Cattle should never eat moldy or stale bread, since the mold can create harmful chemicals called mycotoxins that can cause respiratory diseases and other illnesses in cows.

What can calves eat?

For the first two weeks of life, calves receive most of their nutrition from milk. From four days of age, calves can be fed either whole milk, waste milk, reconstituted milk replacer, or fermented or fresh colostrum (Table 3).

Can bread cause bloat in cows?

As the wheat plants break winter dormancy, the proportion of forage components during this rapid growth phase can contribute to the rumen digestion, producing a frothy foam. With rapid fermentation and conditions to produce a froth covering in the rumen, fermentation gas is trapped and bloat occurs.