College of Agricultural Sciences Personnel Profile
Personnel Photo
Scott E Speidel
Assistant Professor
Animal Sciences
College of Agricultural Sciences

Animal Sciences Building, Room 6
Phone:
970-491-5419
Education:
  • Ph D, Colorado State University; Animal Science / Breeding and Genetics
  • MS, University of Arizona; Animal Science / Dairy Cattle Molecular Genetics
  • BS, California State University Fresno; Animal Science
Website:
http://

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Zeng, Xi, Speidel, Scott E, Thomas, Milton, Enns, R. Mark, "Estimating Economic Values of Traits Belonging to Cattle in Maternal Beef Production. Proc. West. Sect. Am. Soc. An. Sci." American Society of Animal Science

Dias, Marina M, Canovas, Angela, Mantilla-Rojas, C., Riley, David G, Luna-Nevarez, Pablo, Coleman, Stephen John, Speidel, Scott E, Enns, R. Mark, Islas-Trejo, A, Medrano, Juan F, Moore, Steve , Fortes, Marina, Nguyen, Loan T., Venus, B., Diaz, Iara, Souza, F., Albuquerque, L, Thomas, Milton, Oliveria, H., (2017) SNP detection using RNA-sequences of candidate genes associated with puberty in cattle Genetics and Molecular Research 16 1 17

Luna-Nevarez, P., Leyva-Corona, J. C., Sanchez-Castro, M. A., Zamorano-Algandar, R., Medrano, J. F., Rincon, G., Enns, R. Mark, Speidel, Scott E, Thomas, Milton, (2016) "A polymorphism within the PAPPA2 gene is associated with postpartum fertility traits in Holstein Dairy cattle located in southern Sonora Mexico" J. Anim. Sci. 94(E. Suppl. 5) E163-E164

Zeng, Xi, Holt, Timothy N, Speidel, Scott E, Enns, R. Mark, Thomas, Milton, (2016) "Angus cattle at high elevation: Comparison of models to estimate breeding values of yearling pulmonary arterial pressure" J. Anim. Sci. 94(E. Suppl. 5) E166-E167

Bailey, D. W., Millward, M., Stricklan, D., Thomas, Milton, Speidel, Scott E, Enns, R. Mark, Medrano, J., Howery, L. D., (2016) "Development of indicies to select beef cattle for terrain use" Proceedings Society of Range Management pp. 81

Krehbiel, B. C., Thomas, Milton, Blackburn, H. D., Speidel, Scott E, Enns, R. Mark, Keenan, L. D., (2016) "Evaluation of genetic structure across five U.S. Climate zones using prominent AI sires of two British Bos taurus breeds" J. Anim. Sci. 94(E. Suppl. 5) E4-E5

Krehbiel, B. C., Thomas, Milton, Blackburn, H. D., Speidel, Scott E, Enns, R. Mark, Keenan, L., (2016) "Evaluation of genetic structure across five US climate zones using prominent AI sires of two British Bos taurus breeds" Proceedings WSASAS 67 65-68

Canovas, A., Cockrum, Rebecca, Brown, D., Riddle, S., Neary, J. M., Holt, Timothy N, Medrano, J. F., Islas-Trejo, A., Enns, R. Mark, Speidel, Scott E, Cammack, K., Stenmark, K. R., Thomas, Milton, (2016) "Functional genomics of high altitude disease in Angus cattle: leveraging-OMICs and systems biology to better understanding of the function and role of key contributing genes." Proc. Int. Soc. Anim. Genet. pp. 78. Abstract P3050

Canovas, A., Cockrum, Rebecca, Brown, D., Riddle, S., Neary, J. M., Holt, Timothy N, Krafsur, Greta M, Medrano, J. F., Islas-Trejo, A., Enns, R. Mark, Speidel, Scott E, Cammack, K., Stenmark, K. R., Thomas, Milton, (2016) "Functional SNP in a polygenic disease induced by high-altitude in fattening Angus steer" Proc. Eur. Fed. Anim. Sci pp. 67. Abstract 419

