Paille ou objets à manipuler : quelle attractivité pour le porc en croissance logé sur caillebotis ?

51es Journées de la Recherche Porcine, 5 et 6 février 2019, Paris, p. 57-58 , par Valérie Courboulay et Nadine Guingand, poster

Poster.

La diversité de matériaux d’enrichissement utilisables en élevage dépend largement des conditions de logement. La distribution de paille se heurte à la difficulté de gérer ce matériau dans les systèmes sur caillebotis compte tenu du mode d’évacuation des déjections. L’étude se propose d’évaluer la possibilité d’utiliser de la paille en brins courts, en associant cet apport à la technique du lisier flottant (Guingand et Courboulay, 2019). Deux dispositifs de distribution de paille sont testés et comparés à trois objets, organiques ou non, quant à leur attractivité pour les porcs.

Attractiveness of straw or various objects for growing pigs housed on slatted floors

Straw is an interesting enrichment material for pigs, but it is difficult to use on farms with slatted floors because of the manure emptying system. Distribution of chopped straw could be an alternative. The aim of the study was to compare the interest of chopped straw to growing pigs to those of various objects, either organic or not. Four identical rooms comprising six pens of nine pigs were used in the experiment. The test was repeated on two batches. In one room, enrichment material in three pens consisted of a straw rack or a straw feeder. In the other three pens, three objects were provided, each in two pens: a “wooden octopus” fixed to the ground, a long chain, or a Bite-Rite. Pig behaviour and individual physical scores (wounds, lameness, aggression) were measured four times during the fattening period. The amount of straw used was low: 8.3 and 10.1 g/pig/day for the straw rack and straw feeder, respectively. Pigs were interested more (P < 10-3) in the wooden octopus (17.6% of observations) than in the chain (7.5%) and Bite-Rite (6.3%) and more (P < P < 10-3) in straw rack (13.3%) than in or straw feeder (6.0%). Ear lesions were more severe with the straw rack than with the octopus. These results highlight the importance of the design of enrichment devices for pigs.