I grew up in the small, rural town of Webster City, located in north-central Iowa. My mom's
side of the family had a diversified swine and row crop operation that played a pivotal role
in providing me the opportunity to interact with livestock from a young age - even though I
was a "city boy"! During high school, I started working at a small family pig farm near my
hometown, which set me on the path to where I am today. The farm was a 600-sow farrow-to-finish
operation that I worked on during the summer months and weekends when school was in session.
After graduating from high school, I attended Iowa State University, where I majored in Animal
Science with a minor in Genetics. Throughout college, I had various swine internship jobs and
had the opportunity to work at the Iowa State University Swine Testing Station.
All of those long days in the hog barns shaped the type of person I am today. The values
and work habits that were "power-washed" into me have transferred to all facets of my life.
A few of the values that really stand out and help motivate me are that a day is finished
when all the tasks that need to be done are completed, not according to the time on the
clock. Some of the work you do may not be the most glamorous or exciting (power-washing
barns at the top of the list!), but it has to be done, and if you keep in mind the end
result, you can make anything worthwhile.
Very early on, this became apparent when I was working in the farrowing barn and was
able to bring a piglet back to life that, when farrowed, was not alive. Most importantly,
having worked within the field for many years has generated a great deal of passion in me
to ensure that younger kids are able to reap the lifelong advantages that I have benefited
from by working within the swine industry. Although I may not have as much of a hands-on feel
to the industry as I used to, working on projects that are for the advancement of the
industry keeps me motivated. At a time when animal agriculture is being portrayed unfavorably,
I hope this provides some perspective on seeing the swine industry in a different light and
its impact on a young person's life.
After graduating from Iowa State, I earned a Master's degree and PhD in Animal Breeding
and Genetics from the University of Nebraska and North Carolina State University, respectively.
I am extremely thankful to my advisors, Dr. Spangler and Dr. Maltecca, who provided me with
challenging projects that made it evident to me that I have found my passion at the intersection
of animal science/genetics and computer science. As with anything new, I learned to jump into
new topics, projects, or coding languages headfirst and try to learn as much as possible.
After obtaining my PhD, I completed a one-year post-doc position and then started as a
geneticist for Smithfield Premium Genetics. I worked as a geneticist for around three years
before transferring to an Analytics role within the Smithfield finance group. The varying
roles I've held over the past six years have provided me with a good understanding of the
financial drivers of swine production and how they relate to a swine breeding company's
selection objectives.
The main reason I created this web page is that I found very little information on
"starter code" to get me started on topics such as calculating pedigree or genomic
relationships, sorting pedigrees, or other computational tricks. Hopefully, this page
will at least provide some motivation for you to jump into learning more about the
background on algorithms that make commonly used animal breeding models work,
along with a mix of other algorithms. In general I use R and python for the majority of
coding projects, but I am profecient in C++, linux and SQL. If you have any questions,
comments, or suggestions, please contact me at jeremy.howard06@gmail.com.
Outlined below is a little bit more about my education and publication list from graduate school for some background on my current/previous research
interests and the following link is my CV.
Education
- University of Nebraska-Lincoln (Post-Doc)
- Implementation of single step genomic BLUP (ssGBLUP) in a swine breeding program
- Advisor: Dr. Matt Spangler.
- North Carolina State University (Ph.D.) Animal Science (2017)
- Utilizing Genomic Information to Manage the Diversity and Minimize the Unfavorable Effects of Inbreeding in Livestock Populations..
- Advisor: Dr. Christian Maltecca.
- North Carolina State University (M.S.) Statistics (2017)
- University of Nebraska-Lincoln (M.S.) Animal Science (2012)
- The Impact of Genetic Background on Body Temperature Regulation in Beef Cattle During Periods of Heat and Cold Stress.
- Advisor: Dr. Matt Spangler.
- Iowa State University (B.S.): Animal Science major and Genetics minor (2010)
Publications
- Post-Doc
- Howard, J. T., W. Abbas, H. A. Paz, K. E. Hales, J. E. Wells, L. A. Kuehn, M. L. Spangler, G. E. Erickson, S. C. Fernando. 2020. Influence of host genetics in shaping the rumen bacterial community in beef cattle. Scientific Reports.
