Short communication: elevated concentrations of oleic acid and long-chain fatty acids in milk fat of multiparous subclinical ketotic cows.
The objective of this study was to determine whether concentrations of specific fatty acids in milk fat are a candidate for the early detection of subclinical ketosis. The case study included multiparous cows fed a lipogenic diet or a mixed glucogenic:lipogenic diet during the first 9 wk of lactation. Milk fatty acid profiles of cows classified as healthy (n = 8) or as subclinically ketotic (n = 8) based on a blood plasma beta-hydroxybutyrate threshold concentration of 1.2 mmol/L were compared. Subclinically ketotic cows showed an elevated proportion of C18:1 cis-9 in milk fat during the whole registration period.
Van Haelst
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YN
Laboratory for Animal Nutrition and Animal Product Quality, Faculty of Bioscience Engineering, Ghent University, Proefhoevestraat 10, 9090 Melle, Belgium.
Beeckman
A
A
Van Knegsel
A T M
AT
Fievez
V
V
D020155:3-Hydroxybutyric Acid / Q000097:blood; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis / Q000503:physiopathology*; D005223:Fats / Q000737:chemistry*; D005227:Fatty Acids / Q000032:analysis*; D005230:Fatty Acids, Nonesterified / Q000097:blood; D005260:Female; D007662:Ketosis / Q000175:diagnosis / Q000662:veterinary*; D007774:Lactation; D008892:Milk / Q000737:chemistry* / Q000378:metabolism; D019301:Oleic Acid / Q000032:analysis*; D010298:Parity; D011237:Predictive Value of Tests; D011247:Pregnancy
D005223:Fats; D005227:Fatty Acids; D005230:Fatty Acids, Nonesterified; D019301:Oleic Acid; D020155:3-Hydroxybutyric Acid