Oct 6, 2026 · 7 min · 7 segments
Dr. Joel Franks of Zoetis explains why preventing mastitis matters, noting that one clinical case in the first 60 days can cost a cow 1,000 pounds of milk over her lactation. In this interview, he…
But, uh, to set, uh, a bar, uh, what we lost, if that cow gets a clinical mastitis in the first 60 days, the rest of her lactational curve is hit by 1,000 pounds.
And many people think, "Oh, yeah, I lost milk on her with that clinical in the first 60 days 'cause I had to take her out of, out of the tank and had to treat her and she dropped a little bit, but she came back." No, that lactational curve is hit for 1,000 pounds.
That being said, same scenario, you got this cow come in with a subclinical mastitis.
Milk even looks good, but until you test, you find that her cell count is over 200,000.
So your word prevent is how can we do that? And it goes back, I'm coining somebody's wise words, but her next lactation starts when we dry her off.
But, uh, to set, uh, a bar, uh, what we lost, if that cow gets a clinical mastitis in the first 60 days, the rest of her lactational curve is hit by 1,000 pounds.
And many people think, "Oh, yeah, I lost milk on her with that clinical in the first 60 days 'cause I had to take her out of, out of the tank and had to treat her and she dropped a little bit, but she came back." No, that lactational curve is hit for 1,000 pounds.
That being said, same scenario, you got this cow come in with a subclinical mastitis.
Milk even looks good, but until you test, you find that her cell count is over 200,000.
So your word prevent is how can we do that? And it goes back, I'm coining somebody's wise words, but her next lactation starts when we dry her off.
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