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[Therapeutic and prophylactic effect of LH-release in cattle]
C Goehring1, C Aurich, J Lange
1Universitätsklinik für Geburtshilfe, Gynäkologie und Andrologie, Veterinärmedizinische Universität, Wien.
Abstract:
In this study, LH release in response to the GnRH agonist buserelin and during treatment with a progesterone-releasing intravaginal device (PRID) was studied. A dose of 20 micrograms buserelin induced a more pronounced LH release than 4, 8, 40 and 80 micrograms. After injection of buserelin, pituitary response to a second buserelin injection was markedly reduced for at least 24 hours. Repeated buserelin injections at an interval of several hours therefore cannot be recommended. LH release was markedly suppressed by treatment with PRID. Two PRID tended to be more effective than one. After PRID removal, LH release increased significantly.