The effect of microbial challenge on the intestinal proteome of broiler chickens

O'Reilly, Emily; Burchmore, Richard; Eckersall, P.D.; Sparks, Nick H.

doi:10.3920/978-90-8686-776-9_38

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…This could be related to the fact that treatments normalised the moisture in the different bedding materials, allowing the litter microbiota to be kept under control. These findings also agree with the non-significant differences found regarding the intestinal traits and the productive parameters at the end of the rearing period, which are suggestive of inexistence of an environmental bacterial challenge (O'Reilly et al, 2013).…”

Section: Discussionsupporting

confidence: 81%

Effect of litter treatment on growth performance, intestinal development, and selected cecum microbiota in broiler chickens

et al. 2016

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-The objective of this study was to determine whether the type of bedding materials (sand, wood shavings, and paper) and of two chemical amendments (lime and bentonite) could interfere with litter quality (moisture, pH, and total bacterial counts), thereby influencing also the growth performance and the development of intestinal traits and cecum microbiota of chickens. Two hundred and seventy male Ross 308 broiler chickens were randomly assigned into nine treatment groups with three replicates per treatment. Broiler productive parameters, relative weight of different intestinal segments, content of cecal total bacterial counts (total aerobic bacteria, Lactobacilli, and coliforms), as well as litter moisture, pH, and total aerobic bacteria and coliforms counts, were assessed. Litter material, per se, did not significantly affect the productivity parameters at the end of the experimental period (42 days) with the exception of protein efficiency. A significant trend was found among treatments with regard to weight gain and feed intake, with lower performance in birds on sand beddings. Litter pH was relatively homogenous between bedding types and amendments, but the moisture was significantly lower when sand was used. Litter type did not influence the relative weight of the different intestinal segments; however, the type of amendment affected the relative jejunum weight, which was increased in bentonite-treated litter. The use of lime and bentonite treatments may be helpful to decrease the differences in litter moisture associated with particular bedding materials. The tested amendments do not interfere with the productive performance of birds.

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Section: Discussionsupporting

confidence: 81%

Effect of litter treatment on growth performance, intestinal development, and selected cecum microbiota in broiler chickens

et al. 2016

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“…For AGP, the changes over time were not as variable as the other APP, a significant difference only observed between days 17 and 20 in the modern line ( P = <0.05). Previous work suggests that there is a normal increase in AGP concentration over the early period of growth with significant increases over time between days 12 and 22 (O’Reilly, 2013 ), though studies focusing on AGP between 3 and 7 wk of age found AGP not to be affected age (Inoue et al, 1997 ).…”

Section: Resultsmentioning

confidence: 99%

A comparative study of acute-phase protein concentrations in historical and modern broiler breeding lines

2018

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Acute-phase proteins (APP) are secreted from the liver as a result of inflammation or infection and are measurable in serum and plasma. To determine whether the constitutive APP serum amyloid A (SAA), alpha-1-acid glycoprotein (AGP), ceruloplasmin (Cp), and ovotransferrin (Ovt) have changed as a result of selection for improved production and growth characteristics over the last 40 yr two historical broilers lines were compared to a modern line of the same lineage. Serum was harvested from blood samples taken from the 3 broiler lines on days 10, 17, and 20, and the APP concentrations were determined using immunoassay methods. Most of the significant changes observed were age related, with SAA and Cp having significantly lower concentrations at day 20 than days 10 and 17 in all lines. The only significant difference between lines was observed at day 20 on which both Cp (P = 0.01) and AGP (P = 0.03) were significantly higher in the modern line than the 90s line, though no significant differences were noted between the modern and 70s line. When evaluating the difference in APP concentrations between males (Cx) and females (Px) across all 3 lines, females had a higher SAA at day 17 and lower SAA at day 20, P = 0.0078 and 0.0327 respectively, and males had a significantly higher Ovt on days 17 and 20 (P = 0.0002 and P = 0.003 respectively). These results reveal that APP concentrations fluctuate over this early period of growth and that the changes in APP serum concentration appear uniform between 3 lines with very contrasting selection history, suggesting the improvements made in meat production efficiency since the 1970s have not affected the circulating concentrations of these constitutively expressed APP.

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The effect of microbial challenge on the intestinal proteome of broiler chickens

Cited by 2 publications

References 22 publications

Effect of litter treatment on growth performance, intestinal development, and selected cecum microbiota in broiler chickens

Effect of litter treatment on growth performance, intestinal development, and selected cecum microbiota in broiler chickens

A comparative study of acute-phase protein concentrations in historical and modern broiler breeding lines

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