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Effects of supplementing multiparous Holstein cows during the periparturient period (−21 through 30 days around parturition) with rumen-protected methionine (MET; Smartamine M, Adisseo NA) on circulating concentrations of cystathionine, cystine, homocysteine, taurine, and total sulfur-containing compounds (TSC). Values are means, with standard errors represented by vertical bars.
