Approach to the energetic importance of fibre digestion in pigs. I. Importance of fermentation in the overall energy supply

Dierick, Noël; Vervaeke, I. J.; Demeyer, Daniël; Decuypere, Jaak

doi:10.1016/0377-8401(89)90095-3

Cited by 128 publications

(83 citation statements)

References 77 publications

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“…This result contradicts with the NE prediction equations of Noblet et al [17], which showed a greater heat increment for fibre-rich diets. Our results are also in contradiction with biochemical approaches which expected greater gas production (CH 4 , H 2 ) and fermentation HP and lower metabolic utilisation of fermentation products (i.e., volatile fatty acids) of animals fed fibre-rich diets [7]. For instance, it has been reported that a 1% increase in crude fibre of cereals depresses the NE utilisation by 0.7%.…”

Section: Influence Of Dietary Fibre On Metabolic Utilisation Of Energcontrasting

confidence: 99%

“…VI) was digested in growing and finishing pigs. In fact, it appears that nutrient faecal losses (e.g., N or fat) increased in the presence of DF; this can be related to endogenous secretions associated with the higher microbial activity in the hindgut [7,14,19].…”

Section: Influence Of Dietary Fibrementioning

confidence: 99%

“…This effect becomes less pronounced with increasing body weight (BW) of pigs [5,21]. The metabolic utilisation of energy is also expected to be affected since the net energy equations proposed by Noblet et al [17] and the biochemical approach of Dierick et al [7] indicate a greater heat increment of DF than of the other fractions. However, these results were not always confirmed by measurements of heat production (HP) in which fibre-rich diets were fed to growing pigs [11,28].…”

Section: Introductionmentioning

confidence: 99%

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Influence of dietary fibre level on digestive and metabolic utilisation of energy in growing and finishing pigs

et al. 2002

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-The aim of the experiment was to determine the effect of dietary fibre (DF) level on the digestive and metabolic utilisation of energy in pigs. Two diets were prepared: a control low DF diet (the C diet, 100 g Total Dietary Fibre (TDF)·kg -1 DM) and a fibre-rich diet (200 g TDF·kg -1 DM) which corresponded to a combination of the C diet and maize bran (the MB diet). Each diet was fed as pellets during two successive experimental periods to five, individually caged pigs at growing (42 kg BW) and finishing stages (76 kg BW) for the measurement of digestibility, heat production (HP; indirect calorimetry) and its components. Energy supply was standardised between the diets (2.4 and 2.3 MJ ME·d -1 ·(kg BW) -0.60 for growing and finishing pigs, respectively). The energy digestibility was not affected by growth stage but was lower for the MB diet (83%) than for the C diet (91%). Similarly, the DE value of maize bran (11.5 MJ·kg -1 DM), as calculated by the difference method, was similar at both stages. The fasting HP represented 56% of HP and averaged 0.724 MJ·d -1 ·(kg BW) -0.60 while the physical activity and thermic effect of feed represented on average 14 and 30% of HP, respectively. None of the components of HP was affected by the DF level. The activity HP was greater in finishing (16% of HP) than in growing pigs (12%). Energy cost of standing was constant (kJ·min -1 ) when expressed per kg BW 1.25 . When adjusted for similar ME intake and activity level, total HP and retained energy did not differ between the diets and between the growth stages. In conclusion, the metabolic utilisation of dietary energy was little affected by the DF level in growing and finishing pigs under the conditions of the present study. et un régime enrichi en parois végétales (200 g de fibres totales par kg MS) où une fraction du régime T est remplacée par des drèches de maïs (régime DM). Chaque régime a été distribué successivement à 5 porcs au stade croissance (42 kg PV) et au stade finition (76 kg). Les animaux étaient maintenus individuellement en cage métabolique placée dans une chambre respiratoire afin de mesurer les coefficients d'utilisation digestive de l'énergie et des nutriments ainsi que la production de chaleur totale (calorimétrie indirecte) et ses composantes. Les niveaux alimentaires ont été égalisés à chaque stade (2,4 et 2,3 MJ EM·j -1 ·kg PV -0,60 pour les porcs en croissance et en finition, respectivement). Le coefficient d'utilisation digestive de l'énergie n'était pas différent selon le stade de croissance des animaux ; à chaque stade il était plus faible pour le régime DM (83 %) que pour le régime T (91 %). De la même façon, la valeur ED des drèches de maïs (11,5 MJ·kg -1 MS), déterminée à l'aide du calcul par différence, était comparable aux deux stades. La production de chaleur à jeun (0,724 MJ·j -1 ·kg PV -0,60 ) représentait en moyenne 56 % de la production de chaleur totale tandis que la production de chaleur liée à l'activité physique et l'effet thermique de l'aliment en représentaient 14 et 30 %, r...

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Section: Influence Of Dietary Fibre On Metabolic Utilisation Of Energcontrasting

confidence: 99%

Section: Influence Of Dietary Fibrementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of dietary fibre level on digestive and metabolic utilisation of energy in growing and finishing pigs

et al. 2002

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“…Fiber effects on feed digestibility were different and consistent with the solubility of their components. While Bach Knudsen et al (1993) found inverse correlation between the proportion of crude fiber (insoluble) and the digestibility of the diet due to the higher digesta passage rate with consequent lower fermentation period, Dierick et al (1989) observed that this relation was not applicable for ingredients rich on soluble fiber, as alfalfa, soy hulls, wheat meal, and beet pulp, probably as consequence of high fermentability of these sources.…”

Section: Statistical Analysesmentioning

confidence: 98%

“…Thus, pectin, an important compound of citrus pulp fiber, is highly fermentable, and being soluble shows high coefficient of digestibility, this was confirmed by the high DCNSDF here observed (Table 4). On the other hand, insoluble fractions, measured by NDF and ADF analyses, and composed by insoluble hemi-cellulose; cellulose and lignin (Dierick et al, 1989) of low fermentation in the digestive tract of swine shown low digestibilities. Citrus pulp presented a CP level of 6.35%, but its coefficient of digestibility was only 13.98%.…”

Section: Trialmentioning

confidence: 99%