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Effect of oxidative status on the occurrence of haemolactia in dairy cows after calving Cover

Effect of oxidative status on the occurrence of haemolactia in dairy cows after calving

Open Access
|May 2022

Abstract

Introduction

Dairy cows may infrequently give milk tinged with blood after calving, which is a condition termed haemolactia. Economic losses for dairy farmers are caused by cases of haemolactia because of the condemnation of such milk, potential contamination of good bulk tank milk with haemolactic milk, and need for veterinarian intervention. This study was performed to elucidate the oxidative status of dairy cows with haemolactia during the peripartum period.

Material and Methods

Plasma glutathione peroxidase, malondialdehyde (MDA) and superoxide dismutase concentrations along with serum vitamin A, C and E concentrations were determined as indices of oxidative stress. The sampled dairy cows comprised two haemolactic (n = 11 and n = 6) and two non-haemolactic (n = 11 and n = 6) groups.

Results

On the first day when haemolactia was identified in colostrum (at mean 2.1 days after parturition), a significantly increased concentration of plasma MDA was noted in the haemolactic group. During the prepartum period, low levels of serum vitamin E were continuously observed from prepartum week 4 to the parturition day but only in the haemolactic group.

Conclusion

These results demonstrate that continuous low levels of serum vitamin E in the prepartum period may play a pivotal role as a requisite factor in the onset of haemolactia after calving.

Language: English
Page range: 251 - 255
Submitted on: Jan 4, 2022
Accepted on: May 12, 2022
Published on: May 31, 2022
Published by: National Veterinary Research Institute in Pulawy
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2022 Tomoko Kuroiwa, Keiichi Matsuda, Tomomi Kanazawa, Hueyshy Chee, Atsushi Kimura, Hiroshi Satoh, Shigeru Sato, Toshihiro Ichijo, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.