Image of Clint Loest

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
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Education:

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:

Dietary protein and amino acid utilization by cattle and sheep fed forage- and byproduct-based diets
Byproduct and forage utilization by ruminants.
Amino acid utilization by cattle and sheep fed forage- and byproduct-based diets.
Specific interests are in nutrient metabolism of ruminants.

Honors and Awards:

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.

Other

Supervisor, Departmental Nutrition Laboratory
Chair, Animal Science Graduate Committee
Chair, Animal and Range Sciences Promotion and Tenure Committee
Advisor, Animal and Range Sciences Graduate Student Association
Western Section, American Society of Animal Science Committee
Editorial Board, Journal of Animal Science

Selected Publications:

Alford, J. B., J. G. Castro, E. R. Oosthuysen, S. L. Rosasco, R. D. Richins, E. J. Scholljegerdes, D. M. Hallford, and C. A. Loest. 2016. Effects of capsaicin source on blood capsaicin, glucose and insulin concentrations, rumen fermentation and nitrogen balance of sheep. Proc. West. Sec. Am. Soc. Anim. Sci. 67:171-175.

Bester, Z., M. E. Hubbert, R. E. Carey, K. L. Samuelson, and C. A. Loest. 2016. Shifting the paradigm of liver abscess dogma in USA feedlots. Proc. West. Sec. Am. Soc. Anim. Sci. 67:214-217.

Castro, J. G., J. B. Alford, K. E. Quinn, F. A. Lopez, S. L. Pillmore, E. J. Scholljegerdes, and C. A. Loest. 2016. Bioavailability of supplemental ruminally-protected leucine in sheep. Proc. West. Sec. Am. Soc. Anim. Sci. 67:101-105.

Miller, T. J., M. E. Hubbert, C. D. Reinhardt, C. A. Loest, E. F. Schwandt, and D. U. Thomson. 2016.� Comparison of tulathromycin, tilmicosin, and gamithromycin: Metaphylactic treatments in high risk calves for bovine respiratory disease. Bov. Pract. 50:174-178.

Oosthuysen, E. R., M. E. Hubbert, K. L. Samuelson, E. J. Scholljegerdes, G. C. Duff, and C. A. Loest. 2016. Health evaluation of immune-stimulated and hay-supplemented feedlot receiving calves as assessed by blood gas analysis. Proc. West. Sec. Am. Soc. Anim. Sci. 67:83-87.

Owensby, L. R., C. B. Gardner, R. D. Dunlap, C. A. Loest, S. L. Ivey, S. H. Cox, A. F. Summers, and E. J. Scholljegerdes. 2016. Effects of rumen protected arginine supplementation to cows during early or late gestation on progeny glucose tolerance. Proc. West. Sec. Am. Soc. Anim. Sci. 67:194-197.

Rath, L. L., K. L. Samuelson, A. L. Salazar, F. A. Lopez, E. J. Scholljegerdes, and C. A. Loest. 2016. Mammalian hormones associated with stress impact microbial fermentation of rumen fluid in vitro. Proc. West. Sec. Am. Soc. Anim. Sci. 67:190-193.

Samuelson, K. L., M. E. Hubbert; and C. A. Loest. 2016. Effects of dietary urea concentration and zilpaterol hydrochloride on performance and carcass characteristics of finishing steers. J. Anim. Sci. 94:5350-5358.

Samuelson, K. L., M. E. Hubbert, E. R. Oosthuysen, Z. Bester, and C. A. Loest. 2016. Effects of protein concentration and degradability on performance and carcass characteristics of finishing heifers receiving 0 or 400 mg ractopamine hydrochloride. Proc. West. Sec. Am. Soc. Anim. Sci. 67:200-204.

Samuelson, K. L., M. E. Hubbert, M. L. Galyean, and C. A. Loest. 2016. Nutritional recommendations of feedlot consulting nutritionists: The 2015 New Mexico State and Texas Tech University survey. J. Anim. Sci. 94:2648-2663.

Samuelson, K. L., A. L. Salazar, L. L. Rath, J. B. Alford, E. R. Oosthuysen, S. L. Lodge-Ivey, D. M. Hallford, and C. A. Loest. 2016. Salivary cortisol concentrations affect rumen microbial fermentation and nutrient digestibility in vitro. Proc. West. Sec. Am. Soc. Anim. Sci. 67:209-213.

Mulliniks, T., J. Sawyer, F. Harrelson, C. P. Mathis, S. Cox, C. A. Loest, and M. K. Petersen. 2015. Effect of late gestation body weight change and condition score on progeny feedlot performance. Anim. Prod. Sci. (http://www.publish.csiro.au/an/AN15025).

Oosthuysen, E. R., M. E. Hubbert, J. R. Graves, A. K. Ashley, and C. A. Loest. 2015. Health, performance, and ovalbumin-specific immunoglobulin titers of feedlot receiving calves in response to intranasal or subcutaneous vaccination programs. Proc. West. Sec. Am. Soc. Anim. Sci. 66:217-221.

Oosthuysen, E. R., M. E. Hubbert, M. Garcia, M. R. Garner, and C. A. Loest. 2014. Evaluation of novel nasal and intestinal inoculants for feedlot receiving calves. Proc. West. Sec. Am. Soc. Anim. Sci. 65:150-153.

Waterman, R. C., J. S. Caton, C. A. Loest, M. K. Petersen, and A. J. Roberts. 2014. An assessment of the 1996 Beef NRC: Metabolizable protein supply and demand and effectiveness of model performance prediction of beef females within extensive grazing systems. J. Anim. Sci. 92:2785-2799.

Gunter, S. A., T. L. Springer, C. A. Loest, and J. J. Goldman. 2013. Effect of processing method on in sacco ruminal degradability of organic matter and nitrogen from canola seeds and in vitro intestinal nitrogen digestion of the in sacco residue. Anim. Prod. Sci. 54:1030-1038.

Malesky, S. M., J. L. Turner, C. A. Loest, L. Chen, and J. Browne-Silva. 2013. Nitrogen retention and plasma amino acid responses in mature geldings fed three dietary concentrations of lysine. J. Equine Vet. Sci. 33:733-738.

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.

McDaniel, M. R., M. E. Hubbert, and C. A. Loest. 2012. Delaying a bovine viral diarrhea vaccine and growth implant with metaphylaxis affects performance, but not health of feedlot heifers. Proc. West. Sec. Am. Soc. Anim. Sci. 63:125-129.

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.