Canovas, A., .Cockrum, R. R, Brown, D., Riddle, S., Neary, J. M., Holt, Timothy N, Medrano, J. F., Islas-Trejo, A., Enns, R. Mark, Speidel, Scott E, Cammack, K., Stenmark, K. R., Thomas, Milton, (2016) "Functional SNP in a polygenic disease induced by high-altitude in fattening Angus steers using systems biology approach" J. Anim. Sci. 94(E. Suppl. 5) E121

Boldt, Ryan John, Speidel, Scott E, Thomas, Milton, Keenan, L., Enns, R. Mark, (2016) "Genetic parameters for production traits and heifer pregnancy in Red Angus cattle" J. Anim. Sci. 94(E. Suppl. 5 E183

Crawford, Natalie Faye, Thomas, Milton, Holt, Timothy N, Speidel, Scott E, Enns, R. Mark, (2016) Heritabilities and genetic correlations of pulmonary arterial pressure and performance traits in Angus cattle at high altitude J. Anim. Sci. 94 11 4483-4490

Bailey, D. W., Millward, M. F., Thomas, Milton, Speidel, Scott E, Enns, R. Mark, Medrano, J. F., Howery, L. D., (2016) "Improvements of cattle grazing distribution through genetic selection: challenges and opportunities" Proc. 10th Int. Rangeland Congr. pp. 182-183

Thomas, Milton, Coleman, Stephen John, Speidel, Scott E, Enns, R. Mark, (2016) "Multi-omics data resources and use in genetic improvement of cattle growth and health" J. Anim. Sci. 94(E. Suppl. 5) E369-E370

Canovas, A, Cockrum, Rebecca, Brown, Richard David, Riddle, S. K., Neary, J. M., Holt, Timothy N, Krafsur, Greta M, Medrano, J. F., Islas-Trejo, A., Enns, R. Mark, Speidel, Scott E, Cammack, K., Stenmark, K. R., Thomas, Milton, (2016) "Polymorphisms and splice variants in a polygenic disease induced by high altitude in fattening Angus steers using RNA-Seq and systems biology" Plant and Animal Genome XXIV Abstract PO108

Crawford, Natalie Faye, Zeng, Xi, Coleman, Stephen John, Holt, Timothy N, Speidel, Scott E, Enns, R. Mark, Newman, John, Hamid, R., Thomas, Milton, (2016) "Pulmonary arterial pressure in yearling Angus cattle managed at high altitude: Study of a non-synonymous SNP in the oxygen-dependent degradation domain of the endothelial PAS domain-containing protein 1 gene" J. Anim. Sci. 94(E. Suppl. 5) E79-E80

Bailey, Derek W, Thomas, Milton, Holt, Tim N, Stephenson, Mitch B, Enns, R. Mark, Speidel, Scott E, (2016) Relationship of pulmonary arterial pressure and terrain use of Angus cows grazing high-altitude foothill rangelands Livest. Sci. 190 76-80

Dias, M. M., Thomas, Milton, Canovas, A., Mantilla-Rojas, C., Riley, D., Luna, P., Coleman, Stephen John, Speidel, Scott E, Enns, R. Mark, Ilas-Trejo, A., Medrano, J. F., Cockrum, Rebecca, Cammack, K. M., Stenmark, K. R., Moore, S., Fortes, M. R. S., Nguyen, L.T, Venus, B., Diaz, I., Souza, F., Fonseca, L., Baldi, F., Albuquerque, L., Oliveira, H., (2016) "SNP discovery in RNA-Seq across breeds of cattle in puberty-related candidate genes (i.e., network hubs)" Plant and Animal Genome Abstract PO518

Luna-Nevarez, P., Pavlovich-Sotomayor, M., Luna-Ramirez, R. I., Aguilar-Trejo, C. M., Luna-Nevarez, G., Zeng, Xi, Speidel, Scott E, Enns, R. Mark, Thomas, Milton, (2016) "Study of genetic basis of immune response in gilts vaccinated with a modified live PRRS virus in a swine farm from southern Sonora Mexico" J. Anim. Sci. 94(E. Suppl. 5) E86-E87

