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OJVRTM

 

Online Journal of Veterinary Research©

(Including Medical and Laboratory Research)

Established 1994

ISSN 1328-925X

 

Volume 28(4): 233-239, 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): 233-239, 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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