Component feeding is a feeding system in which animals receive feed in other ways than in a TMR (e.g., feeding forage and concentrate as separate components). Top dress is an example of component feeding where animals generally receive monensin in a small amount of feed added on top of the animals’ usual ration. Q: What is the approved monensin concentration in Type C medicated feed intended for dairy cow component feeding (including top dress)? A: The approved monensin concentration in Type C medicated feed is between 11 and 400 g/ton (as is basis). Q: The regulation also states that the Type C medicated feed must be fed in a minimum of 1 lb of feed to provide 185 to 660 mg/head/day monensin to lactating cows or 115 to 410 mg/head/day monensin to dry cows; does this mean that one chooses whether to follow the g/ton or the mg/head/day requirement? A: No. The label must carry, and the user must comply with, both the g/ton (11 to 400 g/ton) and mg/head/day (185 to 660 mg/head/day monensi