With hormone administration in mammalian farm animals, animals are enabled to give birth simultaneously and to lamb also in anoestrus season by using hormone in the flock after involution. Besides, increasing the number of births in a certain time period, the number of lambs born after one gestation can be increased and the production of lamb meat can be corresponded to the period when demand and price are the highest in the market. Facilities and economic benefits are obtained in terms of care, feeding and workforce planning again with oestrus synchronization in animals whereas, a uniform fattening material is obtained in terms of age and live weight and great facilities are obtained in the organization of the application of artificial insemination. In addition, with nonseasonal lambing, continuity can be ensured in milk production and sufficient number of sib or half-sib lambs born in identical time section can be obtained for scientific research (Askin, 1982).