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Researcher
Marcus Clauss
Profile
Projects
Publications & Research Data
Activities
Awards & Distinctions
Patents
116
Results
2025
Berry-binging in Scandinavian brown bears : protein intake considerations based on literature
Annelies De Cuyper
Marcus Clauss
Geert Janssens
C3
Conference
2025
How absolute biomass intake can alter nutrient profile interpretation in free‐ranging species : the case of protein intake in brown bears
Annelies De Cuyper
Geert Janssens
Marcus Clauss
A1
Journal Article
in
WILDLIFE BIOLOGY
2025
On the function and origin of the avian renal portal shunt and its potential significance throughout evolution
Kobe Buyse
Koen Stein
Ward De Spiegelaere
Pieter Cornillie
Marcus Clauss
Geert Janssens
A1
Journal Article
in
BIOLOGICAL REVIEWS
2025
Raw diets, not a simple concept : protein quality and microbiome activity for felids
Mengmeng Sun
Geert Janssens
Marcus Clauss
Annelies De Cuyper
Dissertation
2025
2024
A comparison of the dietary nutrient profile of southern Apennine brown bears versus northern Swedish conspecifics
Annelies De Cuyper
Marcus Clauss
Geert Janssens
C3
Conference
2024
Do ingredient and nutrient intake reveal individual dietary specialization in an omnivorous carnivore, the brown bear?
Annelies De Cuyper
Diederik Strubbe
Marcus Clauss
Luc Lens
Andreas Zedrosser
Sam M. J. G. Steyaert
Alexander Kopatz
Geert Janssens
A1
Journal Article
in
WILDLIFE BIOLOGY
2024
2023
Fasted and furious? Considerations on the use of fasting days in large carnivore husbandry
Cellina Kleinlugtenbelt
Marcus Clauss
Anita Burkevica
Annelies De Cuyper
A2
Journal Article
in
JOURNAL OF ZOO AND AQUARIUM RESEARCH
2023
Ingredient vs nutrient intake in free-ranging European brown bears (Ursus arctos)
Annelies De Cuyper
Diederik Strubbe
Marcus Clauss
Luc Lens
Andreas Zedrosser
Sam Steyaert
Leen Verbist
Geert Janssens
C3
Conference
2023
2022
Digestion of bamboo compared to grass and lucerne in a small hindgut fermenting herbivore, the guinea pig (Cavia porcellus)
Annelies De Cuyper
Daniela E. Winkler
Thomas Tuetken
Guido Bosch
Juergen Hummel
Michael Kreuzer
Arturo Muñoz Saravia
Geert Janssens
Marcus Clauss
A1
Journal Article
in
JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL AND INTEGRATIVE
2022
2020
The uneven weight distribution between predators and prey : comparing gut fill between terrestrial herbivores and carnivores
Annelies De Cuyper
Carlo Meloro
Andrew J. Abraham
Dennis W.H. Müller
Daryl Codron
Geert Janssens
Marcus Clauss
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2020
2017
Digestive separation mechanisms in two carnivorous species : the cheetah (Acinonyx jubatus) and the domesticated dog (Canis familiaris)
Annelies De Cuyper
Myriam Hesta
Marcus Clauss
Dhana Leemans
Geert Janssens
C3
Conference
2017
2015
Animal fibre : a key nutrient to carnivoers, but how to determine this dietary fraction analytically
An Cools
Annelies De Cuyper
Jana Pauwels
Geert Janssens
C3
Conference
2015
Do feeding strategies differ between large and small wild carnivores?
