Comparison of the effects of Kisspeptin-10 or GnRH on luteinizing hormone secretion during the luteal phase of the oestrous cycle in swamp buffalo cows
2019
T. Chaikhun-Marcou(Mahanakorn University of Technology, Bangkok (Thailand). Faculty of Veterinary Medicine) | P. Sotthibandhu(Mahanakorn University of Technology, Bangkok (Thailand). Faculty of Veterinary Medicine) | W. Suthikrai(Chulalongkorn University, Bangkok (Thailand). Faculty of Veterinary Science) | R. Jintana(Chulalongkorn University, Bangkok (Thailand). Faculty of Veterinary Science) | P. Makoom(Chulalongkorn University, Bangkok (Thailand). Faculty of Veterinary Science) | S. Suadsong(Chulalongkorn University, Bangkok (Thailand). Faculty of Veterinary Science) | F. De Rensis(University of Parma, Parma (Italy). Department of Veterinary-Medical Science) E-mail:Fabio.derensis@unipr.it
This study compared the effect of Kisspeptin-10 or GnRH administration on LH release in swamp buffalo during the luteal phase of the estrous cycle. Six animals were treated with a single intravenous injection of 1,000 pmol/kg b.w. of kisspeptin-10 or a single intramuscular injection of 10 µg/cow of GnRH agonist buserelin. For plasma LH analysis blood samples were collected every 15 minutes, 1 h before and 6 h after Kisspeptin-10 and GnRH administration. An increase in LH plasma concentrations was observed after GnRH administration but not after Kisspeptin-10 administration. The results of this study indicate that during the luteal phase of the estrous cycle, administration of GnRH, but not Kisspeptin-10, stimulate LH secretion.
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