After weaning, plasma concentration of B12 decreased with age (P < 0.05), from 304 ± 10.5 pg/mL before the second injection of cyanocobalamin to 269.42 ± 14.2 pg/mL on d 56, at the end of the study, but no treatment effect (P > 0.10) was detected.
After weaning, plasma concentration of B12 decreased with age (P < 0.05), from 304 ± 10.5 pg/mL before the second injection of cyanocobalamin to 269.42 ± 14.2 pg/mL on d 56, at the end of the study, but no treatment effect (P > 0.10) was detected.