Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-26T11:40:13.437Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of dietary unsaturated fatty acids in various forms on the de novo synthesis of fatty acids in the bovine mammary gland

Published online by Cambridge University Press:  01 June 2009

William Banks ,
John L. Clapperton  and
Anne K. Girdler
William Banks
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, UK
John L. Clapperton
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, UK
Anne K. Girdler
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, UK
Get access Rights & Permissions [Opens in a new window]

Summary

Free and protected soya oil and soya oil fatty acids were included in the rations of dairy cows and from outputs in the milk of 18:1 trans and of polyunsaturated acids conditions in the rumen have been deduced. Similarly, the content of citrate in the milk has been used to evaluate changes occurring in the synthesis of fatty acids in the mammary gland.

Type
Original Articles
Information
Journal of Dairy Research , Volume 57 , Issue 2 , May 1990 , pp. 179 - 185
Copyright
Copyright © Proprietors of Journal of Dairy Research 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Banks, W., Clapperton, J. L. & Ferrie, M. E. 1976 Effect of feeding fat to dairy cows receiving a fat-deficient basal diet. II. Fatty acid composition of the milk fat. Journal of Dairy Research 43 219–227CrossRefGoogle ScholarPubMed
Banks, W., Clapperton, J. L., Girdler, A. K. & Steele, W. 1984 Effect of inclusion of different forms of dietary fatty acid on the yield and composition of cow's milk. Journal of Dairy Research 51 387–395CrossRefGoogle ScholarPubMed
Banks, W., Clapperton, J. L., Kelly, M. E., Wilson, A. G. & Crawford, R. J. M. 1980 The yield, fatty acid composition and physical properties of milk fat obtained by feeding soya oil to dairy cows. Journal of the Science of Food and Agriculture 31, 368–374Google Scholar
Banks, W., Clapperton, J. L., Muir, D. D. & Girdler, A. K. 1989 Whipping properties of cream in relation to milk composition. Journal of Dairy Research 56 97–105Google Scholar
Banks, W., Clapperton, J. L. & Steele, W. 1983 Dietary manipulation of the content and fatty acid composition of milk fat. Proceedings of the Nutrition Society 42 399–406Google Scholar
Clapperton, J. L. & Banks, W. 1985 Factors affecting the yield of milk and its constituents, particularly fatty acids, when dairy cows consume diets containing added fat. Journal of the Science of Food and Agriculture 36 1205–1211Google Scholar
Cook, L. J., Scott, T. W., Ferguson, K. A. & McDonald, I. W. 1970 Production of polyunsaturated ruminant body fats. Nature 228 178–179Google Scholar
Faulkner, A. & Clapperton, J. L. 1981 Changes in the concentration of some minor constituents of milk from cows fed low- or high-fat diets. Comparative Biochemistry and Physiology 68A 281–283CrossRefGoogle Scholar
Faulkner, A. & Pollock, H. T. 1989 Changes in the concentration of metabolites in milk from cows fed on diets supplemented with soyabean oil or fatty acids. Journal of Dairy Research 56 179–183Google Scholar
Fogerty, A. C. & Johnson, A. R. 1980 Influence of nutritional factors on the yield and content of milk fat: protected polyunsaturated fat in the diet. In Factors affecting the yields and contents of milk constituents of commercial importance, pp. 96–104Brussels: International Dairy Federation (IDF B-DOC 125)Google Scholar
Harfoot, C. G. 1978 Lipid metabolism in the rumen. Progress in Lipid Research 17 21–54CrossRefGoogle ScholarPubMed
Jilg, T., Aiple, K. P. & Steingass, H. 1988 [Fat exchange and dietary fats in ruminants.] Ubersichten zur Tierernährungen 16 109–152.Google Scholar
Moore, J. H. & Steele, W. 1968 Dietary fat and milk fat secretion in the cow. Proceedings of the Nutrition Society 27 66–70Google Scholar
Ormrod, I. H. L., Thomas, P. C. & Wheelock, J. V. 1979 The effect of diet on the citric acid and soluble calcium content of cow's milk. Proceedings of the Nutrition Society 38, 121AGoogle ScholarPubMed
Snedecor, G. W. & Cochran, W. G. 1980 Statistical Methods, 7th edn. Ames, Iowa: Iowa State University PressGoogle Scholar
Steele, W. & Moore, J. H. 1968 The effects of mono-unsaturated and saturated fatty acids in the diet on milk-fat secretion. Journal of Dairy Research 35 353–360Google Scholar
Storry, J. E. 1972 Milk fat: its synthesis and composition in relation to the nutrition of the dairy cow. Journal of the Society of Dairy Technology 25 40–46Google Scholar