Search Results - "Sommerfeld, Vera"
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Insights into Broilers' Gut Microbiota Fed with Phosphorus, Calcium, and Phytase Supplemented Diets
Published in Frontiers in microbiology (19-12-2016)“…Phytase supplementation in broiler diets is a common practice to improve phosphorus (P) availability and to reduce P loss by excretion. An enhanced P…”
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Mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals
Published in Poultry science (01-04-2023)“…Female turkeys (B.U.T. 6) and broilers (Ross 308) were compared at 6 wk of age to evaluate the effects of species, dietary P, Ca, and phytase levels on…”
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Comparison of mucosal phosphatase activity, phytate degradation, and nutrient digestibility in 3-week-old turkeys and broilers at different dietary levels of phosphorus and phytase
Published in Poultry science (01-03-2023)“…A comparison between 3-wk-old female turkeys (B.U.T. 6) and broilers (Ross 308) was performed to study the effects of species, dietary P, Ca, and phytase…”
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Immune parameters in two different laying hen strains during five production periods
Published in Poultry science (01-11-2021)“…During life, the number and function of immune cells change with potential consequences for immunocompetence of an organism. In laying hens, studies have…”
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Effect of dietary zinc source, zinc concentration, and exogenous phytase on intestinal phytate degradation products, bone mineralization, and zinc status of broiler chickens
Published in Poultry science (01-12-2023)“…This study aimed to determine the effect of Zn source and dietary level on intestinal myo-inositol hexakisphosphate (InsP6) disappearance, intestinal…”
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Interrelationship of myo-inositol pathways with systemic metabolic conditions in two strains of high-performance laying hens during their productive life span
Published in Scientific reports (25-02-2021)“…Adaptation to metabolic challenges is an individual process in animals and human, most likely based on genetic background. To identify novel pathways of…”
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Research Note: Jejunum phosphatases and systemic myo-inositol in broiler chickens fed without or with supplemented phytase
Published in Poultry science (01-11-2020)“…As a constituent of animal cells, myo-inositol (MI) has been hypothesized to be crucial in several metabolic and regulatory pathways. Recently, it was shown…”
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Effects of feeding diets without mineral P supplement on intestinal phytate degradation, blood concentrations of Ca and P, and excretion of Ca and P in two laying hen strains before and after onset of laying activity
Published in Poultry science (01-12-2024)“…The objective of this study was to characterize intestinal phytate degradation and mineral utilization by 2 laying hen strains before and after the onset of…”
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Phytase dosing affects phytate degradation and Muc2 transporter gene expression in broiler starters
Published in Poultry science (01-02-2020)“…This study was conducted to determine effects of high phytase use on growth performance, amino acid (AA) digestibility, intestinal phytate breakdown, and…”
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Transcriptional responses in jejunum of two layer chicken strains following variations in dietary calcium and phosphorus levels
Published in BMC genomics (29-06-2021)“…Calcium (Ca) and phosphorus (P) are essential nutrients that are linked to a large array of biological processes. Disturbances in Ca and P homeostasis in…”
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Phytate degradation, myo-inositol release, and utilization of phosphorus and calcium by two strains of laying hens in five production periods
Published in Poultry science (01-12-2020)“…The objective of this study was to compare 2 laying hen strains in 5 production periods regarding phytase activity, phytate (InsP6) degradation, and…”
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Jejunal transcriptomic profiling of two layer strains throughout the entire production period
Published in Scientific reports (11-10-2021)“…The jejunum plays crucial roles for the digestion and absorption of nutrients and minerals and for barrier functions that are essential for a healthy,…”
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The dynamics of molecular, immune and physiological features of the host and the gut microbiome, and their interactions before and after onset of laying in two hen strains
Published in Poultry science (01-01-2023)“…Aggregation of data, including deep sequencing of mRNA and miRNA data in jejunum mucosa, abundance of immune cells, metabolites, or hormones in blood,…”
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Dietary phosphorus and calcium in feed affects miRNA profiles and their mRNA targets in jejunum of two strains of laying hens
Published in Scientific reports (29-06-2021)“…Phosphorus (P) and calcium (Ca) are critical for egg production in laying hens. Most of P in plant-based poultry diet is bound as phytic acid and needs to be…”
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Immunomodulatory Effects of Dietary Phosphorus and Calcium in Two Strains of Laying Hens
Published in Animals (Basel) (01-01-2021)“…Insufficient nutrient supply can impair the immune system, which is important for animal health and welfare. Since chicken can partly hydrolyze phytate, which…”
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Insights into the Mitochondrial and Nuclear Genome Diversity of Two High Yielding Strains of Laying Hens
Published in Animals (Basel) (15-03-2021)“…Mitochondria are essential components of eukaryotes as they are involved in several organismic key processes such as energy production, apoptosis and cell…”
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Minimum phosphorus requirements for laying hen feed formulations
Published in Poultry science (01-02-2023)“…The objective of this contribution was to summarize from scientific literature the optimal concentration of nonphytate phosphorus (NPP) in feed for laying…”
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Phytate Degradation, Transcellular Mineral Transporters, and Mineral Utilization by Two Strains of Laying Hens as Affected by Dietary Phosphorus and Calcium
Published in Animals (Basel) (01-10-2020)“…Laying hens require less phosphorus (P) but markedly more calcium (Ca) in their diet than broilers. These differences may cause more distinct interactions with…”
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Multi-Omics Reveals Different Strategies in the Immune and Metabolic Systems of High-Yielding Strains of Laying Hens
Published in Frontiers in genetics (01-04-2022)“…Lohmann Brown (LB) and Lohmann Selected Leghorn (LSL) are two commercially important laying hen strains due to their high egg production and excellent…”
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Effects of calcium level and source, formic acid, and phytase on phytate degradation and the microbiota in the digestive tract of broiler chickens
Published in Animal microbiome (15-03-2021)“…Diet acidification, dietary calcium (Ca) level, and phytase supplementation are known influences on the microbial community in the digestive tract and on…”
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