Digestibility and metabolic utilisation of dietary energy in adult sows: influence of addition and origin of dietary fibre

Abstract

According to a 4 £ 4 Latin square design, four adult ovariectomised sows fed at a similar energy level (516 kJ ME/kg body weight (BW) 0·75 per d) received one of four diets successively: a control low-dietary-fibre (DF) diet (diet C, 100 g total DF/kg DM) and three fibrerich diets (200 g total DF/kg DM) that corresponded to a combination of diet C and maize bran (diet MB), wheat bran (diet WB), or sugar-beet pulp (diet SBP). Sows were adapted to the diet for 12 d before an 8 d measurement period. Digestibility of energy and nutrients in the diets, and total heat production (HP) and its components (fasting HP, activity HP and thermic effect of feeding (TEF), were measured. The TEF was partitioned between a short-term component (TEF st ) and a long-term component (TEF lt ). Total tract digestibility of nutrients and energy was greater for diet C; among the three other diets, the digestibility coefficients were higher for diet SBP than for diets MB and WB. Energy losses from CH 4 were linearly related to the digestible total DF intake (+1·4 kJ/g). Fasting HP at zero activity averaged 260 kJ/kg BW 0·75 per d. Activity HP represented 20 % total HP, or 83 kJ/kg BW 0·75 per d on average. Total TEF and TEF lt were higher (P,0·05) for diet WB than for the other diets. However, total HP (406 kJ/kg BW 0·75 per d) was not significantly affected by diet characteristics. Our results suggest that metabolic utilisation of dietary energy is little affected by the addition and origin of DF, at least under the conditions of the present study.

Net energy content of five fiber‐rich ingredients fed to pregnant sows

“…The THP (mean value = 418 kJ/kg BW 0.75 /day) in the present study was close to the mean value reported by Le Goff et al () and Ramonet et al (). In addition, the FHP averaged 326 kJ/kg BW 0.75 /day and was within the values in pregnant sows (289–351 kJ/kg BW 0.75 /day during pregnancy) obtained by Ramonet et al ().…”

“…The ME:DE ratio (average 96.4%) was not significantly different among diets. The ME:DE ratio of the present study was higher than the results of Le Goff et al () which averaged 94.4% and higher CP content may contribute to this difference.…”

“…Utilization of DF led to the emission of methane during fiber fermentation in the hindgut of sows. The methane production was on average 1.1% of DE which was close to the mean value reported by Le Goff, Groumellec, van Milgen, Dubois, and Noblet () in sows fed slightly lower than in the present study (mean value 515 kJ/kg BW 0.75 /day vs. 544 kJ/kg BW 0.75 /day).…”

“…In addition, the FHP averaged 326 kJ/kg BW 0.75 /day and was within the values in pregnant sows (289–351 kJ/kg BW 0.75 /day during pregnancy) obtained by Ramonet et al (). However, both estimates were higher than values in non‐pregnant sows (Le Goff et al, ; Noblet & Shi, ). Results of Ramonet et al () suggested that FHP increased with the pregnancy which indicated that difference between non‐pregnant sows and pregnant sows may contribute greatly to the variability of FHP.…”

Desempenho de suínos alimentados do desmame ao abate em comedouro de acesso único equipado ou não com bebedouro

“…Ciência Rural, v.34, n.5, set-out, 2004. dieta reduz o coeficiente de utilização da proteína e da gordura (NOBLET & LE GOFF, 2001, LE GOFF et al, 2002. As razões explicativas da diferença de níveis nutricionais entre as rações crescimento e terminação foram de ordem mercadológica.…”