Date of Graduation

Fall 2024

Degree

Master of Science in Agriculture

Department

School of Agricultural Science & Conservation

Committee Chair

Adam McGee

Abstract

Three yearling steers were used in a 2 X 3 incomplete Latin square design to determine In Vivo Dry Matter Digestibility of two forages, alfalfa (ALF) and mixed grass hay (GH) to determine the accuracy of In Vitro Dry Matter Digestibility (IVDMD) methods for determining the true dry matter digestibility (DMD). Forage samples were collected and digested In Vitro using the ANKOM DaisyII Incubator. Forage Fiber Analysis of the residue was used to determine true dry matter digestibility. There was significant interaction between treatment and period (P < 0.05) for both In Vitro and In Vivo methods. When comparing the two methods there was a method by treatment interaction (p = 0.04). The In Vitro method yield higher estimates for both forages than the In Vivo method but the difference between In Vitro and In Vivo estimates was greater for the mixed grass hay.

Keywords

bovine, In Vitro digestion, dry matter digestibility

Subject Categories

Agriculture | Animal Sciences | Beef Science

Copyright

© Katherine Kemper Sanders

Download

Open Access

Share

COinS