The objectives of the present study were to determine the effects of six different antibiotics in controlling the growth of semen contaminating bacteria and if these antibiotics have any adverse effect on Awassi ram spermatozoa. Semen samples from six mature Awassi rams were used in this study. A total number of 120 ejaculates were collected from the rams using an artificial vagina once a week....

Sperm DNA damage has a negative impact on pregnancy rates following assisted reproduction treatment (ART). The aim of the present study was to examine the relationship between sperm DNA fragmentation and live-birth rates after IVF and intracytoplasmic sperm injection (ICSI). The alkaline Comet assay was employed to measure sperm DNA fragmentation in native semen and in spermatozoa following den...

ANGUSJournal n September 2011 Breeder question No. 1 Which is more important when doing a bull BSE, measuring a bull’s scrotal circumference or evaluating the semen that he produces? Response: Scrotal measurements and semen characteristics are both important! This is proven by the change made in the Society for Theriogenology’s breeding soundness exam in 1992. The exam was changed from a numeri...

In this study, the formation of hydrogen peroxide (H2O2) by chilled goat spermatozoa was measured. Furthermore, the effects of dead spermatozoa on motility characteristics were studied. Fresh collected ejaculates from five Shami bucks were centrifuged and virtually all seminal plasma was removed. A part of the collected spermatozoa was killed by two ways: the first by repe...

Cryoprotectants have critical roles to prevent cell damages during cryopreservation. However, the adjustment of cryoprotectant concentration is also very crucial protect cells from toxicity. The present study was designed investigate effect extenders including high dimethyl sulfoxide (DMSO) on post-thaw rabbit sperm quality. Pooled samples (n=7) were diluted and cryopreserved in 250 mmol/L Tris...

testicles were isolated from dromedary camels in a local slaughterhouse at breeding and non-breeding seasons. sperms were recovered from different parts of the epididymis (caput, corpus and cauda) and stained separately on slide glasses by eosin nigrosin staining method and dried by a hair dryer and carried to the laboratory. in the lab, slides were observed for evaluation of the proportion of ...

Testicles were isolated from dromedary camels in a local slaughterhouse at breeding and non-breeding seasons. Sperms were recovered from different parts of the epididymis (caput, corpus and cauda) and stained separately on slide glasses by eosin nigrosin staining method and dried by a hair dryer and carried to the laboratory. In the lab, slides were observed for evaluation of the proportion of ...

Acknowledgements We want to thanks the research assistance of Islamic Azad University, Sari Branch and also to all the personnel of Saint Mary infertility Center in Sari, Iran. It is known that body mass index (BMI) correlate with female fertility; however, little information is available on the effect of BMI on male fertility or sperm parameters. Therefore, the study objective was to determine...

purpose: to assess whether bromocriptine-rebound method (brm) can improve pregnancy   outcomes compared to long protocol after intracytoplasmic sperm injection cycles (icsis).   materials and methods: a total of 114 women underwent icsi. pregnancy outcomes and   hormonal data were compared between two groups, i.e. long protocol and brm. ovulatory   women with normal serum prolactin levels were ...

Aim: Present investigation was carried out to study the physical characteristics of Kankrej bulls semen by evaluation of various semen parameters from neat semen and at various stages of semen preservation. Materials and Methods: A total of 60 ejaculates, 10 each from 6 mature Kankrej bulls, once in a week for 10 weeks, were collected and analyzed for various semen attributes. Result: The mean ...