Effect of ensiled alpha-amylase enabled corn grain at two concentrations in the diet on lactation performance, chewing activity, ruminal fermentation, nutrient digestibility and nitrogen partition of dairy cows.

This experiment evaluated the effect of α-amylase enabled corn (AAC) on cows fed ensiled mature kernels at 2 concentrations in the diet. Twenty individually housed Holstein cows, arranged in 4 × 4 Latin squares (with 21-d periods), were exposed to each of 4 treatments in a 2 × 2 factorial combination of corn concentration (C): High (28.7% starch, 24.