ORIGINAL PAPER
Dietary fat type and level affect thyroid hormone plasma concentrations in rats
 
More details
Hide details
1
Warsaw University of Life Sciences (SGGW), Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences, Nowoursynowska 159c, 02-776 Warsaw, Poland
2
Nencki Institute of Experimental Biology, Department of Cellular Biochemistry, Pasteura 3, 02-093 Warsaw, Poland
CORRESPONDING AUTHOR
D. Rosołowska-Huszcz   

Warsaw University of Life Sciences (SGGW), Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences, Nowoursynowska 159c, 02-776 Warsaw, Poland
Publication date: 2009-06-24
 
J. Anim. Feed Sci. 2009;18(3):541–550
 
KEYWORDS
ABSTRACT
The objective of the study was to examine the effect of dietary fat source and level on plasma thyroid hormone concentrations. For three weeks, male Wistar rats (n=54) were fed diets containing fats differing in fatty acid (FA) composition: sunflower oil predominantly containing polyunsaturated n-6 FA, group S; rich in monounsaturated FA rape seed oil, group R; and saturated FA palm oil, group P; at three levels (w/w): 5% LF, 10% MF, and 20% HF. Total thyroxine levels were higher in group P than R on the LF and MF diets. The free thyroxine concentration in rats on the LF diet was higher in group R than in S and P; on the MF diet, higher in group R and P than S; and on the HF diet, higher in group P than S. Triiodothyronine levels were influenced by fat composition only in rats fed the HF diet, being lower in group S than P. The results of this study suggest that diets differing with respect to fat type and level might have opposite effects on thyroid hormone values.
 
CITATIONS (2):
1.
Dietary vegetable oils inclusion on the performance, hormonal levels and hsp 70 gene expression in broilers under heat stress
Ali Tari, Ali Sadeghi, Seyed Mousavi
Acta Scientiarum. Animal Sciences
 
2.
The Effects of Different Oil Sources on Performance, Digestive Enzymes, Carcass Traits, Biochemical, Immunological, Antioxidant, and Morphometric Responses of Broiler Chicks
Youssef Attia, Mohammed Al-Harthi, El-Maaty Abo
Frontiers in Veterinary Science
 
ISSN:1230-1388