Lameness is one of the most expensive diseases a dairy cow can get. But, have you ever thought about the cost of lameness being different for different cows? Not only does the type of disease-causing lameness change the cost, but so does the age of the cow and the point in lactation that lameness occurs. To explore these relationships, we built a simulation model to evaluate the cost of lameness by disease type, parity, and timing of incidence (days in milk or DIM) in a typical U.S. dairy herd.

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