- Howard, J. T., T. A. Rathje, C. E. Bruns, D. F. Wilson-Wells, S. D. Kachman & M. L. Spangler. 2018. The impact of selective genotyping on the response to selection using single-step genomic best linear unbiased prediction. Journal of Animal Science 96(11): 4532-4542.
- Howard, J. T., T. A. Rathje, C. E. Bruns, D. F. Wilson-Wells, S. D. Kachman & M. L. Spangler. 2018. The impact of truncating data on predictive ability for single-step genomic best linear unbiased prediction. Journal of Animal Breeding Genetics 135(4):251-262.
- Ph.D.
- Howard, J. T., R. E. Baynes, J. D. Brooks, J. L. Yeatts, M. S. Ashwell & C. Maltecca. 2018. Genetic parameter estimates for metabolizing two common pharmaceuticals in swine. Frontiers in Genetics 9:40
- Howard, J. T., F. Tiezzi, Y. Huang, K.A. Gray, C. Maltecca. 2017. A heuristic method to identify runs of homozygosity associated with reduced performance in livestock. Journal of Animal Science 95(10): 4318-4332.
- Howard, J. T., F. Tiezzi, J.E. Pryce, C. Maltecca. 2017. A combined coalescence forward in time simulator software for pedigreed populations undergoing selection for complex traits. Journal of Animal Breeding Genetics 134(6):553-563.
- Howard, J. T., J. E. Pryce, C. Baes, C. Maltecca. 2017. Inbreeding, inbreeding depression, and management of genomic variability in the genomic era. Journal of Dairy Science 100(8):6009-6024.
- Howard, J. T., R. E. Baynes, J. D. Brooks, J. L. Yeatts, M. S. Ashwell, C. Maltecca. 2017. Gene co-expression network analysis identifies porcine genes associated with variation in metabolizing fenbendazole and flunixin meglumine. Scientific Reports 7(1):1357.
- Howard, J. T., F. Tiezzi1, Y. Huang, K.A. Gray, C. Maltecca. 2016. The use of alternative genomic metrics in nucleus herds to manage the diversity of purebred and crossbred animals. Genetic Selection Evolution 48:91.
- Howard, J. T., M. Haile-Mariam, C. Maltecca, J. E. Pryce. 2015. Characterizing Regions Impacting Inbreeding Depression Across United States and Australian Jersey cow populations. BMC Genomics 16:813.
- Howard, J. T., A. T. O’Nan, C. Maltecca, R. E. Baynes, M. S. Ashwell. 2015. Differential gene expression across breed and sex in commercial pigs administered fenbendazole and flunixin meglumine. PLOS One 10(9):e0137830.
- Howard, J. T., M. Haile-Mariam, C. Maltecca, B. J. Hayes & J. E. Pryce. 2015. Characterizing homozygosity across United States, New Zealand and Australian Jersey cow and bull populations. BMC Genomics, 16(1):187.
- Howard, J. T., S. Jiao, F. Tiezzi, Y. Huang, K. A. Gray, C. and C. Maltec- ca. 2015. Genome-Wide Association Study on Legendre Random Regression Coefficients for Growth and Feed Intake on Duroc Boars. BMC Genetics, 16(1): 59.
- Howard, J. T., R. E. Baynes, J. D. Brooks, J. L. Yeatts, B. Bellis, M. S. Ashwell, P. Routh, A. T. O’Nan & C. Maltecca. 2014. The effect of breed and sex on Sulfamethazine, Enrofloxacin, Fenbendazole and Flunixin pharmacokinetic parameters in swine. Journal of Veterinary Pharmacology and Therapeutics, 37(6): 531-541.
- M.S.
- Howard, J. T., S. D. Kachman, W. M. Snelling, E. J. Pollak, D. C. Ciobanu, L. A. Kuehn & M. L. Spangler. 2014. Beef cattle body temperature during climatic stress: A genome wide association study. International Journal of Biometeorology, 58(7): 1665-1672.
- Howard, J. T., S. D. Kachman, M. K. Nielsen, T. L. Mader & M. L. Spangler. 2013. The effect of Myostatin genotype on body temperature during extreme temperature events. Journal of Animal Science, 91(7): 3051-3058.