[Hormonal stimulation of reproductive function in swine].

Abstract

Industrial conditions, gynaecological disorders, ovarian deficiency being unfavourable factors for pigs reproduction, as well as the necessity in rapid sex maturation require thorough knowledge on physiology of reproduction processes. The importance belongs to the hormonal treatment in development of special biotechnological methods. Efficiency of the latter is determined by the kind of hormone used, its dose, injection time in sex cycle and the knowledge of species specificity of physiological regulation of reproductive processes in pigs of great value. The achievements in this country and abroad, devoted to the technology of oestrogens, gestagens, androgens and their combinations as well as gonadotropins (PMS, CG), gonadotropin-releasing hormone applications have been reviewed. The most often used schemes of hormonal treatment and drugs, as well as the results obtained have been described. The data presented can be used for needs of practical cattle-breeding.