ABSTRACT This survey was conducted to assess the fermentation profile and nutritional composition of tropical grass silages on beef farms. Grass silage samples were collected from 51 beef cattle operations located in four Brazilian states (MT, MS, SP, and PR). Additionally, a questionnaire about silage production and utilization was completed. The lack of correlation between the concentration of n-butyric acid and the IVDMD (P = 0.368) indicated that fermentation pattern and nutritional value were independent and therefore required separate grouping […]