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Effects of rearing system on performance, animal welfare and meat quality in two pig genotypes

Abstract : The effects of an alternative rearing system (O) for growing-finishing pigs (sawdust-shave bedding with free outdoor access, 2.4 m²/pig) compared to a conventional (C) one (slatted floor, 0.65 m²/pig) were evaluated for performance, animal welfare and meat quality in two (Duroc or synthetic line crossbreds) genotypes. Trials were conducted in spring and winter, each involving one pen of 10 pigs / genotype / system (a total of 40 pigs / season). No significant interactions between rearing system and genotype were observed on any of the traits evaluated. On the whole, the O pigs spent 40% more time on exploratory activities, in particular towards the bedding, suggesting an improved animal welfare with the O system. Urine levels of cortisol and catecholamines in the O were similar with those in C pigs at 70kg. The O pigs exhibited a 6% increase in growth rate and were 5kg heavier at slaughter at the same age. Back fat depth and lean meat content, as well as plasma ACTH and cortisol, and urine cortisol and catecholamines levels at slaughter were not significantly affected by the rearing system. The O pigs exhibited similar pH1 and pHu values, higher drip losses, but also higher intramuscular fat contents. The O system improved loin juiciness, but did not influence other eating quality traits.
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https://hal.inrae.fr/hal-02761300
Contributor : Migration Prodinra <>
Submitted on : Thursday, June 4, 2020 - 5:38:29 AM
Last modification on : Friday, May 7, 2021 - 10:12:02 AM

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  • HAL Id : hal-02761300, version 1
  • PRODINRA : 3506

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Bénédicte Lebret, Marie-Christine Meunier-Salaün, Aline Foury, Eric Dransfield, Jean-Yves Dourmad. Effects of rearing system on performance, animal welfare and meat quality in two pig genotypes. 56. Annual Meeting of the European Association for Animal Production (EAAP), European Federation of Animal Science (EAAP). INT., 2005, Uppsala, Sweden. 7 p. ⟨hal-02761300⟩

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