Culbertson, Miranda Marguerite, Thomas, Milton, Leachman, L. L., Enns, R. Mark, Speidel, Scott E, (2016) "The effect of heterosis on pulmonary arterial pressure in beef cattle" J. Anim. Sci. 94(E. Suppl. 5) E167

Pauling, Rachel Christine, Speidel, Scott E, Thomas, Milton, Culbertson, Miranda Marguerite, Peel, R. Kraig, Enns, R. Mark, (2016) "Winter climate variables and their effect of feed intake in Bos taurus bulls" J. Anim. Sci. 94(E. Suppl. 5) E606

Culbertson, Miranda Marguerite, Thomas, Milton, Leachman, L. L., Enns, R. Mark, Speidel, Scott E, (2016) "Effect of heterosis on pulmonary arterial pressure in beef cattle" CSU Grad Showcase

Enns, R. Mark, Speidel, Scott E, (2016) "Understanding Cow Maintenance" The American Simmental Register 30 2 22-24

Speidel, Scott E, Enns, R. Mark, (2016) "Report to the Red Angus Association of America. Results of EPD Grouping Strategies for Stayability" Red Angus Association of America

Enns, R. Mark, Speidel, Scott E, (2016) "Growing Profit by Understanding Cow Maintenance Efficiency and Maintenance Requirement in an Animal and Systems Context" Progress on the Prairie: 2016 Beef Improvement Federation Annual Meeting and Symposium 29-35

Enns, R. Mark, Speidel, Scott E, (2016) "Growing profit by understanding cow maintenance efficiency and maintenance requirements in an animal and systems context." Beef Improvement Federation 30-31

Boldt, Ryan John, Speidel, Scott E, Enns, R. Mark, (2016) "Report to the American Gelbvieh Association. Results of analysis for prototype Stayability EPD requiring consecutive carvings." American Gelbvieh Association

Culbertson, Miranda Marguerite, Speidel, Scott E, Enns, R. Mark, (2016) "Report to Leachman Cattle of Colorado. Results of Development of Stayability EPD." Leachman Cattle of Colorado

Culbertson, Miranda Marguerite, Speidel, Scott E, Enns, R. Mark, (2016) "Report to Leachman Cattle of Colorado. Results of Development of Pulmonary Arterial Pressure EPD." Leachman Cattle of Colorado

Speidel, Scott E, (2016) "Report to Zoetis, heritability and genetic correlations between Brahman traits." Zoetis

Blackburn, H., Thomas, Milton, Enns, R. Mark, Speidel, Scott E, Paiva, S., (2015) "A livestock database for long term storage and use of genomic and other associated information" Plant and Animal Genome XXIII Abstract W142

Zeng, Xi, Holt, Timothy N, Enns, R. Mark, Speidel, Scott E, Thomas, Milton, (2015) "Angus cattle at high altitude: Relationship between age and pulmonary arterial pressure" Proc. West. Sect. Am. Soc. Anim. Sci. 66 119-121

Zamorano-Algandar, R., Correa-Calderon, A., Sanchez-Castro, M., Rincon, G., Medrano, J.F., Hernandez, A., Luna-Nevarez, G., Speidel, Scott E, Enns, R. Mark, Thomas, Milton, Luna-Neverez, P., (2015) "Candidate gene molecular breeding value prediction of reproductive performance in Holstein dairy cows managed under heat stress conditions from southern Sonora in Mexico" Proc. West. Sect. Am. Soc. Anim. Sci. 66 249-252

Culbertson, Miranda Marguerite, Speidel, Scott E, Thomas, Milton, Enns, R. Mark, (2015) "Effects of beef cow milk production levels on longevity from Colorado State University’s Beef Improvement Center" Proc. West. Sect. Am. Soc. Anim. Sci. 66 111-113

