Kisspeptin injection improved the semen characteristics and sperm rheotaxis in Ossimi ram |
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| Authors: | Timor M EL-sherry Mohammed A Abdel-Ghani Gamal B Mahmoud Ahmed A Ezzat |
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| Institution: | 1. Department of Theriogenology, Faculty of Veterinary Medicine, Assuit University, Assuit, Egypt;2. Department of Animal Production, Faculty of Agriculture, Assiut University, Assuit, Egypt;3. Department of Biology, College of Science, King Khalid Unversity, Abha, Saudi Arabia
Department of Theriogenology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt |
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| Abstract: | The aim of the present study was to investigate the effect of kisspeptin-10 (Kp10) injection on semen characteristics, testosterone (T) production and sperm rheotaxis using microfluidic devices in immature ram. Computer-assisted sperm analysis (CASA) with controlled flow velocity was used to explore the kinetic parameters of sperm and positive rheotaxis (PR %). PR % was defined as the number of PR sperms over the number of motile sperms. Healthy Ossimi rams were randomly divided into two groups; a saline-treated control group and Kp10-treated one (5 µg/kg body weight). Treatments were given by intramuscular injection once a week for 1 month. After 1 month, the semen was collected and evaluated weekly for 6 weeks, while the blood samples were collected every 2 weeks for the next 8 weeks. Semen properties were significantly affected by Kp10 injection (p < .01). The Kp10 increased the volume, sperm concentration and percentages of live sperm compared with those of control. Additionally, sperm trajectories and rheotaxis get improved by the injection of Kp10 with time. Furthermore, kisspeptin improved the secretion of testosterone levels throughout the period of study. In conclusion, injections of the Kp10 had a positive impact on semen characteristics as well as improved sperm rheotaxis of Ossimi rams in subtropics. |
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| Keywords: | kisspeptin rams rheotaxis semen characteristics testosterone |
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