Selenium in Beef Cows' Milk and Blood: Organic vs Inorganic
Author Information
Author(s): Slavik Petr, Illek Josef, Brix Michal, Hlavicova Jaroslava, Rajmon Radko, Jilek Frantisek
Primary Institution: Czech University of Life Sciences Prague
Hypothesis
Does dietary selenium supplementation affect selenium concentrations in the blood, colostrum, and milk of beef cows?
Conclusion
Selenium-enriched yeast is more effective than sodium selenite in increasing selenium levels in blood, colostrum, and milk.
Supporting Evidence
- Selenium concentrations in blood and colostrum were significantly higher in the selenium-enriched yeast group compared to the control group.
- The decrease in colostrum selenium concentration was less pronounced in the selenium-enriched yeast group.
- Selenium levels in milk were significantly higher in the selenium-enriched yeast group at both 6 and 12 weeks of supplementation.
Takeaway
Feeding cows a special type of selenium helps them pass more of it into their milk, which is important for baby calves.
Methodology
Cows were divided into three groups and supplemented with either organic selenium, inorganic selenium, or no selenium, with blood and milk samples taken at various points.
Potential Biases
Potential bias in sample selection and environmental factors affecting selenium levels.
Limitations
The study was limited to a single herd and may not be generalizable to other breeds or environments.
Participant Demographics
120 late pregnant Charolais cows from a single herd in the Czech Republic.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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