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4 results for “Excreta”
Phyloseq 16S v3v4 object accompanying paper: Host genotype affects endotoxin release in excreta of broilers at slaughter age
<p>This ready to load <strong>phyloseq</strong> R S4 object contains the ASV table, taxonomy table and sample metadata. This data was build using the DaDa2 (version 1.18.0) and phyloseq (version 1.34.0) R packages using the SILVA 138.1 nr99 database and raw MiSeq PE300 sequencing data deposited at NCBI-SRA under BioProject: PRJNA975731.</p> <p>F. Marcato, J.M.J. Rebel, S.K. Kar, I. Wouters, D. Schokker, A. Bossers, F. Harders, J.W. van Riel, M. Wolthuis-Fillerup and I.C. de Jong. </p> <p>The main goal of the current study was to investigate whether or not it was possible to modulate the fecal microbiome and thereby reducing endotoxin concentrations in the excreta of broiler chickens. An experiment was carried out with a 2 x 2 x 2 factorial arrangement including 3 factors, 1) genetic strain (fast-growing Ross 308 vs. slower-growing Hubbard JA757), 2) no vs. combined use of probiotics and prebiotics in the diet and drinking water, 3) early feeding at the hatchery vs. non early feeding. A total of 624 Ross 308 and 624 Hubbard JA757 day-old male broiler chickens were included until d 37 and d 51 of age, respectively. Broilers (26 chicks per pen) were housed in a total of 48 pens, and there were 6 replicate pens/treatment group. Pooled cloacal swabs (10 chickens per pen) for microbiome and endotoxin analyses were collected at a target body weight (BW) of 200 g, 1 kg and 2.5 kg.</p>
Data from: A re-evaluation of the chemical composition of avian urinary excreta
Osmoregulation in birds is complicated, with different organs acting concurrently to regulate this physiological process. Of particular interest is how the urinary excretions of birds can remove excess nitrogen while minimizing the need for dietary water and balancing the physiological demands of oviparity. It has long been concluded from chemical analyses, and more recently from genetic studies, that uric acid is the principal constituent of urine in Aves. However, research has also demonstrated that waste material may be modified in the ceca immediately prior to it being expelled. Here, we quantify the chemical composition of the urine component of excreta of six avian species using X-ray diffraction techniques to test the hypothesis that it is principally composed of uric acid, as commonly reported. None of the analyzed samples were found to contain uric acid. Instead, a variety of compounds including ammonium urate, struvite (magnesium ammonium phosphate), and two unknown compounds, were found. Our results show that the uric acid pathway is indeed the system by which nitrogen is removed in these birds, but that additional modification occurs in the urine prior to excretion. These results raise questions for future research on the urinary excretions of birds, including identification of the unknown compounds found in the present study.
Figura 1 in Atracción de Omorgus (Omorgus) suberosus (Fabricius, 1775) (Coleoptera: Trogidae) a excretas de mamíferos carnívoros
Figura 1. Distribución estacional de Omorgus (Omorgus) suberosus (Fabricius) atraÍda a excretas de dos especies de mamÍferos carnÍvoros en un fragmento de selva subperennifolia de la Reserva El Zapotal, Chiapas, México. / Seasonal distribution of Omorgus (Omorgus) suberosus (Fabricius) attracted to feces of two species of carnivorous mammals in a fragment of sub-evergreen forest in El Zapotal Reserve, Chiapas, Mexico.
Data from: A re-evaluation of the chemical composition of avian urinary excreta
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