Hernandez, A., Sanchez-Castro, M., Zamorano-Algandar, R., Luna-Nevarez, P., Rincon, G., Medrano, J.F., Speidel, Scott E, Enns, R. Mark, Thomas, Milton, (2015) "Genotypes within the prolactin and GH-IGF1 pathways association with 305 d milk yield in heat stressed lactating Holstein cows" Proc. West. Sect. Am. Soc. Anim. Sci. 66 114-118

Cockrum, Rebecca, Holloway, C., Zeng, Xi, Crawford, Natalie Faye, Neary, J.M., Holt, Timothy N, Blackburn, H., Speidel, Scott E, Enns, R. Mark, Thomas, Milton, (2015) "Intrinsic response to hypoxic stress associated with cellular metabolism an inflammation in beef cattle." Plant and Animal Genome XXIII Abstract P0169

Crawford, Natalie Faye, Speidel, Scott E, Zeng, Xi, Holt, Timothy N, Thomas, Milton, Enns, R. Mark, (2015) "Multivariate analysis of genetic relationships between pulmonary arterial pressure and performance traits in an Angus herd at high elevation" Proc. West. Sect. Am. Soc. Anim. Sci. 66 126-128

Culbertson, Miranda Marguerite, Speidel, Scott E, Peel, R. Kraig, Cockrum, Rebecca, Thomas, Milton, Enns, R. Mark, (2015) Optimum measurement period for evaluating feed intake traits in beef cattle J. Anim. Sci. 93 1-9

Saad, H.M., Enns, R. Mark, Thomas, Milton, Speidel, Scott E, (2015) "Performance losses due to selection for low birth weight versus calving ease: a simulation study in beef cattle" Proc. West. Sect. Am. Soc. Anim. Sci. 66 129-132

Canovas, A.A., Cockrum, Rebecca, Brown, R.D., Riddle, S.K., Neary, J.M., Holt, Timothy N, Krafsur, Greta M, Medrano, J.F., Islas-Trejo, A., Enns, R. Mark, Speidel, Scott E, Stenmark, K.R., Thomas, Milton, (2015) "Polymorphisms and splice variants in a polygenic disease induced by high-altitude in Angus cattle using RNA-Sequencing and systems biology" Abstr. Soc. Españ. Genética.

Bailey, D.W., Thomas, Milton, Holt, Timothy N, Stephenson, M.B., Enns, R. Mark, Speidel, Scott E, (2015) "Relationships of pulmonary arterial pressure and terrain use of beef cows grazing high-altitude foothills rangeland" Proc. West. Sect. Am. Soc. Anim. Sci. 66 99-103

Dias, M.M., Canovas, A., Mantilla-Rojas, C., Medrano, J.F., Thomas, Milton, Speidel, Scott E, Enns, R. Mark, Rivera-Acuna, F., Luna-Nevarez, P., Riley, D.G., (2015) "Single nucleotide polymorphisms associated with growth, fertility, and first-calf survival traits in Brangus heifers managed under semi-desert extensive conditions in southern Sonora" Tex. A&M University CONACYT (MX) Symposium

Dias, M.M., Canovas, A., Mantilla-Rojas, C., Riley, D.G., Luna-Nevarez, P., Speidel, Scott E, Enns, R. Mark, Dias, I.S.D.P., Souza, F.R.P., Medrano, J.F., Oliveira, H.N., Thomas, Milton, (2015) "SNP query in candidate genes that affect puberty in Bos indicus-influenced heifers" Proc. West. Sect. Am. Soc. Anim. Sci. 66 104-107

Canovas, A., Cockrum, Rebecca, Brown, R.D., Riddle, S.K., Neary, J.M., Holt, Timothy N, Krafsur, Greta M, Garry, Franklyn B, Medrano, J.F., Islas-Trejo, A., Enns, R. Mark, Speidel, Scott E, Stenmark, K.R., Thomas, Milton, (2015) "Transciptomics and systems biology of high altitude disease in Angus cattle" Plant and Animal Genome XXIII Abstract P0310

