Shanna L. Ivey

Department Head/Professor: Animal Science Department | (575) 646-2515


Research Area: Investigation of novel means to assess nitrogen status of ruminants grazing native range. Development of strategies to detoxify plant and environmental toxin.

The central objective of my research program is to understand the effect of different  dietary constituents including biofuel co-products on rumen microbial ecology and the subsequent impact on animal production. My research program has focused in three areas: 1) the influence of feedstuffs on rumen microbial ecology, 2) impact of the host microbiome on animal performance, and 3) understanding how and what impacts rumen bacteria communication and migration. We use a variety of techniques that involve tightly controlled in vitro and molecular biology studies with pure cultures of ruminal bacteria and animal metabolism models. We also work closely with Dr. Tanner Schaub’s analytical chemistry laboratory study metabolites and quorum sensing molecules. Additionally, in an effort to mentor a young faculty colleague I have participated in horse research projects looking at the effect of age on glucose metabolism and hind gut bacterial metagenome. Additionally, we are in the process of validating external markers (chromic oxide and titanium dioxide) in horses to use in determination of feed digestibility.

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