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Relationship between fish oil intake by dairy cows and the yield of eicosapentaenoic acid and docosahexaenoic acid in their milk

Published online by Cambridge University Press:  20 November 2017

C. Rymer ,
C. Dyer ,
D.I. Givens  and
R. Allison
C. Rymer
Affiliation:
ADAS Nutritional Sciences Research Unit, Alcester Road, Stratford upon Avon, CV37 9RQ UK
C. Dyer
Affiliation:
ADAS Nutritional Sciences Research Unit, Alcester Road, Stratford upon Avon, CV37 9RQ UK
D.I. Givens
Affiliation:
ADAS Nutritional Sciences Research Unit, Alcester Road, Stratford upon Avon, CV37 9RQ UK
R. Allison
Affiliation:
ADAS Bridgets Research Unit, Martyr Worthy, Winchester, SO21 1AP UK
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Extract

The dietary essential fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are predominantly found in fish oil, but fish consumption in the UK is low. Increasing the yield of EPA and DHA in cows’ milk would increase human intakes of EPA and DHA, and this can be achieved by including fish oil in cows’ diets. However, because EPA and DHA are susceptible to rumen biohydrogenation, their transfer efficiency into milk is low. In vitro observations by Gulati et al. (1999) suggested that if the concentration of fish oil in the rumen exceeded 1 mg/ml, EPA and DHA were not hydrogenated. The objectives of this study were therefore to determine the relationships between fish oil intake by dairy cows, and the probable concentrations of fish oil in the cows’ rumen, with the yield of EPA and DHA in their milk.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2001 , 2001 , pp. 199
Copyright
Copyright © The British Society of Animal Science 2001

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