Satheshkumar, STANUVAS2020-03-112020-03-112019-12http://krishikosh.egranth.ac.in/handle/1/5810145168TNV_35thVCRI_SA_Dec-2019(15-21)Embryo transfer technology is an important biotechnological tool to produce more number of offspring from genetically superior animals during their reproductive life. Application of exogenous gonadotropins and knowledge of ovarian follicular dynamics are two very powerful tools that provide opportunities to maximize the number of oocytes obtained from superior cows. Gonadotropin induced superovulation is the basic and efficient method of obtaining multiple embryos from these genetically valuable females. However, the superovulatory response (SOR) is highly unpredictable and variable between treatments thus affecting the efficiency of the technology and limiting its practical application. Variability in ovarian response has been attributed to various factors such as donor parity, production status, season, hormone preparations and their dose etc., (Quaresma et al., 2003; Lee et ul. 2012; Vieira et al., 2014).enVeterinary ScienceArticle