Chris Gwyn likes this technical article:
Dairy cows alter their metabolic, hormonal, mineral, and immunological systems as they transition from pregnancy to lactation. Following parturition cows are unable to consume enough nutrients to meet the energetic demands of lactation (and maintenance costs) and as a result enter into negative energy balance (NEB). During NEB, coordinated changes in carbohydrate and lipid metabolism (i.e., decrea ...
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April 29, 2009