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Détection précoce et automatisée des problèmes sanitaires

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L’IFIP travaille sur le développement d’alertes à partir de différents signaux: sur l’eau (Gestantes, Engraissement, Post-sevrage), sur l’aliment (Gestantes, Engraissement) et sur l’activité (Gestantes, engraissement) : RFID, activité ... pour améliorer le suivi technique et sanitaire.

PDF icon visuels d'intervention de Michel Marcon Space 2015
2015

Effets de l’exposition au chaud sur les caractéristiques de la prise alimentaire du porc à différents stades physiologiques

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L’exposition des porcs à des températures ambiantes élevées s’accompagne d’une chute des performances chez le porcelet sevré, le porc en croissance et la truie en lactation. Cet effet négatif de la chaleur s’exerce notamment via une diminution de la consommation spontanée d’aliment.
2000

Voluntary feed intake and feeding behaviour of group-housed growing pigs are affected by ambient temperature and body weight

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The effect of ambient temperature on individual feeding behaviour was studied in six groups of Piétrain×Large White barrows. In experiment 1 (two groups), ambient temperature varied in a cyclic way from 22 to 12°C and 12 to 22°C with three or four consecutive days at each of the following temperatures: 22, 19, 16, 14 or 12°C. Similarly, in experiment 2 (two groups), temperature varied from 19 to 29°C and 29 to 19°C with three or four consecutive days at 19, 22, 25, 27 or 29°C. In both experiments, each group was used over two successive cycles with an initial body weight (BW) of 37 kg at cycle 1 (four pigs per group) and 63 kg at cycle 2 (three pigs per group). During experiment 3, groups of four pigs were exposed to varying temperatures over one cycle either as in experiment 1 (one group) or as in experiment 2 (one group); their initial BW was 45 kg. Photoperiod was fixed to 12 h of light. In experiments 1 and 2, neither the daily number of meals (11) nor the rate of feed intake (37 g/min) were affected by temperature. The daily number of meals was lower at cycle 2 (9 vs. 12 at cycle 1 on average) but their size was higher (305 vs. 181 g/meal at cycle 1). The feeding pattern was mainly diurnal (62%). From individual data obtained at each temperature level and each stage of growth in this study (N=296), an equation to predict the voluntary feed intake (VFI) from temperature (T, ranging between 12 and 29°C) and body weight (BW, ranging between 30 and 90 kg) is proposed: VFI (g/d)=−1264+117T−2.40T2+73.6BW−0.26BW2−0.95T×BW (RSD=329). The present relationship indicates that VFI depends on temperature and body weight with a marked negative effect of high ambient temperatures in heavier pigs.

2000

Influence of high ambient temperatures on feed intake and feeding behaviour of multiparous lactating sows

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Multiparous Large White sows (n = 63) were used to investigate the effects of five ambient temperatures (18, 22, 25, 27, and 29 degrees C) and two dietary protein contents on their lactation performance. At each temperature treatment, ambient temperature was maintained constant over the 21-d lactation period. Dietary protein content was either 14 or 17% with essential amino acids levels calculated not to be limiting. The animals had ad libitum access to feed between the seventh and the 19th day of lactation. Diet composition did not influence lactation performance.
1999