His research endeavors involve a wide range of in vivo and in vitro approaches to study nutritional and hormonal control of ovarian function and follicular development. Experimental approaches span from evaluating control of steroidogenesis, mitogenesis and gene expression in ovarian cells to determining the effect of nutritional supplements on ovarian function and milk production in dairy cattle. These efforts have been supported by extramural grants from NIH, USDA, and private industry, and have yielded over 190 peer-reviewed journal articles. Funding from a NIH grant has led to the discovery of several novel factors involved in ovarian function, providing advances in our understanding of female fertility and valuable research training experiences for postdocs, graduate and undergraduate students.