- Animal Nutrition and Physiology
- Phytase and its Applications
- Ruminant Nutrition and Digestive Physiology
- Aquaculture Nutrition and Growth
- Genetic and phenotypic traits in livestock
- Rabbits: Nutrition, Reproduction, Health
- Livestock and Poultry Management
- Trace Elements in Health
- Meat and Animal Product Quality
- Animal Behavior and Welfare Studies
- Moringa oleifera research and applications
- Aquaculture disease management and microbiota
- Gut microbiota and health
- Reproductive Physiology in Livestock
- Plant Micronutrient Interactions and Effects
- Selenium in Biological Systems
- Agriculture and Biological Studies
- Genetic Syndromes and Imprinting
- Reproductive biology and impacts on aquatic species
- Probiotics and Fermented Foods
- Agriculture Sustainability and Environmental Impact
- Muscle metabolism and nutrition
- Botanical Research and Chemistry
- Genetic Mapping and Diversity in Plants and Animals
- Iron Metabolism and Disorders
University of Hohenheim
2016-2025
Cambridge University Press
2023
New York University Press
2023
Institut für Tier-, Natur- und Umweltethik
1995-2012
Martin Luther University Halle-Wittenberg
2001-2008
University of Bonn
1994-2000
Commonwealth Scientific and Industrial Research Organisation
1999
École Inter-États des Sciences et Médecine Vétérinaires de Dakar
1997
Genotypes of cereal grains, including winter barley (n = 21), maize 27), oats 14), rye 22), triticale 21) and wheat 29), were assayed for their chemical composition physical characteristics as part the collaborative research project referred to GrainUp. one grain species grown on same site, except maize. In general, concentrations proximate nutrients not largely different from feed tables. The coefficient variation (CV) ether extract concentration was high because data pool comprised...
The structure and function of the microbiome inhabiting rumen are, amongst other factors, mainly shaped by animal's feed intake. Describing influence different diets on inherent community arrangement associated metabolic activities most active ruminal fractions (bacteria archaea) is great interest for animal nutrition, biotechnology climatology. Samples were obtained from three fistulated Jersey cows rotationally fed with corn silage, grass silage or hay, each supplemented a concentrate...
The objective was to characterise degradation of myo-inositol 1,2,3,4,5,6-hexakis (dihydrogen phosphate) (InsP6) and formation inositol phosphate (InsP) isomers in different segments the broiler digestive tract. Influence an Aspergillus niger (PhyA) two Escherichia coli-derived (PhyE1 PhyE2) phytases also investigated. A total 600 16-d-old broilers were allocated forty floor pens (ten per treatment). Low-P (5·2 g/kg DM) maize-soyabean meal-based diets fed without (basal diet; BD) or with a...
This study aimed to distinguish between the single and interactive effects of phosphorus (P), calcium (Ca), phytase on products phytate degradation, including disappearance myo-inositol (MI), P, Ca, amino acids (AA) in different segments digestive tract broiler chickens. Additionally, all dephosphorylation steps from 1,2,3,4,5,6-hexakis (dihydrogen phosphate) (InsP6) MI were investigated digesta terminal ileum. Unsexed Ross 308 chickens allocated 56 pens with 19 birds per pen, assigned one 8...
Phytase supplementation in broiler diets is a common practice to improve phosphorus (P) availability and reduce P loss by excretion. An enhanced availability, its concomitant with calcium (Ca), can affect the structure of microbial community digestive tract chickens. Here, we aim distinguish effects mineral P, Ca, phytase on composition communities present content mucosa layer gastrointestinal (GIT) Significant differences were observed between digesta samples for GIT sections studied (p =...
Phytate breakdown in the digestive tract of broilers is affected by supplements mineral phosphorus (P) and phytase with unknown interactions between 2 factors. It was objective to study phytate hydrolysis presence inositol phosphate isomers (InsPs) as P small intestine broilers. Fifteen-day old were assigned 48 pens 20 each (n = 8 pens/treatment). Two low-P corn-soybean meal-based diets without (BD-; 4.4 g P/kg dry matter) or monocalcium (MCP; BD+; 5.2 supplied added at 500 12,500 FTU/kg. On...
