The effects of an oral supplement containing calcium and live yeast on circulating calcium and production following IV lipopolysaccharide infusion in dairy cows

Authors

  • M. Al-Qaisi Department of Animal Science, Iowa State University, Ames, IA 50011
  • J. A. Ydstie Department of Animal Science, Iowa State University, Ames, IA 50011
  • S. K. Kvidera Department of Animal Science, Iowa State University, Ames, IA 50011
  • E. A. Horst Department of Animal Science, Iowa State University, Ames, IA 50011
  • C. S. Shouse Department of Animal Science, Iowa State University, Ames, IA 50011
  • N. C. Upah TechMix, LLC, Stewart, MN 55385
  • D. M. Mckilligan TechMix, LLC, Stewart, MN 55385
  • L. H. Baumgard Department of Animal Science, Iowa State University, Ames, IA 50011

DOI:

https://doi.org/10.21423/aabppro20173332

Keywords:

lipopolysaccharide, calcium, milk yield, feed intake, immune system, oral supplement, dairy cattle

Abstract

Administrating lipopolysaccharide (LPS) decreases circulating calcium (Ca) and markedly reduces both feed intake and milk yield in lactating cows. Calcium is involved in immune system activation, but whether supplemental Ca benefits immune-challenged cows remains unclear. Therefore, study objectives were to evaluate if providing an oral supplement containing soluble Ca, live yeast and other micronutrients would ameliorate LPS-induced hypocalcemia and production parameters in lactating dairy cows.

Cover image of the 50th Conference Proceedings: Text of "AABP Annual Conference" with the AABP logo superimposed over an interlocking 50. Yellow background.

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Published

2017-09-14

Issue

2017

Section

Research Summaries

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