Annelies De Cuyper
Myriam Hesta
Marcus Clauss
Geert Janssens
C3
Conference
2015
Feeding strategies in wild carnivores : progress report of a model approach
Annelies De Cuyper
Marcus Clauss
Myriam Hesta
Geert Janssens
C1
Conference
2015
2014
A disparate trace element metabolism in zebu (Bos indicus) and crossbred (Bos indicus × Bos taurus) cattle in response to a copper-deficient diet
Veronique Dermauw
Annelies De Cuyper
Luc Duchateau
Assen Waseyehon
Ellen Dierenfeld
Marcus Clauss
Iain R Peters
Gijs Du Laing
Geert Janssens
A1
Journal Article
in
JOURNAL OF ANIMAL SCIENCE
2014
Trace element distribution in selected edible tissues of zebu (Bos indicus) cattle slaughtered at Jimma, SW Ethiopia
Veronique Dermauw
Marta Lopéz Alonso
Luc Duchateau
Gijs Du Laing
Tadele Tolosa Fulasa
Ellen Dierenfeld
Marcus Clauss
Geert Janssens
A1
Journal Article
in
PLOS ONE
2014
2012
Use of deferiprone for the treatment of hepatic iron storage disease in three hornbills
Peter Sandmeier
Marcus Clauss
Olivio F Donati
Koen Chiers
Ellen Kienzle
Jean-Michel Hatt
A1
Journal Article
in
JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION
2012
2011
Salivary amino acid concentrations in zebus (Bos indicus) and zebu hybrids (Bos indicus × Bos taurus) fed a tannin-rich diet
Kechero Yisehak
Anne Becker
Duguma Belay
Guido Bosch
Wouter H Hendriks
Marcus Clauss
Geert Janssens
A1
Journal Article
in
BELGIAN JOURNAL OF ZOOLOGY
2011
2009
Allometry of visceral organs in living amniotes and its implications for sauropod dinosaurs
Ragna Franz
Jürgen Hummel
Ellen Kienzle
Petra Kölle
Hanns-Christian Gunga
Marcus Clauss
A1
Journal Article
in
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
2009
Changes in body weight, hematology and serum chemistry in captive plains viscachas (Lagostomus maximus) with presumptive diabetes type II after a diet change
CJ Wenker
Marcus Clauss
Dorothea Besselmann
WJ Streich
H Lutz
A1
Journal Article
in
SCHWEIZER ARCHIV FUR TIERHEILKUNDE
2009
More efficient mastication allows increasing intake without compromising digestibility or necessitating a larger gut: Comparative feeding trials in banteng (Bos javanicus) and pygmy hippopotamus (Hexaprotodon liberiensis)
Angela Schwarm
Sylvia Ortmann
Christian Wolf
W. Jürgen Streich
Marcus Clauss
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2009
No easy solution for the fractionation of faecal nitrogen in captive wild herbivores: results of a pilot study
A Schwarm
M Schweigert
S Ortmann
J Hummel
Geert Janssens
WJ Streich
Marcus Clauss
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2009
Non-invasive measurement of faecal glucocorticoid metabolites in Upland Geese Chloephaga picta
Martina Koch
Erich Möstl
Hanspeter W. Steinmetz
Marcus Clauss
Juan F Masello
Petra Quillfeldt
A1
Journal Article
in
POLAR BIOLOGY
2009
Physical characteristics of reticuloruminal contents of oxen in relation to forage type and time after feeding
Jürgen Hummel
Karl-Heinz Südekum
D Bayer
Sylvia Ortmann
W Jürgen Streich
Jean-Michel Hatt
Marcus Clauss
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2009
Physical characteristics of rumen contents in four large ruminants of different feeding type, the addax (Addax nasomaculatus), bison (Bison bison), red deer (Cervus elaphus) and moose (Alces alces)
Marcus Clauss
Julia Fritz
Dorothee Bayer
Kaarlo Nygren
Sven Hammer
Jean-Michel Hatt
Karl-Heinz Südekum
Jürgen Hummel
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2009
Physical characteristics of rumen contents in two small ruminants of different feeding type, the mouflon (Ovis ammon musimon) and the roe deer (Capreolus capreolus)
Marcus Clauss
Julia Fritz
Dorothee Bayer
Jürgen Hummel
W Jürgen Streich
Karl-Heinz Südekum
Jean-Michel Hatt
A1
Journal Article
in
ZOOLOGY
2009
Polyunsaturated fatty acid content in adipose tissue in foregut and hindgut fermenting mammalian herbivores: a literature survey
Marcus Clauss
Christine Grum
Jean-Michel Hatt
A1
Journal Article
in
MAMMALIAN BIOLOGY
2009
2008
An isthmus at the caecocolical junction is an anatomical feature of domestic and wild equids
Marcus Clauss
Jürgen Hummel
Angela Schwarm
Patrick Steuer
Julia Fritz
Olga Martin Jurado
Anja Tschudin
Jean-Michel Hatt
A1
Journal Article
in
EUROPEAN JOURNAL OF WILDLIFE RESEARCH
2008
Comparative digestion studies in wild suids at Rotterdam Zoo
Marcus Clauss
Joeke Nijboer
Jochem HM Loermans
Thomas Roth
Jan Van der Kuilen
Anton C Beynen
A1
Journal Article
in
ZOO BIOLOGY
2008
Convergent evolution in feeding types: salivary gland mass differences in wild ruminant species
Reinold R Hofmann
W Jürgen Streich
Joerns Fickel
Jürgen Hummel
Marcus Clauss
A1
Journal Article
in
JOURNAL OF MORPHOLOGY
2008
Differences in fecal particle size between free-ranging and captive individuals of two browser species
Jürgen Hummel
Julia Fritz
Ellen Kienzle
E Patricia Medici
Stefanie Lang
Waltraut Zimmermann
W Jürgen Streich
Marcus Clauss
A1
Journal Article
in
ZOO BIOLOGY
2008
Excretion patterns of fluid and different sized particle passage markers in banteng (Bos javanicus) and pygmy hippopotamus (Hexaprotodon liberiensis): two functionally different foregut fermenters
Angela Schwarm
Sylvia Ortmann
Christian Wolf
W Jürgen Streich
Marcus Clauss
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2008
Fatty acid status in captive and free-ranging black rhinoceroses (Diceros bicornis)
Marcus Clauss
Ellen S Dierenfeld
KE Bigley
Y Wang
K Ghebremeskel
Jean-Michel Hatt
EJ Flach
O Behlert
JC Castell
WJ Streich
et al.
