The study looked at how the number of cows grazing on stored forage and adding corn gluten feed to their diet affected the cows' performance during winter. The researchers found that having more cows grazing on the forage led to lower weight gains in the cows. However, supplementing their diet with corn gluten feed helped improve their weight gains, especially for cows with lower body condition scores. So, having fewer cows grazing and giving them corn gluten feed can help improve the performance of two-year-old cows during winter.