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Article Dans Une Revue Animal Année : 2009

Influence of pig rearing system on animal performance and manure composition

Résumé

A total of 200 crossbred pigs (castrated males and females) were used in five replicates to evaluate the influence of rearing conditions for fattening pigs on growth performance, manure production and gaseous emissions. Approximately at 36 kg body weight (BW), littermates were allocated to either a conventional (fully slatted floor 0.65 m(2)/pig, considered as control, CON) or an alternative (sawdust bedding, 1.3 m(2)/pig, with free access to an outdoor area 1.1 m(2)/pig, OUT) system, until slaughter at approximately 115 kg BIN Pigs had free access to standard growing and finishing diets. Manure was stored as slurry below the slatted floor in the CON system and as litter for the inside area, or slurry and liquid, for the outside area, in the OUT system. The amount and composition of manure were determined at the end of each replicate. Ammonia emission from the rooms was measured continuously, Dust and odour concentrations were measured in replicates 1 and 2 and CH(4), N(2)O and CO(2) emissions were measured in replicate 3. Compared with the CON, the OUT pigs exhibited a faster growth rate (+8%, P < 0.001) due to their greater feed intake (+0.21 kg/day, P < 0.01), resulting in a heavier BW (+7.3 kg, P < 0.001) and a lower lean meat content (-1.6% points, P < 0.001) at slaughter The total amount of manure produced per pig was similar in both systems (380 kg/pig), but because of the contribution of sawdust, dry matter (DM) content was higher (P < 0.001) and concentrations in N, P K, Cu and Zn in DM were lower (P < 0.001) in manure from the OUT than from the CON system. In the OUT system, most of the manure DM (70%) was collected indoor, corresponding mostly to the contribution of the sawdust, and most of the manure water (70%) was collected outdoor Pigs excreted indoor about 60% and 40% of urine and faeces respectively. Ammonia emission from the room was lower for the OUT system, whereas total NH(3) emissions, including the outdoor area, tended to be higher (12.0 and 14.1 g/day N-NH(3) per pig for CON and OUT, respectively). Nitrous oxide emission was higher (1.6 and 4.6 g/day N-N(2)O per pig for CON and OUT, respectively) and methane emission was lower (12.1 and 5.9 g/day per pig for CON and OUT respectively), for the OUT compared with the CON system.

Dates et versions

hal-01460859 , version 1 (07-02-2017)

Identifiants

Citer

Jean-Yves Dourmad, Mélynda Hassouna, Paul Robin, Nadine Guingand, Marie-Christine Meunier-Salaün, et al.. Influence of pig rearing system on animal performance and manure composition. Animal, 2009, 3 (4), pp.606-616. ⟨10.1017/S1751731108003601⟩. ⟨hal-01460859⟩
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