You’ll spot it before you know what it is. A cow standing off from the bunch, head down, packing one hind foot and unwilling to put weight on it. Walk her up and she’s dead lame. Get closer and the foot’s swollen up above the hoof, both toes spread apart, and there’s a smell you don’t forget. That’s foot rot, and June is when it starts showing.
It’s a bacterial infection that gets in through broken skin between the claws. The bugs live in the soil and manure and they’re everywhere — the cow doesn’t catch it from another cow so much as she picks it up when the skin gets compromised. That’s why it runs in wet years and around the places cattle pack in: mud holes, the trail to water, the salt ground, gate corners churned to soup. Rock and stubble and dried mud cut the skin between the toes, moisture keeps it soft and open, and the bacteria walk right in.
Why it hits now
Turnout stacks the odds. Cattle that wintered on relatively clean ground get moved onto summer country and start covering miles they haven’t walked since fall. Feet that were soft come up against sharp rock on the ridges and cheatgrass stubble in the draws. Add a wet spring and the low spots stay boggy into June. You’ll see the same thing around a leaky stock tank or a spring development where the ground never dries out.
The tell is that it comes on fast and it’s almost always one foot. A stone bruise or a bad joint builds slower. Foot rot cattle go from sound to three-legged lame in a day or two, and the swelling is even all the way around, up above the hoof head, with the split between the claws opened up and raw. If you get her in and look, there’s dead, stinking tissue down in that crack.
Treat it early or pay for it later
Caught in the first day or two, foot rot is one of the more satisfying things you’ll fix all summer. It responds to antibiotics — talk to your vet about what to use and follow the label and withdrawal times — and a cow treated early is usually walking sound in a few days. Get her in, clean the foot out enough to be sure that’s what you’re dealing with, treat her, and turn her back.
The trouble comes when you let it ride. Once the infection works up into the joint, no amount of antibiotic pulls her out of it, and you’re looking at a chronic, three-legged cow, a foot amputation, or the sale barn. A cow that’s been down lame for a week has also quit grazing and quit breeding, and if you’re still turning bulls or just wrapped up, an open cow costs you a lot more than the shot would have.
The catch is finding her. On big country she’s off by herself, often bedded down in the timber or a coulee where she doesn’t have to walk. That’s the argument for riding through the cattle regularly the first few weeks after turnout instead of trusting them to be fine until you gather. When you’re checking bulls and counting pairs anyway, count feet. A cow that won’t get up and move with the rest is worth a second look.
Getting one in off the far end of a summer pasture is its own project. A three-legged cow doesn’t trail well, and pushing her hard makes the foot worse. If you’ve got portable panels and a good horse, sometimes it’s easier to treat her where she stands than to bring her four miles to the corral. Plan for that before you’re standing there looking at her.
Cut down the odds
You can’t sterilize a pasture, but you can quit making the wet churned-up spots worse. Move salt and mineral off the boggy ground and onto high, dry benches — that pulls the herd’s loafing away from the mud and does double duty spreading their grazing. Fix the tank that’s been overflowing and turning the ground around it to a hole. If you’ve got a stretch of trail to water that’s a rock garden or a mud bog, it’s worth knowing that’s where feet get cut.
Zinc in the mineral is thought to help feet stay tough, and a good year-round mineral program doesn’t hurt. But the honest answer is that in a wet June, some foot rot is coming no matter what. The win isn’t preventing every case — it’s finding the lame ones early, before a cheap problem turns into a cull.