Boldt, Ryan John, Speidel, Scott E, Thomas, Milton, Enns, R. Mark, (2015) "Variance components for genetic evaluation of body condition score in beef cattle" Proc. West. Sect. Am. Soc. Anim. Sci. 66 108-110

Zeng, Xi, Speidel, Scott E, Enns, R. Mark, (2015) "Report to Powerline Genetics. Incorporation of external sire EPD into growth and carcass evaluations." Powerline Genetics

Boldt, Ryan John, Enns, R. Mark, Thomas, Milton, Speidel, Scott E, (2015) "Report to the Red Angus Association of America. Research Update: Red Angus Next Generation Fertility genetic evaluation" Red Angus Association of America

MacNeil, Michael D, Enns, R. Mark, Newman, Scott, Neilsen, Merlin, Mokolobate, M C, Speidel, Scott E, Scholtz, M M, Cassady, Joe P, (2015) "Background for Guidelines to Facilitate Enhanced Genetic Potentials for Cow Efficiency" 47th Beef Improvement Federation Conference Proceedings

Cockrum, R.R., Zeng, X., Berge, N.F., Neary, J.M., Garry, F.B., Holt, Timothy N, Blackburn, H.D., Thomas, Sean Patrick, Speidel, S.E., Garrick, D.J., Enns, R.M., Thomas, M.G., (2014) "Angus cattle at high altitude: genetic relationships and initial genome wide association analyses of pulmonary arterial pressure" WCGALP

Culbertson, M.M., Speidel, Scott E, Thomas, M.G., Keenan, L., Enns, R.M., (2014) "Effect of genetics level of beef cow milk production on longevity in diverse environments" WCGALP

Speidel, Scott E, S., , Cockrum, Rebecca, Salak-Johnson, J. L., Chase, C. C. L., Thomas, Milton, Peel, R. Kraig, Enns, R. Mark, (2014) "Genetic analysis of receiving weight, ultrasound back fat, ultrasound rib eye area, ultrasound percent intramuscular fat, and bovine respiratory disease in feedlot cattle" WCGALP

Zeng, X., Cockrum, R.R., Berge, N.F., Neary, J.M., Garry, F.B., Holt, Timothy N, Blackburn, H.D., Speidel, S.E., Garrick, D.J., Enns, R.M., Thomas, M.G., (2014) "Genetic correlation and genome wide association study of pulmonary arterial pressure and post weaning growth traits in Angus heifers from a high altitude breeding program" WCGALP

Berge, N.F., Speidel, S.E., Zeng, X., Culbertson, M.M., Thomas, M.G., Enns, R.M., (2014) "Genetic relationships between pulmonary arterial pressure and performance traits in Colorado State University Beef Improvement Center Angus herd" WCGALP

Boldt, R.J., Culbertson, M.M., Berge, N.F., Thomas, M.G., Holt, Timothy N, Speidel, S.E., Enns, R.M., (2014) "Phenotypic analysis of pulmonary arterial pressure and feed intake data in cattle" WCGALP

Welch, Cassie, Speidel, Scott E, Crews, Denny, Ahola, Jason Kee, Hill, Rod A, (2014) "Relationships between maintenance energy EPD and performance measures of progeny from Red Angus sires divergent for maintenance energy EPD" Journal of Animal Science 92 e-suppl 2

Speidel, Scott E, Thomas, Milton, (2013) "Cortisol, interleukin 8, and immunoglobulin G ratios predict treatment for bovine respiratory disease in feedlot cattle. " J Anim Sci 91(E-Suppl. 2):486

Zeng, Xi, Speidel, Scott E, Thomas, Milton, Enns, R. Mark, (2013) "Estimating Economic Values of Traits Belonging to Cattle in Maternal Beef Production. Proc. West. Sect. Am. Soc. An. Sci." American Society of Animal Science