Yield of milk averaged for the first 24 weeks of lactation was similar among diets but evolution over time was different.
Yields of fat, protein, and total solids decreased with higher levels of WF in the diet. Feeding increased proportions of WF in
the diet increased proportions of total trans, monounsaturated, polyunsaturated and omega-3 FA in milk fat. Levels of WF
in the diet had no effect on TTAD of nutrients, plasma concentrations of -hydroxybutyrate, glucose, and non-esterified FA,
and energy balance. Although milk FA profile was enhanced, feeding more than 46 g/kg DM WF had negative effects on yield
of milk components. Therefore, evaluation must be carried out to decide which factor between FA profile or yield of milk
components is the most profitable from an economic point of view
Yield of milk averaged for the first 24 weeks of lactation was similar among diets but evolution over time was different.Yields of fat, protein, and total solids decreased with higher levels of WF in the diet. Feeding increased proportions of WF inthe diet increased proportions of total trans, monounsaturated, polyunsaturated and omega-3 FA in milk fat. Levels of WFin the diet had no effect on TTAD of nutrients, plasma concentrations of -hydroxybutyrate, glucose, and non-esterified FA,and energy balance. Although milk FA profile was enhanced, feeding more than 46 g/kg DM WF had negative effects on yieldof milk components. Therefore, evaluation must be carried out to decide which factor between FA profile or yield of milkcomponents is the most profitable from an economic point of view
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