Moldy hay, if fed to your rabbits, can literally threaten their lives.
Aurora Rex Rabbit Ranch was running some feed experiments,
so we had a young litter of rabbits in a large test pen on the ground.
At first the animals ate the fresh grass growing in the caged area.
When the grass ran out, we threw in copious amounts of hay and straw. In fact, the rabbits could hardly see the ground.
Then winter hit in Western Washington, where we get buckets of rain from November through February.
The old hay in the pen began to mold. And because we kept giving the bunnies huge amounts of fresh, sweet hay, it did not dawn on me that the rabbits would also eat the older, moldy hay -- until one bunny stopped eating and drinking altogether, and then died. (True, I’m not SURE it was the mold, but...!)
I felt pretty sorry! Rabbits burrow. They get exposed to the old hay, even though they have tons of fresh hay all around them.
The remaining youngsters are doing well because I put them
back into their regular hanging cages inside the barn. We’ve also redesigned our experiments.
More often, a rabbit gets exposed to mold when keepers try to save money by using up old hay or feed.
We learned the hard way that mold is not healthy for rabbits:
Old Hay doesn't necessarily mean moldy
hay.
If you've stored it
in a dry, well-covered container, it can last for months. It's when moisture gets into your hay
that the mold can grow.
You’ll potentially lose your rabbits.
Just pitch all moldy hay, straw or feed. It makes great garden mulch.
Better to figure out how the feed or hay got moldy in the first place and then prevent the mold going forward.
Are you questioning the quality of your hay? Try sticking your nose into it and taking a gentle whiff. You can smell the mold once it becomes established. Or, the sweet smell is gone, and you may see black spots on the stems. If really bad, you'll see entire areas that are black with white fuzz growing in the darkest areas.
Warning: the smell test is not fool-proof.
Mold can be present without any moldy odor. When in doubt, take a sample of hay to your vet, USDA extension agent, or an agricultural lab and have it tested for mold.
Store bales under a water-tight roof on wooden pallets. I also like to throw a tarp over the bales just in case.
Once you've broken into a bale, you might like to store loose hay or straw in covered plastic garbage cans. Keep the lids on the cans when you're not using the hay. Be sure the lids aren't so tight that they can seal moisture IN.
Enjoy your rabbits!
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