The objective of this study was to investigate the effects supplementation with free myo-inositol (MI) or graded levels phytase on inositol phosphate (InsP) degradation, concentrations MI in digestive tract and blood, bone mineralization, prececal digestibility amino acids (AA). Ross 308 broiler hatchlings were allocated 40 pens 11 birds each assigned one 5 treatments. fed a starter diet until d grower from 22. All diets based wheat, soybean meal, corn. Birds control diet, calculated contain...
The chemical composition of 16 microalgae products four genera, Arthrospira (n = 2), Chlorella 8), Nannochloropsis 4) and Phaeodactylum was assayed to evaluate the intra- inter-genera variation nutrient profiles commercial products. Crude protein main component in all followed by ether extract crude ash. Mean concentrations were 690, 502, 431 446 g/kg dry matter, mean 63, 157, 188 113 matter for Arthrospira, Chlorella, respectively. However, there considerable inter- intra-genera variation....
Potential effects of supplemental microbial phytase on digestibility and utilization phosphorus (P) originating from plant materials were studied in trout. Diets mainly based soybean products contained P only materials. Concentration total was suboptimal about 60% bound as phytate P. prepared either without enzyme supplementation or after with an Aspergillus niger (1000 units/kg diet). Apparent determined at a water temperature 15°C. Utilization measured two growth trials temperatures 15...
AbstractOptimising the supply of dietary phosphorus (P) to animals requires sound knowledge regarding availability P from feed raw materials. Different definitions available have been proposed and various approaches are in use determine availability. These differences make it difficult compare published data compile comprehensive feeding tables for industry. This is disadvantageous regard costs sustainable handling limited global phosphate reserves. Working Group No 2 (Nutrition) European...
Molecular fingerprinting and sequencing based techniques have been widely used to characterize microbial communities. Terminal restriction fragment length polymorphism (T-RFLP) 454-pyrosequencing were determine the microorganisms present in different sections of chicken gastrointestinal tract (GIT) (crop, jejunum, ileum caeca). Broilers fed with diets differing phosphorous (P) calcium (Ca) as well phytase levels study microbiota upper lower part GIT. A database terminal fragments (T-RF) most...
The objective of this study was to determine the effects protease origin and dosage on prececal (pc) amino acid (AA) digestibility influence composition microbial community in small intestine. In addition, phytase supplementation were investigated. A total 8 dietary treatments included. basal diet contained mainly corn soybean meal. Three products added diet, each at level recommended by supplier an 8-fold level. Phytase supplemented another treatment. Each treatment allocated replicates 15...
Wheat is of high importance for a healthy and sustainable diet the growing world population, partly due to its mineral content. However, several minerals are bound in phytate complex grain unavailable humans. We performed series trials compare contents phytic acid as well phytase activity varieties from alternative wheat species spelt, emmer einkorn with common wheat. Additionally, we investigated potential recent popular bread making recipes German bakeries reduce content, thus increase...
1. An experiment was conducted to investigate whether a linear regression approach is suitable tool for determining the amino acid (AA) digestibility up terminal ileum of broiler chickens. Solvent-extracted rapeseed meal (RSM) used as model ingredient. 2. Ten diets with 5 different inclusion rates RSM (60, 120, 180, 240 and 300 g/kg, corresponding crude protein concentrations from 170 250 g/kg in diet), each without or supplementation phytase (500 U/kg), were fed ad libitum chickens between...
The responses of broilers to increments dietary P concentration in retention and prececal digestibility were studied 2 experiments using Ross 308 their fourth week age. low-P basal diet was mainly based on corn, potato protein, corn starch. Titanium dioxide used as the indigestible marker. Monobasic calcium phosphate added 6 (experiment 1) or 5 2) graded levels up a maximum 8.1 g P/kg diet. Five replicated pens 10 birds used. Excreta collected from trays underneath pens. Birds asphyxiated by...
Dietary phosphorus (P) is known as a main modulator of phosphate (Pi) transporter expression. The effect supplemented mineral P with or without phytase on protein expression two sodium-dependent Pi (NaPi) transporters and calcium channel was studied in the small intestine broilers. Thirty-six broilers were randomly assigned to six different diets at 15 days age. Two levels total (tP, adjusted by monocalcium (MCP) supplementation), 0.39% (BD-) 0.47% (BD+) fed until day 25; each tP level,...