[Thermogenesis in overfeeding with administration of olive oil and fish oil in a swine model study].
A trial on total metabolism was conducted in eight nonpregnant, nonlactating sows over eight periods, each of 16 days duration, to measure potential fatty acid induced thermogenesis. During the first and last experimental periods, the animals received a basal ration which just covered the energy maintenance requirement. In the second to seventh periods supplements of olive oil, fish oil, or puffed wheat starch as reference nutrient were added to the diet in random sequence at two levels up to 50% above the maintenance requirement. All rations were calculated with reference to the sows' initial weight and remained quantitatively unchanged throughout the experiment. The animals were fed twice daily. During each metabolism period a complete energy balance was assessed for all sows by means of collection technique (feed, feces, urine), and 48-h measurements of the gas exchange in a respiration chamber. The sows' body mass increased linearly during the course of the experiment by 5.8 kg per period. The three supplement types had no influence on the animals' final body weight, wich averaged 205.5 kg with the starch supplement, 204.8 kg with olive oil, and 205.8 kg with fish oil. Energy digestibility (DE/GE) was 100% for all three supplements, and metabolizability of energy (ME/GE) one percentage point less. Carbon and energy depositions showed a pronounced linear relationship to the level of supplementation and were also influenced by the type of supplement. Heat production was 20.9 MJ/d after feeding the basal ration alone and, taking the average of the two supplementation levels, 21.6 MJ for the starch supplement, 21.0 MJ for olive oil, and 20.6 MJ for fish oil.(ABSTRACT TRUNCATED AT 250 WORDS)
Kirchgessner
M
M
Institut für Ernährungsphysiologie, Technische Universität München, Freising-Weihenstephan.
Müller
H L
HL
D000821:Animal Feed; D000818:Animals; D001833:Body Temperature Regulation / Q000187:drug effects* / Q000502:physiology; D001835:Body Weight / Q000187:drug effects / Q000502:physiology; D002153:Calorimetry, Indirect; D004042:Dietary Fats, Unsaturated; D002149:Energy Intake / Q000187:drug effects* / Q000502:physiology; D004734:Energy Metabolism / Q000187:drug effects* / Q000502:physiology; D005260:Female; D005395:Fish Oils / Q000494:pharmacology*; D009751:Nutritional Requirements; D009753:Nutritive Value; D000069463:Olive Oil; D010938:Plant Oils / Q000494:pharmacology*; D013552:Swine
D004042:Dietary Fats, Unsaturated; D005395:Fish Oils; D000069463:Olive Oil; D010938:Plant Oils