Livestock Nutrition Research Program

Dr. Travis Whitney, Project Leader

RESEARCH FOCUS:

This interdisciplinary research program is directed toward helping livestock producers make informed management decisions related to feeding livestock.  The primary objective is to reduce costs associated with feeding livestock by: 1) increasing livestock production efficiency; 2) increasing the value of underutilized feed sources such as dried distillers grains and ground juniper and mesquite trees; and 3) using plant secondary compounds to enhance ruminal function, bypass protein, and animal health, and reduce internal parasite viability. Secondary objectives are to enhance animal fiber, carcass, and meat characteristics.

 

MOST RECENT PEER-REVIEWED ARTICLES: (* denotes graduate student)

In press

  • Whitney, T. R. 2017. Ground redberry juniper and urea in supplements fed to Rambouillet ewe lambs. Part I: growth, serum chemistry, and fecal N. J. Anim. Sci. In Press

 Submitted, Under Revision

  • Ishaq, L., C. J. Yeoman, and T. R. Whitney. 2017. Ground redberry juniper and urea in supplements fed to Rambouillet ewe lambs. Part II: Ewe lamb rumen microbial communities. J. Anim. Sci.
  • *Stewart, W. C., T. RWhitney, E. J. Scholljegerdes, D. M. Hallford, J. W. Walker, R. P. Adams, and H. D. Naumann. 2017. Effects of feeding ground redberry juniper (Juniperus pinchotii) to gestating ewes on pre- and postpartum performance, serum metabolites and hormones, milk fatty acid composition and progeny preweaning performance. J. Anim. Sci.
  • Whitney, T. R., *J. L. Glasscock, J. P. Muir, W. C. Stewart, and E. J. Scholljegerdes. 2017. Substituting ground woody plants for cottonseed hulls in lamb feedlot diets: growth performance, blood serum chemistry, and rumen fluid parameters. J. Anim. Sci.

In Preparation

  • Kerth, C. R., K. R. Wall, S. B. Smith, T. R. Whitney, *J. L. Glasscock, and J. T. Sawyer. 2017. Substituting ground woody plants for cottonseed hulls in lamb feedlot diets: Carcass characteristics, adipose tissue fatty acid composition, and sensory panel traits.
  • *Glasscock, J. L., T. R. Whitney, et al. 2017. Use of ground juniper to reduce feral hog consumption.
  • *Glasscock, J. L., T. R. Whitney, et al. 2017. Substituting ground woody plants for cottonseed hulls in goat feedlot diets: growth performance and blood serum chemistry.
  • Whitney T. R., J. T. Sawyer, and C. Hartz. 2017. Substituting ground juniper for ground alfalfa hay in steer feedlot diets: growth and blood serum characteristics.
  • Murphy, T. W., *W. C. Stewart, T. R. Whitney, J. A. Boles, C. R. Kerth, and R. K. Miller. 2017. Sire breed, harvest age, and diet effects on the flavor profile and consumer acceptance of American lamb.

 

MOST RECENT PROCEEDINGS, ABSTRACTS, REPORTS:

  • Whitney, T. R., and J. P. Muir 2016. Ground redberry juniper and urea in supplements fed to Rambouillet ewe lambs on growth, blood serum, and fecal N. Amer. Soc. Anim. Sci. Salt Lake City, UT. July 21. Abstract and Oral Presentation by Whitney. J. Anim. Sci. 94:E-suppl. 5:1675.
  • Ishaq, S. L., Yeoman, and T. R. Whitney. 2016. Ground redberry juniper and urea in DDGS-based supplements do not adversely affect ewe lamb rumen microbial communities. Amer. Soc. Anim. Sci. Salt Lake City, UT. July 21. Abstract. Oral Presentation by Ishaq. J. Anim. Sci. 94:E-suppl. 5:1678.
  • *Wall, K. R., C. R. Kerth, T. R. Whitney, S. B. Smith, *J. L. Glasscock, and J. T. Sawyer. 2016. Fatty acid profile, sensory traits, and aromatic compounds of chops from lambs fed ground woody plants as roughage in feedlot finishing diets. Amer. Soc. Anim. Sci. Salt Lake City, UT. July 21. Abstract and Oral Presentation by Wall. J. Anim. Sci. 94:E-suppl. 5:1679.
  • *Stewart, W. C., T. R. Whitney, E. J. Scholljegerdes, D. F. Waldron, J. W. Walker, and J. M. B. Musser. 2016. Effects of selection for high and low juniper-consuming goats on rumen fermentation characteristics. Amer. Soc. Anim. Sci. Salt Lake City, UT. July 21. Abstract and Oral Presentation by Stewart. J. Anim. Sci. 94:E-suppl. 5:1677.
  • *Glasscock, J. L., T. R. Whitney, and D. G. Hewitt. 2016. Use of ground juniper in a deer supplement to prevent non-target species consumption. Caesar Kleberg Wildlife Research Institute Res. Briefs. Abstract.
  • Whitney, T. R. 2016. Submitting higher-quality research publications. Southern Sect. Amer. Soc. Anim. Sci. San Antonio, TX. Feb. 9. Oral Presentation. Invited
  • Whitney, T. R. 2017. Underutilized feed resources. TX A&M AgriLife Research and US Forest Service Conference: Strategic Supplementation Strategies to Enhance Texas Rangelands and Reduce Livestock Production Costs. Kerrville, TX. May 12. Oral Presentation.
  • Whitney, T. R. 2017. Economic feasibility of using ground juniper in livestock diets. TX A&M AgriLife Research and US Forest Service Conference: Strategic Supplementation Strategies to Enhance Texas Rangelands and Reduce Livestock Production Costs. Kerrville, TX. May 12. Oral Presentation.
  • Whitney T. R., J. T. Sawyer, and C. Hartz. 2017. Substituting ground juniper for ground alfalfa hay in steer feedlot diets: growth and blood serum characteristics. Proceedings paper. West. Sec. Amer. Soc. Anim. Sci. Fargo, ND. Oral Presentation by Whitney.
  • Whitney, T. R. 2017. Challenges vs. opportunities of various supplemental feeds. 44th Annual TX AgriLife Sheep and Goat Field Day. San Angelo, TX. Aug. 18. Oral Presentation. Invited
  • Whitney, T. R. 2016. Texas A&M AgriLife Research Nutrition Program Update. NCERA-190 Annual Meeting, San Angelo, TX. Oral Presentation and Proceedings. Invited
  • Whitney, T. R. 2017. Ground redberry juniper and urea in supplements fed to Rambouillet ewe lambs. Part 1: Growth, blood serum and fecal characteristics. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Ground redberry juniper and urea in supplements fed to Rambouillet ewe lambs. Part 2: Ewe lamb rumen microbial communities. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Substituting ground woody plants for cottonseed hulls in lamb feedlot diets: growth performance, blood serum chemistry, and rumen fluid parameters. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Substituting ground woody plants for cottonseed hulls in lamb feedlot diets: Carcass characteristics, adipose tissue fatty acid composition, and sensory panel traits. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Effects of using ground woody plants in kid goat feedlot diets on growth performance. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Effects of feeding ground redberry juniper (Juniperus pinchotii) to gestating ewes on pre- and postpartum performance, serum metabolites and hormones, milk fatty acid composition and progeny preweaning performance. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Texas A&M AgriLife Research Nutrition Program’s Extension and Service Efforts. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. The use of ground redberry and blueberry juniper as a ruminant livestock feed ingredient. Submitted to the Office of the Texas State Chemist (OTSC).
  • Whitney, T. R. 2017. Food Use Authorization Request: Use of ground redberry and blueberry juniper as a ruminant livestock feed ingredient. Submitted to and approved by FDA.

 

