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. 2020 Nov 12;7:520035. doi: 10.3389/fvets.2020.520035

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Copyright © 2020 Middelkoop, Choudhury, Gerrits, Kemp, Kleerebezem and Bolhuis.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Plasma haptoglobin concentrations of piglets that were provided with creep feed from 2 days of age (CF) or not (NF) before weaning and provided with a weaner diet after weaning. PRE = creep feed yes/no pre-weaning. Haptoglobin was determined at d29 after birth in 21 CF- and 20 NF-piglets. In 28 of these piglets additional samples were taken before weaning (n = 14 per treatment) and/or after weaning (n = 13 CF- and 12 NF-piglets). Data are back-transformed LS-means and their 95% CIs. Superscripts without a common letter differ over time at P < 0.05. P-values < 0.05 are presented in bold.