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 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.
Ashes
J R
JR
Division of Animal Production, Commonwealth Scientific and Industrial Research Organisation, Blacktown, New South Wales, Australia.
Welch
P S
PS
Gulati
S K
SK
Scott
T W
TW
Brown
G H
GH
Blakeley
S
S
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
D005227:Fatty Acids