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2008
Fluid and particle retention in the digestive tract of the addax antelope (Addax nasomaculatus): adaptations of a grazing desert ruminant
Jürgen Hummel
Patrick Steuer
Karl-Heinz Südekum
Sven Hammer
Catrin Hammer
W Jürgen Streich
Marcus Clauss
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2008
Functional differentiation of African grazing ruminants: an example of specialized adaptations to very small changes in diet
Daryl Codron
James S Brink
Lloyd Rossouw
Marcus Clauss
Jacqui Codron
Julia A Lee-Thorp
Matt Sponheimer
A1
Journal Article
in
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
2008
Higher masseter muscle mass in grazing than in browsing ruminants
Marcus Clauss
Reinold R Hofmann
W Jürgen Streich
Joerns Fickel
Jürgen Hummel
A1
Journal Article
in
OECOLOGIA
2008
Hyperthyroidism in connection with suspected diabetes mellitus in a chinchilla (Chinchilla laniger)
R Fritsche
S Simova-Curd
Marcus Clauss
Jean-Michel Hatt
A1
Journal Article
in
VETERINARY RECORD
2008
In vitro digestibility of fern and gymnosperm foliage: implications for sauropod feeding ecology and diet selection
Jürgen Hummel
Carole T Gee
Karl-Heinz Südekum
P Martin Sander
Gunther Nogge
Marcus Clauss
A1
Journal Article
in
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
2008
Investigations on the stratification of forestomach contents in ruminants: an ultrasonographic approach
Andreas Tshuor
Marcus Clauss
A1
Journal Article
in
EUROPEAN JOURNAL OF WILDLIFE RESEARCH
2008
Irregular tooth wear and longevity in captive wild ruminants : a pilot survey of necropsy reports
Olga Martin Jurado
Marcus Clauss
W Jürgen Streich
Jean-Michel Hatt
A1
Journal Article
in
JOURNAL OF ZOO AND WILDLIFE MEDICINE
2008
Juvenile mortality in captive lesser kudu (Tragelaphus imberbis) at Basle Zoo and its relation to nutrition and husbandry
Dorothea Besselmann
Daniela Schaub
Christian Wenker
Jürg Völlm
Nadia Robert
Claude Schelling
Hanspeter Steinmetz
Marcus Clauss
A1
Journal Article
in
JOURNAL OF ZOO AND WILDLIFE MEDICINE
2008
Mammalian metabolic rate scaling to 2/3 or 3/4 depends on the presence of gut contents
Marcus Clauss
Jürgen Hummel
W Jürgen W. Streich
Karl-Heinz Südekum
A1
Journal Article
in
EVOLUTIONARY ECOLOGY RESEARCH
2008
Megaherbivores as pacemakers of carnivore diversity and biomass : distributing or sinking trophic energy?
