Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-17T14:54:53.987Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect on cow performance and milk fat composition of including full fat soyabeans and rapeseeds in the concentrate mixture for lactating dairy cows

Published online by Cambridge University Press:  01 June 2009

John J. Murphy ,
Gerald P. McNeill ,
James F. Connolly  and
Patrick A. Gleeson
John J. Murphy
Affiliation:
Teagasc (Agriculture and Food Development Authority), Moorepark Research Centre, Fermoy, Co. Cork, Ireland
Gerald P. McNeill
Affiliation:
Teagasc (Agriculture and Food Development Authority), Moorepark Research Centre, Fermoy, Co. Cork, Ireland
James F. Connolly
Affiliation:
Teagasc (Agriculture and Food Development Authority), Moorepark Research Centre, Fermoy, Co. Cork, Ireland
Patrick A. Gleeson
Affiliation:
Teagasc (Agriculture and Food Development Authority), Moorepark Research Centre, Fermoy, Co. Cork, Ireland
Get access Rights & Permissions [Opens in a new window]

Summary

Two experiments were carried out to determine the effect on milk yield, milk composition and composition and physical properties of milk fat of giving full fat soyabeans (FFS) and full fat rapeseeds (FFR) to dairy cows. In both experiments grass silage was provided ad lib. and constituted over 50% of the dry matter (DM) intake of the cows. In experiment 1, cows received 7·25 kg/d of a concentrate mixture containing 240 g/kg of extruded FFS or 7·25 kg/d of a mixture without soyabeans. Cow performance was not significantly affected by the inclusion of FFS but fatty acid composition of the milk fat was greatly altered. The contents of C8:0 to C16:0 were significantly reduced (P < 0·001) while the contents of C18:0, C18:l and C18:2 were significantly increased (P < 0·001). Milk fat produced during feeding on FFS concentrate had a significantly lower content of solid fat at temperatures between 0 and 25 °C compared with milk fat produced when FFS was not given. In experiment 2, cows received concentrate mixtures containing either no whole rapeseed, 150 g/kg of whole unground FFR or 150 g/kg of ground FFR. Milk yield was significantly higher and silage DM intake significantly lower with the ground FFR concentrate compared with the other two diets but milk composition was not significantly different among treatments. FFR inclusion, either ground or unground, reduced diet digestibility. Changes in fatty acid composition of the milk fat were similar to those observed with FFS inclusion but the effect was larger with ground FFR compared with unground FFR. Nuclear magnetic resonance analysis showed a lower solid fat content when the FFR diets were employed with the effect being greatest with ground FFR.

