Journal article

Lipid metabolic differences in cows producing small or large milk fat globules: Fatty acid origin and degree of saturation

L Walter, P Shrestha, R Fry, BJ Leury, A Logan

Journal of Dairy Science | ELSEVIER SCIENCE INC | Published : 2020

Abstract

This study compared cows that consistently produce milk with small (volume-weighted mean diameter of 2.92-3.83 µm, with an average diameter of 3.29 µm) or large (volume-weighted mean diameter of 4.58-5.67 µm, with an average diameter of 4.92 µm) milk fat globule (MFG) size distributions in terms of the fatty acid (FA) composition of the MFG core. Selected cows fell into the respective size group over at least 3 independent measurements, including an observation period before the experiment. Further selection criteria were similar milk production traits between cows (milk yield, fat yield, fat/protein ratio) and established lactation (>50 d in milk). However, the selected groups differed in p..

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