transition period

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Feeding rumen-protected methionine during the peripartum period improved milk fat content and reduced the culling rate of Holstein cows in a commercial herd
Udder health of dairy cows with an extended voluntary waiting period from calving until the first insemination.
Effects of replacing inorganic salts of trace minerals with organic trace minerals in pre- and postpartum diets on feeding behaviour, rumen fermentation, and performance of dairy cows.