Ph.D. Ruminant Nutrition, Pennsylvania State University 2011
M.S. Animal Science, Pennsylvania State University 2007
B.S. Animal Science and Agricultural Production, Zamorano University 2004
Nutrient utilization to improve feed efficiency, reduce metabolic costs of energy and protein, maximize microbial protein synthesis and milk production is the broad spectrum of my research program. The following areas are being studied to accomplish this objective: Understanding the relationships between forage to concentrate ratios, dietary components and mammary gland development and function when nutrients are provided precisely to meet the requirements dairy ruminant animals. Enabling nutrient utilization in ruminants by developing technology to increase their potential use. The use of by-products to replace conventional ingredients based on the production system and geographical location. Using in-vitro and in-vivo methods to identify fybrolytic enzymes, microbial modifiers, optimal carrier methods that enhance nutritional contributions to the animal. Different chemical and molecular approaches for improving our basic knowledge of ruminant digestion are tools are currently being used to undertake this intriguing and exiting area of research. The use livestock production to reduce poverty, effects on climate change, and the implementation of efficient techniques to support sustainable (productive not subsistent) milk production for small farmers around the world.
Suarez-Mena, F.X., Lascano, G. J., and A. J. Heinrichs. 2013. Behavior of precision-fed dairy heifers on a low or high forage ration at four levels of dry distillers grains. J. Dairy Sci. 96:5184-5193.
Lascano, G.J, Tricarico, J.M., and A.J. Heinrichs. 2012. The effect of dietary starch level and dose response of Saccharomyces cerevisiae in nutrient utilization for control-fed dairy heifers. J. Dairy Sci. 95:3298-3309.
Lascano, G.J., Velez, M., Tricarico, J.M., and A.J. Heinrichs. 2012. Nutrient utilization of fresh sugarcane-based diets with slow-release non protein nitrogen addition for control-fed dairy heifers in the tropics. J. Dairy Sci. 95:370-376
Lascano, G.J, and A.J. Heinrichs. 2011. Effects of feeding different levels of dietary fiber through the addition of corn stover on nutrient utilization of dairy heifers precision-fed high and low concentrate diets. J. Dairy Sci. 94:3025-3036.
Lascano G.J., Zanton, G.I., Heinrichs, A J., Weiss, W.P., 2010. Technical Note: A noninvasive urine collection device for female cattle: Modification of the urine cup collection method. J. Dairy Sci. 93, 2691–2694.
Lascano, G. J., G.I. Zanton, and A. J. Heinrichs. 2009. Concentrate levels and Saccharomyces cerevisiae affect rumen fluid-associated bacteria numbers in dairy heifers. Livest. Sci. 126:189-194.
Lascano, G. J., G.I. Zanton, F.X. Suarez-Mena, and A. J. Heinrichs. 2009. Effect of limit feeding high and low concentrate diets with Saccharomyces cerevisiae on digestibility and on dairy heifer growth and first-lactation performance. J Dairy Sci. 92:5100-5110.
Lascano, G. J., and A. J. Heinrichs. 2009. Rumen fermentation pattern of dairy heifers fed restricted amounts of low, medium, and high concentrate diets without and with yeast culture. Livest. Sci. 124: 48-57.
Lascano, G.J., Zanton, G.I., Moody, M.L., Topper, P.A, Wheeler, E.F. and A.J. Heinrichs. 2008. Short Communication: Effect of changing the ratio of forage to concentrate on ammonia emissions by dairy heifers. J. Dairy Sci. 91: 4301-4306.
Lascano, G.J, and A.J. Heinrichs. 2007. Yeast culture (Saccharomyces cereviasiae) supplementation in growing animals in the dairy industry. CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources. 2: 049.
Professional society activity:
American Society of Animal Science
American Dairy Science Association
American Society for Nutrition
Comparative Nutrition Society
AVS 3750 Applied Animal Nutrition