Volume 44 Supplement 1

11th International Conference on Production Diseases in Farm Animals

Open Access

Antioxidant Status of Calves and Foals Declines After Birth

Acta Veterinaria Scandinavica200344(Suppl 1):P38

DOI: 10.1186/1751-0147-44-S1-P38

Published: 31 March 2003

Antioxidant status is known to be a significant predictor of disease and mortality in infants, especially premature infants. It is unknown whether health of newborn animals is influenced by impairment of their antioxidant status. In order to characterize antioxidant status of calves and foals, trolox equivalent antioxidant capacity (TEAC) was measured in blood of cows and calves, as well as mares and foals, starting immediately after birth and continued over several weeks. Measurements of selected antioxidants should provide insight in their specific function and additional biochemical parameters should explain the causes for impairment of antioxidant status.

TEAC levels were practically equal in blood sera of mares (0.38 ± 0.15 mmol/l, n = 67) and newborn foals (0.38 ± 0.06 mmol/l, n = 35). However, antioxidant status was significantly impaired during the first week of life (0.24 ± 0.03 mmol/l, n = 18 at 7th day) and remained at low levels during the investigated period. The same pattern was found in cows (0.27 ± 0.07 mmol/l, n = 19), newborn calves (0.28 ± 0.08 mmol/l, n = 19) and calves after one week (0.20 ± 0.05 mmol/l, n = 19 at 5th day).

The postnatal TEAC decrease could be caused by ischemia/reperfusion injury during birth, reflected by a postnatal lactate rise to 4.81 ± 2.14 mmol/l in foals or to 9.75 ± 6.00 mmol/l in calves, respectively. Antioxidant consumption could also be due to (during degradation of fetal hemoglobin liberated) prooxidant Fe2+, raised to 64.83 ± 12.61 μmol/l in foals, 1st day, or 34.40 ± 17.77 μmol/l in calves, 8th day. Improvement of the antioxidant status, e.g. by supplementing with vitamin E, could be beneficial in preventing oxygen radical induced diseases (e.g. white muscle disease).
Figure 1

*** p < 0,001, ** p < 0,01 significantly different to postnatal TEAC.

Authors’ Affiliations

(1)
Institute of physiology, physiological chemistry and animal nutrition, LMU Munich

References

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Copyright

© The Author(s); licensee BioMed Central Ltd. 2003

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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