title: Energy metabolism in relation to physical activity in growing pigs as affected by type of dietary carbohydrate.
abstract: The effect of dietary carbohydrate source on physical activity in relation to metabolic rate in pigs was studied. Six groups of 12 pigs (50-kg, castrated males) were fed one of two diets: a starch diet or a non-starch polysaccharide (NSP) diet. Both diets had a similar calculated net energy content. The starch diet contained 13% tapioca, and the NSP diet contained 17% sugar beet pulp silage. Pigs were housed in groups and fed at approximately two times maintenance (approximately 900 kJ ME.kg-.75.d-1). Nitrogen and energy balances were measured per group during a 7-d experimental period, which was preceded by a 2-wk adaptation period. Heat production and physical activity were measured during successive discrete 9-min intervals. Metabolizability of gross energy was 79.4% and 78.2% for the starch-fed and NSP-fed pigs, respectively (P < .10). Activity differed between treatments. Activity-related heat production tended to be higher for the starch-fed pigs than for those fed the NSP diet (P < .10); 118 and 90 kJ.kg-.75.d-1, respectively. During the dark phase of the day (from 2000 to 0800) activity-related heat production was 8 kJ.kg-.75.d-1 higher for the starch fed pigs than for those fed the NSP diet (P > .1) whereas during the light phase, this difference was 48 kJ.kg-.75.d-1 (P < .10). Retained energy was similar for both treatments. These results show that dietary composition can change physical activity of pigs and thereby affect their energy utilization.
authors.affiliation: Department of Animal Husbandry, Wageningen Institute of Animal Science, Wageningen Agricultural University, The Netherlands.
authors.forename: J W
authors.initials: JW
authors.lastname: Schrama
authors.forename: M W
authors.initials: MW
authors.lastname: Verstegen
authors.forename: P H
authors.initials: PH
authors.lastname: Verboeket
authors.forename: J B
authors.initials: JB
authors.lastname: Schutte
authors.forename: J
authors.initials: J
authors.lastname: Haaksma
mesh_terms: D000818:Animals; D001823:Body Composition / Q000187:drug effects / Q000502:physiology; D004040:Dietary Carbohydrates / Q000494:pharmacology*; D004734:Energy Metabolism / Q000502:physiology*; D008297:Male; D009584:Nitrogen / Q000378:metabolism; D010805:Physical Conditioning, Animal / Q000502:physiology*; D011134:Polysaccharides / Q000494:pharmacology; D011897:Random Allocation; D013213:Starch / Q000494:pharmacology; D013552:Swine / Q000254:growth & development* / Q000378:metabolism / Q000502:physiology*
chemical_list: D004040:Dietary Carbohydrates; D011134:Polysaccharides; D013213:Starch; D009584:Nitrogen