relationship between Postwash total motile sperm count and Postwash percentage motile sperm in predicting successful intrauterine insemination and (ii) to determine the minimal Postwash total motile sperm count required to achieve pregnancy with intrauterine insemination. Methods: Five hundred four women, who underwent 1636 intrauterine insemina...

In an experiment involving the artificial insemination of 312 Merino ewes, fertilization, early (18 day), and late (100 day) pregnancy rates were examined after intrauterine insemination with frozen semen using a laparoscope. Oestrus was synchronized in ewes by progestagen sponge/PMSG treatment. After cervical insemination of fresh semen (control) 55 hrs after sponge removal, the fertilization,...

Blood serum progesterone (P4) levels in donor cows and heifers at donor selection, superovulation, insemination and embryo recovery were investigated. Significant differences in P4 levels in the investigated donors during superovulatory oestrus insemination were observed. The cows with low levels of P4 at insemination (5.8 ± 1.7 nmol/l) showed a better yield and quality of embryos (P<0.01) comp...