Cold cow syndrome is an unusual disease of unknown cause, which usually occurs in early spring in lactating cows grazing ryegrass pastures.
It has been seen in most areas of the UK. The syndrome can affect up to 80% of a group of cows. The most likely cause is the intake of very high levels of soluble carbohydrates, but other suggestions include oestrogenic compounds in the plants and mycotoxins. There does not appear to be any link with weather conditions.
1) The problem may occur on the same pasture each year, thus avoiding the use of that pasture in early spring may be helpful.
2) Until the cause of the diseases is better understood then further preventative measures are not possible.
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