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. 2016 Dec 19;3:115. doi: 10.3389/fvets.2016.00115

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Copyright © 2016 Græsbøll, Kirkeby, Nielsen, Halasa, Toft and Christiansen.

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) or licensor 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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Histogram of α and β describing the two-parameter lactation curve. Using equations (3) and (5), lactation curves with only two parameters per cow were fitted for all cows for lactations 1, 2, and ≥3. Abbreviation: lac., lactation.