Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Plasma and Colostrum Selenium Statuses of Properly Supplemented Belgian Blue Cows on Commercial Farms and their Relationship with Source of Dietary Selenium and Blood Biomarkers.

Pauline Delhez
* ORCID logo ,
Emilie Knapp
,
Barbara Pirard
,
Marceau Gauthier
,
Anne-Sophie Rao
,
Louis Rao
,
Christian Hanzen
,
Leonard Theron
* ORCID logo
Version 1 : Received: 10 October 2022 / Approved: 11 October 2022 / Online: 11 October 2022 (07:23:19 CEST)

A peer-reviewed article of this Preprint also exists.

Delhez, P.; Knapp, É.; Pirard, B.; Gauthier, M.; Rao, A.-S.; Hanzen, C.; Theron, L. Plasma and Colostrum Selenium Statuses of Properly Supplemented Belgian Blue Cows on Commercial Farms and Their Relationship with Sources of Dietary Selenium and Blood Biomarkers. Dairy 2022, 3, 862-871. Delhez, P.; Knapp, É.; Pirard, B.; Gauthier, M.; Rao, A.-S.; Hanzen, C.; Theron, L. Plasma and Colostrum Selenium Statuses of Properly Supplemented Belgian Blue Cows on Commercial Farms and Their Relationship with Sources of Dietary Selenium and Blood Biomarkers. Dairy 2022, 3, 862-871.

Abstract

Selenium (Se) is an essential trace element for the health and immunity of cattle. Double-muscled Belgian Blue cows are well known to be prone to nutritional deficiencies. Colostrum Se level is also a key factor to promote immunoglobulin intake in young calves. The main objectives of this study were to assess (1) the plasma and colostrum Se statuses of properly-supplemented Belgian-Blue cows on commercial farms and (2) the relationship between Se concentrations in plasma and colostrum. Secondary objectives were to assess relationships between plasma or colostrum Se concentrations and dietary Se supplementation as well as blood biomarkers. Blood and colostrum samples were collected from 49 Belgian Blue cows on 5 commercial farms in Belgium. They received 5 different rations with Se supplementation ranging from 0.5 to 2 ppm including 20% to 83% of organic form. Results showed that average Se concentration was 90 +- 15 µg/L in plasma and 79 +- 26 µg/L in colostrum, consistent with previous studies on well-supplemented cows. No relationship was observed between Se concentrations in plasma and colostrum, suggesting that colostrum Se testing would be a complementary indicator for improving calf Se supplementation. Relationships between plasma or colostrum Se and dietary Se or blood biomarkers emphasized the complexity of Se metabolism in observational studies under field conditions.

Keywords

cattle; Belgian Blue; beef; colostrum; selenium

Subject

Biology and Life Sciences, Animal Science, Veterinary Science and Zoology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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