Effects of dietary medium-chain triglycerides on plasma lipids and lipoprotein distribution and food aversion in cats.
OBJECTIVE
To determine possible diet aversion and lipid and lipoprotein alterations in cats fed diets containing medium-chain triglycerides (MCTs).


METHODS
19 clinically normal adult female cats.


METHODS
Cats were assigned to 2 groups (low MCT diet [n = 10] and high MCT diet [9]) and fed the diets for 9 weeks according to metabolic body weight (100 kcal of metabolizable energy [ME] x kg(-0.67)/d). Daily consumption records and weekly body weight and body condition score (BCS) were used to adjust amounts fed and calculate daily ME factors for each cat to maintain ideal BCS. Blood samples were obtained after withholding food on days 0, 14, 28, and 56 for measurement of plasma triglyceride and total cholesterol concentrations and lipoprotein-cholesterol distributions. Repeated-measures ANOVA and Tukey multiple comparison tests were performed.


RESULTS
No diet differences were found for food consumption, body weight, BCS, and ME factors. A significant increase in plasma triglyceride concentration was detected for the high MCT diet; however, values were within the reference ranges. No diet effects were observed for total cholesterol concentrations or lipoprotein-cholesterol distributions, although increases over time were observed.


CONCLUSIONS
Inclusion of MCT in diets of cats did not result in feed refusal and had minimal effects on lipid metabolism. Such diets may be useful for both clinically normal cats and cats with metabolic disorders. The MCT oils are an example of a bioactive dietary lipid that may benefit feline metabolism and can serve as a useful functional food ingredient for cats.
Trevizan
Luciano
L
Department of Animal Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91540-000, Brazil.
de Mello Kessler
Alexandre
A
Bigley
Karen E
KE
Anderson
Wendy H
WH
Waldron
Mark K
MK
Bauer
John E
JE
D000821:Animal Feed / Q000032:analysis*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001823:Body Composition; D001835:Body Weight; D002415:Cats; D004032:Diet / Q000662:veterinary; D004734:Energy Metabolism; D005247:Feeding Behavior / Q000502:physiology*; D005260:Female; D008055:Lipids / Q000097:blood*; D008074:Lipoproteins / Q000097:blood*; D014280:Triglycerides / Q000494:pharmacology*
D008055:Lipids; D008074:Lipoproteins; D014280:Triglycerides