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Effect of rumen-protected lysine and methionine supplementation to close-up cows on overall immunoglobulin G (IgG) concentrations of their heifer calves. Calves were assigned to treatments based on the pre-calving treatment of their dam, fed unsupplemented AA diet (CON), or receiving supplemental with ruminally-protected lysine (RPL) or methionine (RPM) or the two in combination (RPML). Values are means. Standard errors are represented by vertical bars.
