%0 Journal Article
%T Evaluation of Ruminal Dry Matter Disappearance and pH of Dry Corn, High-Moisture Corn, and Rye under <i>in Vitro</i> Conditions
%A Warren Carl Rusche
%A Zachary Kidd Foster Smith
%J Agricultural Sciences
%P 327-332
%@ 2156-8561
%D 2024
%I Scientific Research Publishing
%R 10.4236/as.2024.153019
%X An <em>in vitro</em> experiment was conducted to evaluate the effects of grain type on<em> in vitro</em> dry matter disappearance (IVDMD) and pH using ruminal fluid and a buffer reagent. Five beef cows were used for ruminal fluid collection and ruminal fluid was pooled prior to use. The cows used for ruminal fluid collection were maintained on a forage-based diet (60:40 forage to concentrate) for 28 d prior to ruminal fluid collection. Three grain types were evaluated: 1) dry corn (89% dry matter; DRC), 2) high-moisture corn (72% dry matter; HMC) and 3) rye (89% dry matter; RYE). Data were analyzed as a completely randomized design. A total of twenty-one replications of each grain type were used for statistical analysis (n = 63 tubes total). IVDMD was greater (<em>P</em> ¡Ü 0.05) by 97.1% and 46.4% for RYE compared to DRC and HMC, respectively.  Additionally, IVDMD was greater (<em>P</em> = 0.05) by 34.6% for HMC compared to DRC. Final pH was decreased (<em>P</em> ¡Ü 0.05) for RYE by 12.3% and 2.8% for RYE compared to DRC and HMC, respectively. Also, final pH was decreased (<em>P</em> = 0.05) by 9.8% for HMC compared to DRC. These data indicate that corn harvest method (dry vs. high-moisture) influences IVDMD and final pH and that rye has a greater disappearance of dry matter and lower final pH than corn under <em>in vitro</em> conditions.
%K Corn
%K Grain Processing
%K Ruminal Fermentation
%K Rye
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=132181