MOST RECENT PRESENTATIONS & CONFERENCES

  • Whitney, T. R., and J. P. Muir 2016. Ground redberry juniper and urea in supplements fed to Rambouillet ewe lambs on growth, blood serum, and fecal N. Amer. Soc. Anim. Sci. Salt Lake City, UT. July 21. Abstract and Oral Presentation by Whitney. J. Anim. Sci. 94:E-suppl. 5:1675.
  • Ishaq, S. L., Yeoman, and T. R. Whitney. 2016. Ground redberry juniper and urea in DDGS-based supplements do not adversely affect ewe lamb rumen microbial communities. Amer. Soc. Anim. Sci. Salt Lake City, UT. July 21. Abstract. Oral Presentation by Ishaq. J. Anim. Sci. 94:E-suppl. 5:1678.
  • *Wall, K. R., C. R. Kerth, T. R. Whitney, S. B. Smith, *J. L. Glasscock, and J. T. Sawyer. 2016. Fatty acid profile, sensory traits, and aromatic compounds of chops from lambs fed ground woody plants as roughage in feedlot finishing diets. Amer. Soc. Anim. Sci. Salt Lake City, UT. July 21. Abstract and Oral Presentation by Wall. J. Anim. Sci. 94:E-suppl. 5:1679.
  • *Stewart, W. C., T. R. Whitney, E. J. Scholljegerdes, D. F. Waldron, J. W. Walker, and J. M. B. Musser. 2016. Effects of selection for high and low juniper-consuming goats on rumen fermentation characteristics. Amer. Soc. Anim. Sci. Salt Lake City, UT. July 21. Abstract and Oral Presentation by Stewart. J. Anim. Sci. 94:E-suppl. 5:1677.
  • Whitney, T. R. 2016. Submitting higher-quality research publications. Southern Sect. Amer. Soc. Anim. Sci. San Antonio, TX. Feb. 9. Oral Presentation. Invited
  • Whitney, T. R. 2017. Underutilized feed resources. TX A&M AgriLife Research and US Forest Service Conference: Strategic Supplementation Strategies to Enhance Texas Rangelands and Reduce Livestock Production Costs. Kerrville, TX. May 12. Oral Presentation.
  • Whitney, T. R. 2017. Economic feasibility of using ground juniper in livestock diets. TX A&M AgriLife Research and US Forest Service Conference: Strategic Supplementation Strategies to Enhance Texas Rangelands and Reduce Livestock Production Costs. Kerrville, TX. May 12. Oral Presentation.
  • Whitney T. R., J. T. Sawyer, and C. Hartz. 2017. Substituting ground juniper for ground alfalfa hay in steer feedlot diets: growth and blood serum characteristics. Proceedings paper. West. Sec. Amer. Soc. Anim. Sci. Fargo, ND. Oral Presentation by Whitney.
  • Whitney, T. R. 2017. Challenges vs. opportunities of various supplemental feeds. 44th Annual TX AgriLife Sheep and Goat Field Day. San Angelo, TX. Aug. 18. Oral Presentation. Invited
  • Whitney, T. R. 2016. Texas A&M AgriLife Research Nutrition Program Update. NCERA-190 Annual Meeting, San Angelo, TX. Oral Presentation and Proceedings. Invited
  • Whitney, T. R. 2017. Ground redberry juniper and urea in supplements fed to Rambouillet ewe lambs. Part 1: Growth, blood serum and fecal characteristics. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Ground redberry juniper and urea in supplements fed to Rambouillet ewe lambs. Part 2: Ewe lamb rumen microbial communities. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Substituting ground woody plants for cottonseed hulls in lamb feedlot diets: growth performance, blood serum chemistry, and rumen fluid parameters. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Substituting ground woody plants for cottonseed hulls in lamb feedlot diets: Carcass characteristics, adipose tissue fatty acid composition, and sensory panel traits. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Effects of using ground woody plants in kid goat feedlot diets on growth performance. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Effects of feeding ground redberry juniper (Juniperus pinchotii) to gestating ewes on pre- and postpartum performance, serum metabolites and hormones, milk fatty acid composition and progeny preweaning performance. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.
  • Whitney, T. R. 2017. Texas A&M AgriLife Research Nutrition Program’s Extension and Service Efforts. NCERA-214 Annual Meeting, Lansing, MI. Oral Presentation and Proceedings.

 

CURRENT & UPCOMING PROJECTS:

Current Projects

  1. Whitney T. R., J. T. Sawyer, and C. Hartz. Substituting ground juniper for ground alfalfa hay in steer feedlot diets: growth and blood serum characteristics.
  2. Murphy, T. W., *W. C. Stewart, T. R. Whitney, J. A. Boles, C. R. Kerth, and R. K. Miller. Sire breed, harvest age, and diet effects on the flavor profile and consumer acceptance of American lamb.

Upcoming Projects

  1. In vitro nutrient, digestive, and fiber characteristics of various livestock roughage ingredients used in feedlot cattle diets.
  2. Effects of using ground juniper in supplements fed to gestating cows on pre- and postpartum performance, serum metabolites and hormones, milk fatty acid composition, and progeny preweaning performance.

 

 

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