Will pigs get poisoned if they are fed sweet potatoes cooked and left overnight?

Will pigs get poisoned if sweet potatoes are cooked and left overnight before feeding? After harvesting the sweet potatoes from the field and bringing them home, they are boiled and fed to the pigs. One cooking is meant to feed them several times. Will it cause poisoning? Thank you all for your guidance.
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It will not cause poisoning.

Ye Zhiqiu added the following on 2009-11-27 18:10

It will not cause poisoning.
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Sweet potatoes will not, but sweet potato vines are hard to say.
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It will not, feed with confidence.