Influence of fibrous feed ingredients on voluntary intake of dry sows

Brouns, Francis; Edwards, Sandra A.; English, P. R.

doi:10.1016/0377-8401(95)00767-h

Cited by 55 publications

(33 citation statements)

References 12 publications

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“…V). This result did not confirm the data obtained in grouphoused growing pigs [27] or in adult sows [3], which indicate that animals are quieter with increased DF level. However, in agreement with the results of the present study, Ramonet et al [13,25] and Le Goff and Noblet (unpublished data) found no effect of DF content on HP act in adult sows housed individually in respiration chambers.…”

Section: Influence Of Dietary Fibre On Metabolic Utilisation Of Energcontrasting

confidence: 92%

“…2 Mean body weight in the middle of the period in the respiration chamber. 3 The additional peak of heat production (i.e. "ghost" phenomenon) was included in the short-term TEF (see text).…”

Section: Calculations and Statistical Analysesmentioning

confidence: 99%

“…2 Mean body weight in the middle of the period in the respiration chamber. 3 According to a non-linear regression model, HP act while standing (kJ·min -1 ) was proportional to the body weight raised to the power 1.25. Consequently, HP act while standing was expressed as kJ·min -1 ·kg BW -1.25 .…”

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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: 92%

Section: Calculations and Statistical Analysesmentioning

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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“…We were not so much interested in the sows' motivation to feed, but rather in how lameness status affects the likelihood that a sow will fulfil this motivation. To achieve this goal, we used a reward that had great incentive value because it was highly palatable and because our sows were fed at commercial feed levels, which satisfy only about 40% to 60% of their ad libitum feed intake (Brouns et al, 1995;Meunier-Salaün et al, 2001). Such commercial feeding levels are known to leave sows hungry (Lawrence et al, 1988;Lawrence and Terlouw, 1993).…”

Section: Discussionmentioning

confidence: 99%

“…The group pens (3.34 m 2 /sow) had a partly slatted concrete floor and solid concrete laying areas. The sows were fed a restricted diet as commonly used in practice, with 2.6 kg of a commercial gestation diet fed from an electronic sow feeder, which satisfies only about 40% to 60% of their ad libitum feed intake (Brouns et al, 1995;Meunier-Salaün et al, 2001). Water was available ad libitum.…”

Section: Test Arenamentioning

confidence: 99%

Effect of locomotion score on sows’ performances in a feed reward collection test

Bos

Nalon

Maes

et al. 2015

Animal

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Sows housed in groups have to move through their pen to fulfil their behavioural and physiological needs such as feeding and resting. In addition to causing pain and discomfort, lameness may restrict the ability of sows to fulfil such needs. The aim of our study was to investigate the extent to which the mobility of sows is affected by different degrees of lameness. Mobility was measured as the sow's willingness or capability to cover distances. Feed-restricted hybrid sows with different gait scores were subjected to a feed reward collection test in which they had to walk distances to obtain subsequent rewards. In all, 29 grouphoused sows at similar gestation stage (day 96.6 ± 7 s.d.) were visually recorded for gait and classified as non-lame, mildly lame, moderately lame or severely lame. All sows received 2.6 kg of standard commercial gestation feed per day. The test arena consisted of two feeding locations separated from each other by a Y-shaped middle barrier. Feed rewards were presented at the two feeders in turn, using both light and sound cues to signal the availability of a new feed reward. Sows were individually trained during 5 non-consecutive days for 10 min/day with increasing barrier length (range: 0 to 3.5 m) each day. After training, sows were individually tested once per day on 3 non-consecutive days with the maximum barrier length such that they had to cover 9.3 m to walk from one feeder to the other. The outcome variable was the number of rewards collected in a 15-min time span. Non-lame and mildly lame sows obtained more rewards than moderately lame and severely lame sows ( P < 0.01). However, no significant difference was found between non-lame and mildly lame sows ( P = 0.69), nor between moderately lame and severely lame sows ( P = 1.00). This feed reward collection test indicates that both moderately lame and severely lame sows are limited in their combined ability and willingness to walk, but did not reveal an effect of mild lameness on mobility. These findings suggest that moderately and more severely lame sows, but not mildly lame sows, might suffer from reduced access to valuable resources in group housing systems.

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Hunger Associated with Restricted Feeding Systems

Tolkamp¹,

D’Eath²

2016

Animal Welfare

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Influence of fibrous feed ingredients on voluntary intake of dry sows

Cited by 55 publications

References 12 publications

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

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

Effect of locomotion score on sows’ performances in a feed reward collection test

Hunger Associated with Restricted Feeding Systems

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