Type
Original Articles
Information
Journal of Dairy Research , Volume 57 , Issue 3 , August 1990 , pp. 295 - 306
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. 1987 Opportunities for varying the composition of cows' milk. Journal of the Society of Dairy Technology 40 96–99CrossRefGoogle Scholar
Bhattacharya, A. N. & Sleiman, F. T. 1971 Beet pulp as a grain replacement for dairy cows and sheep. Journal of Dairy Science 54 89–94CrossRefGoogle Scholar
Bines, J. A., Brumby, P. E., Storry, J. E., Fulford, R. J. & Braithwaite, G. D. 1978 The effect of protected lipids on nutrient intakes, blood and rumen metabolites and milk secretion in dairy cows during early lactation. Journal of Agricultural Science 91 135–150CrossRefGoogle Scholar
Cullinane, N., Condon, D., Eason, D., Phelan, J. A. & Connolly, J. F. 1984 Influence of season and processing parameters on the physical properties of Irish butter. Irish Journal of Food Science and Technology 8 13–25Google Scholar
DePeters, E. J., Taylor, S. J., Franke, A. A. & Aguirre, A. 1985 Effects of feeding whole cottonseed on composition of milk. Journal of Dairy Science 68 897–902CrossRefGoogle Scholar
Goering, H. K., Wrenn, T. R., Edmondson, L. F., Weyant, J. R., Wood, D. L. & Bitman, J. 1977 Feeding polyunsaturated vegetable oils to lactating cows. Journal of Dairy Science 60 739–747CrossRefGoogle ScholarPubMed
Handy, K. W. & Kennelly, J. J. 1983 Influence of feeding whole canola seed, ground canola seed and a protected lipid supplement on milk yield and composition. Agriculture and Forestry Bulletin of the University of Alberta Special Issue 83–86Google Scholar
Henderson, C. 1973 The effects of fatty acids on pure cultures of rumen bacteria. Journal of Agricultural Science 81 107–112CrossRefGoogle Scholar
Kinsella, J. E. 1972 Stearyl-CoA as a precursor of oleic acid and glycerolipids in mammary microsomes from lactating bovine:possible regulatory step in milk triglyceride synthesis. Lipids 7 349–355CrossRefGoogle ScholarPubMed
Kowalczyk, J., Ørskov, E. R., Robinson, J. J. & Stewart, C. S. 1977 Effect of fat supplementation on voluntary food intake and rumen metabolism in sheep. British Journal of Nutrition 37 251–257CrossRefGoogle ScholarPubMed
Loosli, J. K., Warner, R. G. & Hintz, H. F. 1961 Value of corn distillers dried grains, soybean oil meal, heated soybeans and soybean oil meal plus starch for milk production. Journal of Dairy Science 44 1910–1914CrossRefGoogle Scholar
McGuffey, R. K. & Schingoethe, D. J. 1982 Whole sunflower seeds for high producing dairy cows. Journal of Dairy Science 65 1479–1483CrossRefGoogle Scholar
Mielke, C. D. & Schingoethe, D. J. 1981 Heat-treated soybeans for lactating cows. Journal of Dairy Science 64 1579–1585CrossRefGoogle Scholar
Moore, J. A., Swingle, R. S. & Hale, W. H. 1986 Effects of whole cottonseed, cottonseed oil or animal fat on digestibility of wheat straw diets by steers. Journal of Animal Science 63 1267–1273CrossRefGoogle ScholarPubMed
Murphy, J. J. & Gleeson, P. A. 1979 a Effect of added tallow as an energy source in dairy rations on cow performance. Irish Journal of Agricultural Research 18 245–251Google Scholar
Murphy, J. J. & Gleeson, P. A. 1979 b Effect on milk production of including high energy ingredients in rations based on molassed beet pulp. An Foras Talúntais. Animal Production Research Report 57Google Scholar
Murphy, J. J. & Morgan, D. J. 1983 Effect of inclusion of protected and unprotected tallow in the supplement on the performance of lactating dairy cows. Animal Production 37 203–210Google Scholar
Perry, F. G. & MacLeod, G. K. 1968 Effects of feeding raw soybeans on rumen metabolism and milk composition of dairy cows. Journal of Dairy Science 51 1233–1238CrossRefGoogle Scholar
Plowman, R. D., Bitman, J., Gordon, C. H., Dryden, L. P., Goering, H. K., Wrenn, T. R., Edmondson, L. F., Yoncoskie, R. A. & Douglas, F. W. 1972 Milk fat with increased polyunsaturated fatty acids. Journal of Dairy Science 55 204–207CrossRefGoogle ScholarPubMed
Rafalowski, W. & Park, C. S. 1982 Whole sunflower seed as a fat supplement for lactating cows. Journal of Dairy Science 65 1484–1492CrossRefGoogle Scholar
Schwab, C. G., Muise, S. J. & Holter, J. B. 1980 The effect of extruded heat-processed soybeans and methionine on performance, nitrogen and energy metabolism and blood parameters in early lactation cows. Journal of Dairy Science 63 (Supplement 1) 140Google Scholar
Scott, T. W., Cook, L. J. & Mills, S. C. 1971 Protection of dietary polyunsaturated fatty acids against microbial hydrogenation in ruminants. Journal of the American Oil Chemists' Society 48 358–364CrossRefGoogle Scholar
Storry, J. E., Brumby, P. E., Hall, A. J. & Tuckley, B. 1974 Effects of free and protected forms of codliver oil on milk fat secretion in the dairy cow. Journal of Dairy Science 57 1046–1049CrossRefGoogle ScholarPubMed
Ward, P. F. V., Scott, T. W. & Dawson, R. M. C. 1964 The hydrogenation of unsaturated fatty acids in the ovine digestive tract. Biochemical Journal 92 60–68CrossRefGoogle ScholarPubMed
Wrenn, T. R., Weyant, J. R., Wood, D. L., Bitman, J., Rawlings, R. M. & Lyon, K. E. 1976 Increasing polyunsaturation of milk fats by feeding formaldehyde protected sunflower-soybean supplement. Journal of Dairy Science 59 627–635CrossRefGoogle ScholarPubMed