Weaning is a source of social, nutritional and environmental disorders that challenge piglet health. This study assesses the relevance using plasma indicators oxidative status as biomarkers health around weaning in pigs. Blood antioxidant potential (BAP), hydroperoxides (HPO), stress index (OSI, e.g. HPO/BAP), vitamin A E concentrations were investigated two different trials. Trial was carried out an experimental unit to investigate effects age (from 12 147 days age), (at 21 or 28 age)...

Different housing systems can be used in pig production and little is known about their effect on gut microbiota composition. In this study we characterized fecal by sequencing the rRNA genes sows kept during gestation conventional pens with a slatted floor enriched covered deep straw. After farrowing, of 1- 4-day-old piglets were also monitored. Microbiota from system contained significantly more Prevotella, Parabacteroides, CF231, Phascolarctobacterium, Fibrobacter, Anaerovibrio YRC22 less...

Pigs selected for high performance may be more at risk of developing diseases. This study aimed to assess the health and two pig lines divergently residual feed intake (RFI) (low RFI (LRFI) v. (HRFI)) housed in contrasted hygiene conditions (poor good) using a 2×2 factorial design (n=40/group). The challenge period (Period 1), started on week zero (W0) when 12-week-old pigs were transferred good or poor housing conditions. At 6 (W6), half each group slaughtered. During recovery 2) from W6...

Dans le cadre du projet européen PPILOW (2019-2024, https://www.ppilow.eu/), l’application PIGLOW, qui bénéficie d’un développement pour téléphones portables, a été mise en place. Elle permet de réaliser des évaluations bien-être animal (BEA), dans les élevages femelles gestantes, allaitantes et leurs porcelets, porcelets post-sevrage porcs charcutiers croissance. L’évaluation est réalisée sur environ 60 critères. Une synthèse générée automatiquement principaux résultats sont représentés...

This study describes the fecal microbiota from piglets reared in different living environments during weaning transition, and presents characteristics of associated with good growth after weaning. Fecal samples were collected pre- (d26) post-weaning (d35) 288 male 16 conventional indoor commercial farms located West France. The changes one week on most abundant microbial families was roughly same all farms: alpha diversity increased, relative abundance Bacteroidaceae (-61%),...

Abstract Social behavior is a key component of pig welfare on farms, but little known the development social behaviors in piglets. This study aimed to explore and identify early styles suckling 68 piglets from 12 litters were scored continuously for 8 h per day at 21 42 days age, included Hierarchical Clustering Principal Components analysis clusters pigs with similar styles. nosing represented 78% all interactions given. Three identified: low-solicited inactive animals (inactive), active...

Colostrum intake, which is critical for piglet survival after birth and growth up to weaning, greatly depends on weight vitality at birth. Our aim was identify a set of biological variables explaining individual variations in colostrum preweaning risk dying. Farrowing traits, morphological traits intake were determined 504 piglets born alive from 37 Landrace × Large White sows. A subset 203 these used measure plasma neonatal concentrations metabolites hormones blood collected the umbilical...

Pregnant sows are exposed to various stressors in intensive pig husbandry that may have negative consequences on their health, reproductive performances and welfare. Social stress is one of these challenges, because gestating be housed groups according EU guidelines (2001/88/CE). The purpose this study was determine the repeated social pregnant female pigs behavioural, endocrine immunological responses pregnancy outcome. gilts were submitted a procedure induced by housing unfamiliar pairs...

Since decades, production traits such as growth rate, feed efficiency or body composition have been drastically increased in pigs by genetic selection. Whether this selection impacted animal robustness is still unclear. In study, we compared Large White (LW) pigs, a breed submitted to intense for traits, and Basque (B) local rustic breed, reared two different housing environments (conventional v. enriched). Adaptation conditions among each was evaluated at the level of endocrine immune...

Abstract Background Poor hygiene of housing induces a systemic inflammatory response. Because inflammation and oxidative stress are processes that can sustain each other, the ways pigs able to activate their antioxidant defenses critical for production performance health during periods when immune system is solicited. Selection also influence reactive oxygen species (ROS) expression levels genes involved in cellular response different tissues. To establish extent by which poor selection feed...

In the search for biological basis of robustness, this study aimed (i) at determination heritability cortisol response to ACTH in juvenile pigs, using restricted maximum likelihood methodology applied a multiple trait animal model, and (ii) relationships between basal stimulated levels with corticosteroid-binding globulin (CBG), IGF-I haptoglobin, all important players glucose metabolism production traits. At 6 weeks age, 298 intact male female piglets from 30 litters (30 dams boars) were...

Rearing entire pigs may lead to meat quality and welfare problems in relation pubertal development. A better knowledge of the sources variation development, behaviour boar taint is needed before generalizing male pigs. From 84 days age, were reared groups 10 either a conventional (C, 1 m²/animal, slatted floor) or an enriched (E, 2.5 straw bedding, outdoor run) housing during spring autumn fed ad libitum (n=10/housing/season). Mounting was observed for 3 h third (M3), fourth (M4) fifth (M5)...

Social disruption (SDR) is an effective model of social stress associated with enhanced inflammatory reactivity the immune system. The aim present study was to further describe SDR effects on cytokine production by spleen cells, testing selectively monocyte and T cell functions as a result this stressor. For purpose, splenocytes from control mice (C) socially stressed for 7 days were cultured in presence lipopolysaccharide (LPS) or concanavalin A (Con A). Splenocyte proliferation,...