I am trained as a ruminant nutritionist who specializes in cow-calf nutrition. My area of research is focused on strategic

supplementation to the cow and offspring to improve growth, reproduction, and health. I conduct the majority of my research at the 28,000 acre Corona Range and Livestock Research Center. Work conducted at Corona focuses on development of nutritional programs targeted during early or late gestation that enhance the development of the bovine fetus. This work utilizes novel feedstuffs that were developed in my laboratory. Processes involved in development of this feedstuff have been applied to other nutrients. I also conduct heifer development work in an attempt to investigate the impact of growth rates in heifers grazing native range. Although a lot of work is available on this subject, very little has been conducted in a range setting as harsh as that found in the southwest.

I am currently conducting research in collaboration with the Tucumcari Agricultural Science Center. This work focuses on methods of reducing supplementation needs for developing heifers by the use of irrigated forages. The desired outcome would be to show that during drought situations, grazing pressure on native rangelands can be alleviated by sending replacement heifers to irrigated pasture.

Clayton feedyardI also conduct experiments at our research feedlot (Clayton Livestock Research Center, Clayton, NM). Although I am a cow-calf nutritionist, I feel that conducting research with newly-received feedlot cattle can have direct application at the cow-calf level. Some of these projects include an assessment of Bovine Respiratory Disease complex antibody titers in cattle originating from ranches that employ various health management backgrounds, liver trace mineral and dehydration status upon arrival and their impact on health in newly-received calves. This work will identify factors that predispose cattle to illness in the feedlot and allow us to address these at the ranch level.

I have trained numerous students on how to ruminally and duodenally cannulate beef cattle and sheep. We have utilized these animals to determine the effects of unique feedstuffs on site and extent of digestion. These animals are maintained by my laboratory.

Department of Animal and Range Sciences. I am the chairman of the Corona Range and Livestock Research Center and the Campus Farm Education and Research Center steering committees and am in charge of the Chromatography lab within the Department of Animal and Range Sciences. My students also utilize the core NMcropped-Facilities-semiaerial.jpgSU nutrition laboratories. Through these responsibilities, my students are provided additional opportunities to manage cattle at the ranch and on campus as well as work with laboratory equipment beyond what is required by their research.