Project description:Transcriptional profiling in subcutaneous adipose tissue of 24 pigs of 115 kg body weight from lines divergently selected for residual feed intake (RFI): low-RFI pigs (RFIneg), high-RFI pigs (RFIpl) and high-RFI pigs restricted at RFIneg feeding level (RFIplR) to investigate the impact of feeding independently of selection.
Project description:The aim of this study was to investigate whether long term intake of pea fiber would improve colonic barrier, bacterial profile and alter colonic gene expression using DNA microarray. Fifty weaned pigs were randomly allocated into 2 groups receiving control and fibrous diet with inclusion of pea fiber from weaning age until d 160. The two diets had similar nutrient levels. Pigs fed pea fiber diet (PF diet) had markedly decreased overall average daily feed intake (ADFI) and Feed:Gain in growing and finishing period (P<0.05). In addition, long term intake of PF diet induced deeper crypt (+50 %, P<0.05), increased protein expression of colonic mucin and sIgA (+13~16 %, P<0.05). Resulting from the increased lactobacillus content (P<0.05), moreover, pigs fed PF diet had significantly higher concentration of colonic total short chain fatty acid (SCFA) and acetic acid. DNA microarray results indicated that feeding PF diet induced alterations in the expression of colonic cancer, immune response and lipid metabolism-related genes, as well as genes involved in signal pathway such as intestinal immune network for IgA production, PPAR signaling pathway and nutrient metabolism-related pathways. Collectively, our results suggested that long term intake of PF diet would improve colonic health via altering colonic bacteria profile, colonic barriers, immune and metabolism related protein or gene expressions. A total of 50 weaned pigs (Duroc×Landrace×Yorkshire, initial body weight: 7.2±0.5 kg) were randomly allocated to 2 groups with 5 pens each group and 5 pig each pen. Pigs were fed control (Control) and fibrous diets (10~20 % inclusion of pea fiber, PF) from weaning at 28 day to 160 day-old-age, which is subjected to phase feeding by weaning diet (weaning to d 30 post-weaning), growing diet (d 30~90 postweaning) and finishing diet (d 90~160 postweaning) according to their physiological stage. At d 160 postweaning, four pigs each group were selected to be slaughtered for collection of colonic tissues and DNA microarray was applied to the colonic tissues for analysis of gene expression.
Project description:In Poland, conducted for years porcine breeding works focused on improving meat content in the carcass without undertaken to accomplish the more effectiveness of fattening indicators that impact on feed efficiency. At present, feeding and feed conversion became important factors that are especially evident in the countries where the production of fattening pigs is conducted in large farms. In the present study, was attempted to indicate pituitary candidate genes depending on feed conversion ratio (FCR) in native Polish pig breed, Złotnicka White. The whole pituitary transcriptome was sequenced using next-generation sequencing technology. The obtained results show the differences in gene expression for pathways associated with hormonal regulation and also with Notch and Wnt signaling. Moreover, it was observed that worse FCR in Złotnicka pigs was associated with a higher fat level in a carcass and a significant higher level of prolactin expression in the pituitary.
Project description:Transcriptional profiling in subcutaneous adipose tissue of 24 pigs of 115 kg body weight from lines divergently selected for residual feed intake (RFI): low-RFI pigs (RFIneg), high-RFI pigs (RFIpl) and high-RFI pigs restricted at RFIneg feeding level (RFIplR) to investigate the impact of feeding independently of selection. Three conditions experiment: low-RFI (RFIneg), high-RFI (RFIpl) and restricted high-RFI (RFIplR). 8 pigs per condition. One replicate per array.
Project description:The aim of this study was to investigate whether long term intake of pea fiber would improve colonic barrier, bacterial profile and alter colonic gene expression using DNA microarray. Fifty weaned pigs were randomly allocated into 2 groups receiving control and fibrous diet with inclusion of pea fiber from weaning age until d 160. The two diets had similar nutrient levels. Pigs fed pea fiber diet (PF diet) had markedly decreased overall average daily feed intake (ADFI) and Feed:Gain in growing and finishing period (P<0.05). In addition, long term intake of PF diet induced deeper crypt (+50 %, P<0.05), increased protein expression of colonic mucin and sIgA (+13~16 %, P<0.05). Resulting from the increased lactobacillus content (P<0.05), moreover, pigs fed PF diet had significantly higher concentration of colonic total short chain fatty acid (SCFA) and acetic acid. DNA microarray results indicated that feeding PF diet induced alterations in the expression of colonic cancer, immune response and lipid metabolism-related genes, as well as genes involved in signal pathway such as intestinal immune network for IgA production, PPAR signaling pathway and nutrient metabolism-related pathways. Collectively, our results suggested that long term intake of PF diet would improve colonic health via altering colonic bacteria profile, colonic barriers, immune and metabolism related protein or gene expressions.
Project description:Shochu distilled water (SDW) was used as a feedstuff for livestock. We have tried to evaluate the physiology of pig during feeding SDW using genomics. 8-9 month old clawn miniature pigs were fed standard dry feed or SDW feeding. SDW feeding composed of standard dry feed: water: SDW= 1:1:1 by the weight ratio.Whole blood gene expression in control and SDW animal was measured at 12 weeks of feeding periods.
Project description:Miniature pig is a useful animal model to clarify the vital reaction and the molecular mechanisms. However, physiclogical response of pig model to sodium azide (AZIDE) stress is not reveal. To establishment of large animal model for evaluate toxic stress, whole blood of miniature pig were assessed with genomics. 7 month old clawn miniature pigs were fed AZIDE feeding. AZIDE dose of 300µg/kg, one hundredth of LD50 was given orally to the miniature pigs. Whole blood gene expression was measured at 0h, 6h and 24h after feeding.