Effects of an Oral Supplement Containing Calcium and Live Yeast on Circulating Calcium and Production Parameters Following I.V. Lipopolysaccharide Infusion in Dairy Cows
- Mohmmad Al-Qaisi (Iowa State University)
- Sara Kvidera (Iowa State University)
- Erin Horst (Iowa State University)
- Carrie Shouse (Iowa State University)
- Johana Mayorga (Iowa State University)
- Nathan Upah (TechMix, LLC)
- Denny MacKilligan (TechMix, LLC)
- Leo L. Timms (Iowa State University)
- Lance H. Baumgard (Iowa State University)
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 and live yeast can increase feed intake. Whether supplemental live yeast and 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. Providing an oral supplement containing Ca and live yeast prior to and following LPS administration markedly ameliorated the LPS-induced hypocalcemia and improved DMI and milk yield. Overall, utilizing an oral supplement may be a valuable management strategy to improve animal welfare and productivity during and following immunoactivation. Additionally, infusing i.v. LPS appears to be an effective technique to model hypocalcemia and to evaluate dietary strategies aimed at increasing circulating calcium in lactating dairy cows.
How to Cite:
Al-Qaisi, M., Kvidera, S., Horst, E., Shouse, C., Mayorga, J., Upah, N., MacKilligan, D., Timms, L. L. & Baumgard, L. H., (2018) “Effects of an Oral Supplement Containing Calcium and Live Yeast on Circulating Calcium and Production Parameters Following I.V. Lipopolysaccharide Infusion in Dairy Cows”, Iowa State University Animal Industry Report 15(1). doi: https://doi.org/10.31274/ans_air-180814-301
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