Control measures include feeding molasses-treated chopped straw<ref>Feeding molasses is generally frowned upon during the dry period due to the high potassium content which can increase the rate of milk fever in the herd.</ref> as part of the ration during the dry period to maintain rumen size and microbial function. Dry matter intakes should be as high as possible during the dry period, and on the day of calving in particular. There must be 24 hr of easy access to the diet – one should not rely on feeding refusals from the milking herd ration to the dry cows. Any dietary changes must be introduced gradually. Most high-yielding cows are fed a total mixed ration which has the benefit of creating a more stable rumen environ - ment than that achieved with separate concentrate feeding. Cows should enter the dry period in BCS 3 (scale 1–5) and maintain that value until calving.
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Control measures include feeding molasses-treated chopped straw<sup>1</sup> as part of the ration during the dry period to maintain rumen size and microbial function. Dry matter intakes should be as high as possible during the dry period, and on the day of calving in particular. There must be 24 hr of easy access to the diet – one should not rely on feeding refusals from the milking herd ration to the dry cows. Any dietary changes must be introduced gradually. Most high-yielding cows are fed a total mixed ration which has the benefit of creating a more stable rumen environ - ment than that achieved with separate concentrate feeding. Cows should enter the dry period in BCS 3 (scale 1–5) and maintain that value until calving.
| align="left" | <p>Comments by Nick Lyons MA VetMB CertCHP MRCVS</p>
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<p>1. Feeding molasses is generally frowned upon during the dry period due to the high potassium content which can increase the rate of milk fever in the herd.</p>