Manipulation of the Fatty Acid Composition of Milk by Feeding Protected Canola Seeds

The feeding to dairy cows of canola seed protected from ruminal metabolism by emulsification and encapsulation in a matrix of aldehyde-treated protein resulted in a 10% increase in milk fat and no change in milk yield or protein content. Feeding the protected canola supplement significantly reduced...

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Bibliographic Details
Published in:Journal of dairy science 1992-04, Vol.75 (4), p.1090-1096
Main Authors: Ashes, J.R., Vincent Welch, P.St, Gulati, S.K., Scott, T.W., Brown, G.H., Blakeley, S.
Format: Article
Language:English
Subjects:
ACIDE GRAS
ACIDOS GRASOS
Animal Feed
Animals
Biological and medical sciences
Brassica
Cattle - physiology
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
CORPS GRAS
fatty acids
Fatty Acids - analysis
Female
Food industries
Fundamental and applied biological sciences. Psychology
GRAINE DE COLZA
GRASA DE LA LECHE
GRASAS
Lactation - physiology
LAIT
LECHE
MATIERE GRASSE DU LAIT
Milk - analysis
Milk and cheese industries. Ice creams
milk fat
protected canola
PROTEINAS DE LA LECHE
PROTEINE DU LAIT
RENDEMENT
RENDIMIENTO
Seeds
SEMILLA DE COLZA
VACAS LECHERAS
VACHE LAITIERE
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Summary:The feeding to dairy cows of canola seed protected from ruminal metabolism by emulsification and encapsulation in a matrix of aldehyde-treated protein resulted in a 10% increase in milk fat and no change in milk yield or protein content. Feeding the protected canola supplement significantly reduced the proportions of saturated fatty acids C16:0, C14:0, and C12:0 in milk fat; there were corresponding increases in proportions of C18:0, C18:1, C18:2 and C18:3. Yield of C18 monounsaturated and polyunsaturated fatty acids increased by 54%, which is equivalent to 143g/d. Canola seed, enriched in C18:1, can be included in the diet and can result in significant changes in the proportions of saturated and unsaturated fatty acids in milk fat.
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(92)77853-9