Biochemical parameters in the blood of Holstein calves given immunoglobulin Y-supplemented colostrums.

Results The dosage, time and interaction for all variables were highly significant ( P < 0.001), as were the interactions between feeding method and dose, and feeding method and time for IgG (Table 1 ).The activity of AST in calves given 300 g of egg yolk was highest after 72 h irrespective of administration route (Figure 1 A and B).

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