Estimation de la digestibilité de l'herbe pâturée par le mouton adulte au moyen de la lignine selon Christian. Essais préliminaires

International audienc

Truies gestantes alimentées au DAC, faut-il réserver un logement séparé aux nullipares?

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Analyse des modalités d'utilisation d'un distributeur automatique de concentré (DAC) par des truies gestantes logées en groupe dynamique

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Ecopathological studies of risk factors responsible for outbreaks of mastitis in Walloon dairy herds

La mammite a de multiples origines et est souvent de type subclinique, rendant contrôle et surveillance difficiles. La majorité des études relatives aux mammites se caractérise par une approche individuelle. Le cadre expérimental restreint de celles-ci ne permet pas une interprétation précise des observations, à la suite du nombre limité de facteurs étudiés. L’approche choisie pour cette étude se veut globale et implique un grand nombre d’exploitations. Elle a pour objectifs d’identifier et de hiérarchiser, au travers d’une enquête, les caractéristiques générales de traite et les conditions environnementales des élevages laitiers influençant le statut sanitaire du pi

Effet des consommations alimentaires sur les émissions gazeuses associées à l'élevage de truies gestantes en groupe sur litière.

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Effects of dietary fibres on greenhouse gas and ammonia emissions associated to gestating sows

[en] Usually, gestating sows are restrictedly-fed to prevent excessive body weight gain and fat deposition. However, feed restriction causes sustained feeding motivation resulting in stereotypic behaviour and impairment of animal welfare. High fibre diets (HFD) are known to reduce feeding motivation without impairments of performance but the effects of HFD on emissions of pollutant gases are very few studied. Thus, a study was carried out to compare the effect of two fibre contents (standard diet (STD) with 22% of non-starch polysaccharides (NSP) vs. HFD with 44% of NSP) on emissions of ammonia (E-NH3), nitrous oxide (E-N2O), methane (E-CH4) and CO2-equivalents (E-EqCO2) associated to gestating sows. Three successive batches of 10 gestating sows were divided into 2 homogeneous groups and randomly allocated to one of two treatments: STD vs. HFD. The groups were kept separately in two identical rooms equipped with a pen divided into a lying area with slatted floor and five individual feeding stalls with permanent access. Emissions were measured by infrared photoacoustic detection. The HFD significantly decreased ENH3 (12.1 vs. 15.9 g/sow.day) but increased E-EqCO2 (0.68 vs. 0.47 kg/sow.day) in relation with an increase of E-CH4 (18.4 vs. 9.1 g/sow.day), E-N2O being not impacted by the diet, with value around 0.60 g/sow.day. So, the effects of HFD offered to gestating sows on slatted floor on environment seem conflicting with a decrease of NH3 emissions which mainly contribute to acidification of soils and waters and eutrophication, but an increase of CO2-quivalents emissions which contribute to greenhouse effect and climate change.info:eu-repo/semantics/publishe

Le cortisol salivaire comme indicateur du bien-être chez la truie gestante lors de regroupement.

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Using lupin seeds to replace soybean meal in pig feed: effect of alpha-galactosidase supplement and lupin variety on nitrogen retention and diet digestibility in pigs.

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