Ir. M.M.J.A. Rijnen : Energetic utilization of dietary fiber in pigs

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23 Jun 2003 13:30
Unit: Wageningen University
Location: Aula (gebouw 362), Gen. Foulkesweg 1, Wageningen
Promotor: prof.dr.ir. M.W.A. Verstegen (Animal Nutrition - Monogastrics)
Co Promotor: dr.ir. J.W. Schrama

 The energetic utilization of fermentable dietary fiber (fDF) of different fiber sources and its relation to physical activity and housing conditions was studied in three experiments. It was found that the energetic utilization of fDF from sugar beet pulp silage (SBPS) was 14.7 kJ/g in group-housed sows. The relatively high energetic utilization of fDF from SBPS was related to the decreased activity-related heat production (AHP) with fDF intake. In group-housed growing pigs, the energetic utilization of fDF from solvent-extracted coconut meal and soybean hulls was similar; on average 10.6 kJ/g, and there was no relationship between the intake of fDF and AHP. Digestibility and metabolizability of dietary energy was higher for individually housed growing pigs than for group-housed growing pigs. It was concluded that there are differences in the energetic utilization of fDF from different origin. Differences in energy expenditure on physical activity play an important role.
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