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Technical note: forms and route of vitamin C supplementation for cows
1Centre for Food and Animal Research, Agriculture and Agri-Food Canada, Ottawa, ON, Canada.
Journal of Dairy Science
|September 10, 1999
Summary
Oral vitamin C supplementation in dairy cows showed that ethyl cellulose-coated vitamin C increased plasma ascorbic acid levels more effectively than fine powder vitamin C. Abomasal administration also tended to yield higher concentrations.
Area of Science:
- Veterinary Medicine
- Animal Nutrition
- Biochemistry
Background:
- Vitamin C (ascorbic acid) is a crucial antioxidant and essential nutrient for dairy cows.
- Understanding optimal supplementation methods is vital for maintaining animal health and productivity.
- Different forms of vitamin C may have varying bioavailability in ruminants.
Purpose of the Study:
- To compare the efficacy of oral vitamin C supplementation using two different forms (fine powder vs. ethyl cellulose-coated) on plasma ascorbic acid concentrations in dairy cows.
- To assess the impact of abomasal administration of vitamin C on plasma ascorbic acid levels.
Main Methods:
- Dairy cows were supplemented with 40 g/d of vitamin C for 5 days.
- Three groups were studied: oral fine powder vitamin C, oral ethyl cellulose-coated vitamin C, and abomasal fine powder vitamin C via fistula.
- Plasma ascorbic acid concentrations were measured over the 5-day supplementation period.
Main Results:
- Oral ethyl cellulose-coated vitamin C resulted in higher plasma ascorbic acid concentrations compared to oral fine powder vitamin C.
- The maximum concentration for coated vitamin C was 5 micrograms/ml at 30 hours.
- Abomasal administration of vitamin C tended to result in higher ascorbic acid levels than oral supplementation, with a peak of 4.4 micrograms/ml at 54 hours.
Conclusions:
- Ethyl cellulose coating enhances the bioavailability of oral vitamin C in dairy cows.
- Abomasal administration may offer an alternative route for vitamin C supplementation, potentially leading to higher plasma levels.
- Further research into coated vitamin C forms and abomasal delivery is warranted for optimizing dairy cow nutrition.
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