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OJVRTM
Online Journal of
Veterinary Research©
(Including Medical and Laboratory Research)
Established 1994
ISSN 1328-925X
Volume 28(4): 244-251,
2024.
Effect of oxidant stress
on bovine milk yields.
Löhrke B1, T Viergutz
T 1, Kanitz W1, Göllnitz K1, Becker F1, Hurtienne A2, Schweigert
FJ 2
1FBN Research Institute for the Biology of Farm Animals Dummerstorf, 2Institute of Nutritional Science,
University of Potsdam, Potsdam-Rehbrücke, Germany
ABSTRACT
Löhrke B, Viergutz
T, Kanitz W, Göllnitz K,
Becker F, Hurtienne A, Schweigert
FJ., Effect of oxidant stress on bovine milk yields,
Onl J Vet Res, 28(4): 244-251, 2024. Oxidant stress may occur during early lactation due to enhanced
oxidative metabolism for production of milk. We determined hydroperoxides
(HP) by oxidation of Fe2+ in lipid extracts from low density lipoproteins (LDL)
in serum from 8 Holstein cows in 1st and 5 cows in 2nd parity during lactation
stage of 53 ± 1.4 days postpartum yielding serum HP 0.1 - 2.1 µM. We found correlation
between serum HP and daily milk yield (r = 0.86, P = 0.0004) and milk energy
output (r = 0.64, P = 0.04). Findings suggest endogenous oxidation of LDL in
dairy cows increased with higher productivity.
KEYWORDS: Dairy cow, hydroperoxides,
low density lipoprotein.
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