P. Mollerholtkamp et al., RELEASE OF LH IN PIGS AFTER ADMINISTRATIO N OF THE GNRH AGONIST BUSERELIN IN COMPARISON TO D-PHE(6)-LHRH, Reproduction in domestic animals, 30(1), 1995, pp. 21-24
The effect of various doses of buserelin and D-Phe(6)-LHRH on LH secre
tion was tested in eight castrated male pigs. The preparations were gi
ven intravenously and the administered dose of buserelin, as the activ
e substance, was always one fifth of that of D-Phe(6)-LHRH. Both prepa
rations produced a dose-related increase in LH secretion. The results
indicate that the efficacy of buserelin in terms of LH release in the
pig is five times that of D-Phe(6)-LHRH when expressed on the basis of
the active substance in the preparation.