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Clint Loest

Title: Professor of Animal Science

Major Field of Interest: Ruminant Nutrition

Email: cloest@nmsu.edu

Office Phone: 575-646-1714

Office Location: Knox Hall 225


1999: Ph.D., Ruminant Nutrition, Kansas State University, Manhattan, Kansas.

1995: M.S., Ruminant Nutrition, University of Free State, Bloemfontein, South Africa

1993: B.S., Animal Science, University of Free State, Bloemfontein, South Africa
Courses Taught:

Animal Science 304 - Feeds and Feeding

Animal Science 501 - Advanced Animal Nutrition

Animal Science 520 - Advanced Nutritional Management I: Feedlot
Major Research Areas:

Amino acid nutrition for stressed cattle

Improving amino acid utilization by cattle and sheep fed forage - and byproduct - based diets.

Optimizing byproduct and forage utilization by ruminants through nutritional and management strategies.


2010: Young Scientist Award, Western Section, American Society of Animal Science.

2009: Distinguished Award for Graduate Teaching and Advisement, Gamma Sigma Delta, The Honor Society of Agriculture.

2007: Distinguished Teaching Award, College of Agricultural, Consumer and Environmental Sciences, New Mexico State University.


Supervisor, Animal and Range Sciences Nutrition Laboratory

Safety Officer, Animal and Range Sciences Safety Committee

Advisor, Animal and Range Sciences Graduate Student Association

Professional Membership, American Society of Animal Science

Professional Membership, American Dairy Science Association

Selected Publications:

Endecott, R. L., S. H. Cox, C. M. Rubio, C. A. Loest, D. E. Hawkins, and M. K. Petersen. 2012. Effects of supplements with increasing glucogenic precursor content on reproduction and nutrient utilization in young postpartum range cows. Lvst. Sci. 145:109-118.

Carter, B. H., C. P. Mathis, G. C. Duff, J. B. Taylor, K. M. Taylor, B. C. Graham, L. W. Hall, J. D. Allen, D. M. Hallford, and C. A. Loest. 2011. Supplemental branched-chain amino acids improve performance and immune response of newly-received feedlot calves. Proc. West. Sec. Am. Soc. Anim. Sci. 62:321-324.

Yates, D. T., C. A. Loest, T. T. Ross, D. M. Hallford, B. H. Carter, and S. W. Limesand. 2011. Effects of bacterial lipopolysaccharide injection on white blood cell counts, hematological parameters, and serum glucose, insulin, and cortisol concentrations in ewes fed low- or high-protein diets. J. Anim. Sci. 89:4286-4293.

Carter, B. H., C. A. Loest, L. Chen, G. G. Gilliam, B. C. Graham, J. A. Carroll, C. T. Collier, and D. M. Hallford. 2010. Arginine supplementation does not alter nitrogen metabolism of beef steers during a lipopolysaccharide challenge. Proc. West. Sec. Am. Soc. Anim. Sci. 61:55-59.

Mathis, C. P., S. H. Cox, C. A. Loest, M. K. Petersen, and J. T. Mulliniks. 2009. Pasture preconditioning calves at a higher rate of gain improves feedlot health but not postweaning profit. Prof. Anim. Sci. 25:475-480.

Waggoner, J. W., C. A. Loest, J. L. Turner, C. P. Mathis, and D. M. Hallford. 2009. Effects of dietary protein and bacterial lipopolysaccharide infusion on nitrogen metabolism and hormonal responses of growing beef steers. J. Anim. Sci. 87:3656-3668.

Waggoner, J. W., C. A. Loest, C. P. Mathis, D. M. Hallford, and M. K. Petersen. 2009. Effects of rumen-protected methionine supplementation and bacterial lipopolysaccharide infusion on nitrogen metabolism and hormonal responses of growing beef steers. J. Anim. Sci. 87:681-692.

Gilliam, G. G., B. C. Graham, J. W. Waggoner, K. L. DeAtley, D. M. Hallford, and C. A. Loest. 2008. Effects of branched-chain amino acid supplementation on growing steers during an endotoxin challenge. Proc. Wes. Sec. Am. Soc. Anim. Sci. 59:16-19.

Mathis, C. P., S. H. Cox, C. A. Loest, M. K. Petersen, R. L. Endecott, A. M. Encinias, and J. C. Wenzel. 2008. Comparison of low-input pasture to high-input drylot backgrounding on performance and profitability of beef calves through harvest. Prof. Anim. Sci. 24:169-174.

Nolte, J. van E., C. A. Loest, A. V. Ferreira, J. W. Waggoner, and C. P. Mathis. 2008. Limiting amino acids for growing lambs fed a diet low in ruminally undegradable protein. J. Anim. Sci. 86:2627-2641.

Thelen, T. M., C. A. Loest, J. B. Taylor, S. Wang, and G. S. Lewis. 2007. Intrauterine bacterial inoculation and level of dietary methionine alter amino acid metabolism in nulliparous yearling ewes. J. Anim. Sci. 85:3371-3382.

Waggoner, J. W., C. P. Mathis, C. A. Loest, J. E. Sawyer, F. T. McCollum, III, and J. P. Banta. 2007. Case Study: Impact of morbidity in finishing beef steers on feedlot average daily gain, carcass characteristics, and carcass value. Prof. Anim. Sci. 23:174-178.

Waterman, R. C., C. A. Loest, W. D. Bryant, M. K. Petersen. 2007. Supplemental methionine and urea for gestating beef cows consuming low quality forage diets. J. Anim. Sci. 85:731-736.

Link to Personal Web Page http://aces.nmsu.edu/directory/person.php?person_id=435