Increased milk production efficiency*

Rumensin is the only FDA-approved feed ingredient for lactating and dry cows that increases milk production efficiency* by delivering more milk per pound of feed while maintaining milk’s natural wholesomeness.

Cows have different needs at different stages. Early lactation cows crave additional energy to support higher production. Late lactation counterparts need less feed to maintain production and pregnancies. Regardless of the feedstuffs for lactating and dry cows, Rumensin helps cows get more energy from every pound of feed.

Important safety information

The label contains complete use information, including cautions and warnings. Always read, understand and follow the label and use directions. Consumption by unapproved species or feeding undiluted may be toxic or fatal. Do not feed to veal calves.

Dosage/Use Levels

Dairy cows

For increased milk production efficiency (production of marketable solids-corrected milk per unit of feed intake).

Feeding Directions

Total Mixed Rations (“complete feed”): Feed continuously to dry and lactating dairy cows a total mixed ration (“complete feed”) containing 11 to 22 g/ton monensin on a 100% dry matter basis.

Component Feeding Systems (including top dress): Feed continuously to dry and lactating cows a Type C Medicated Feed containing 11 to 400 g/ton monensin. The Type C Medicated Feed must be fed in a minimum of 1 pound of feed per cow per day to provide 185 to 660 mg/head/day monensin to lactating cows or 115 to 410 mg/head/day monensin to dry cows. This provides cows with similar amounts of monensin they would receive by consuming total mixed rations containing 11 to 22 g/ton monensin on a 100% dry matter basis.

1. Symanowski, J., Green, H., Wagner, J. et al. 1999. “Milk production and efficiency of cows fed monensin.” J. Dairy Sci. (Suppl. 1): 82. (Abstr.),

* Production of marketable solids-corrected milk per unit of feed intake.

USDBURUM00155(1)

For Safety Data Sheet (SDS) contact 888-545-5973