title: Manipulation of the fatty acid composition of milk by feeding protected canola seeds.
abstract: 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 143 g/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.
authors.affiliation: Division of Animal Production, Commonwealth Scientific and Industrial Research Organisation, Blacktown, New South Wales, Australia.
authors.forename: J R
authors.initials: JR
authors.lastname: Ashes
authors.forename: P S
authors.initials: PS
authors.lastname: Welch
authors.forename: S K
authors.initials: SK
authors.lastname: Gulati
authors.forename: T W
authors.initials: TW
authors.lastname: Scott
authors.forename: G H
authors.initials: GH
authors.lastname: Brown
authors.forename: S
authors.initials: S
authors.lastname: Blakeley
mesh_terms: D000821:Animal Feed; D000818:Animals; D001937:Brassica; D002417:Cattle / Q000502:physiology*; D005227:Fatty Acids / Q000032:analysis*; D005260:Female; D007774:Lactation / Q000502:physiology*; D008892:Milk / Q000032:analysis*; D012639:Seeds
chemical_list: D005227:Fatty Acids