Effects of Feeding Supplemental Fat During Gestation to First-Calf Beef Heifers11This research was conducted under a cooperative agreement between USDA, ARS, and the Montana Agric. Exp. Stn. Mention of a proprietary product does not constitute a guarantee or warranty of the product by USDA, Montana Agric. Exp. Stn., or the authors and does not imply its approval to the exclusion of other products that may also be suitable. USDA, Agricultural Research Service, Northern Plains Area, is an equal opportunity/affirmative action employer, and all agency services are available without discrimination. Authors express appreciation to J. D. Bottger, Univ. of Wyoming, for analyses of blood samples obtained in Study 2.