Jürgen Hummel
Marcus Clauss
A1
Journal Article
in
EVOLUTIONARY ECOLOGY RESEARCH
2008
Modelling digestive constraints in non-ruminant and ruminant foregut-fermenting mammals
Adam J Munn
W Jürgen Streich
Jürgen Hummel
Marcus Clauss
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2008
Observations on the macroscopic anatomy of the intestinal tract and its mesenteric folds in the pampas deer (Ozotoceros bezoarticus, Linnaeus 1758)
W Perez
Marcus Clauss
R Ungerfeld
A1
Journal Article
in
ANATOMIA HISTOLOGIA EMBRYOLOGIA
2008
Quantification of enterobacteriaceae in faeces of captive black rhinoceros (Diceros bicornis) in relation to dietary tannin supplementation
Marcus Clauss
MM Wittenbrink
JC Castell
Ellen Kienzle
Ellen S Dierenfeld
EJ Flach
SK Macgregor
T Hoppe
Jürgen Hummel
W Jürgen Streich
et al.
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2008
Sauropod gigantism
P Martin Sander
Marcus Clauss
Editorial material
2008
Significance of coprophagy for the fatty acid profile in body tissues of rabbits fed different diets
Florian Leiber
Janina S Meier
Bettina Burger
Hans-Rudolf Wettstein
Michael Kreuzer
Jean-Michel Hatt
Marcus Clauss
A1
Journal Article
in
LIPIDS
2008
The evolution of ecological specialization in southern African ungulates: competition- or physical environmental turnover?
Daryl Codron
James S Brink
Lloyd Rossouw
Marcus Clauss
A1
Journal Article
in
OIKOS
2008
The influence of natural diet composition, food intake level, and body size on ingesta passage in primates
Marcus Clauss
W Jürgen Streich
Charles L Nunn
Sylvia Ortmann
Gottfried Hohmann
Angela Schwarm
Jürgen Hummel
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2008
2007
A case of non-scaling in mammalian physiology?: body size, digestive capacity, food intake, and ingesta passage in mammalian herbivores
Marcus Clauss
Angela Schwarm
Sylvia Ortmann
W Jürgen Streich
Jürgen Hummel
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2007
Demonstrating coprophagy with passage markers?: the example of the plains viscacha (Lagostomus maximus)
Marcus Clauss
Dorothea Besselmann
Angela Schwarm
Sylvia Ortmann
Jean-Michel Hatt
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2007
Effect of captivity and mineral supplementation on body composition and mineral status of mustached bats (Pteronotus parnellii rubiginosus)
Marcus Clauss
U Firzlaff
JC Castell
B Kiefer
W Jürgen Streich
A Liesegang
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2007
Mineral absorption in the black rhinoceros (Diceros bicornis) as compared with the domestic horse
Marcus Clauss
JC Castell
E Kienzle
P Schramel
ES Dierenfeld
EJ Flach
O Behlert
W Jürgen Streich
Jürgen Hummel
Jean-Michel Hatt
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2007
Observations on the length of the intestinal tract of African Loxodonta africana (Blumenbach 1797) and Asian elephants Elephas maximus (Linne 1735)
Marcus Clauss
Hanspeter Steinmetz
Ulrike Eulenberger
Pete Ossent
Robert Zingg
Jürgen Hummel
Jean-Michel Hatt
A1
Journal Article
in
EUROPEAN JOURNAL OF WILDLIFE RESEARCH
2007
Recurrent tongue tip constriction in a captive giant anteater (Myrmecophaga tridactyla)
Hanspeter W Steinmetz
Marcus Clauss
Karsten Feige
Tanja Thio
Ewald Isenbugel
Jean-Michel Hatt
A1
Journal Article
in
JOURNAL OF ZOO AND WILDLIFE MEDICINE
2007
The influence of dietary tannin supplementation on digestive performance in captive black rhinoceros (Diceros bicornis)
Marcus Clauss
Johanna Castell
Ellen Kienzle
Ellen Dierenfeld
EJ Flach
O Behlert
Sylvia Ortmann
W Jürgen Streich
Jürgen Hummel
Jean-Michel Hatt
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2007
The relationship of food intake and ingesta passage predicts feeding ecology in two different megaherbivore groups
Marcus Clauss
W Jürgen Streich
Angela Schwarm
Sylvia Ortmann
Jürgen Hummel
A1
Journal Article
in
OIKOS
2007
Tooth wear in captive giraffes (Giraffa camelopardalis) : mesowear analysis classifies free-ranging specimens as browsers but captive ones as grazers
Marcus Clauss
Tamara A Franz-Odendaal
Julliane Brasch
Johanna C Castell
Thomas Kaiser
A1
Journal Article
in
JOURNAL OF ZOO AND WILDLIFE MEDICINE
2007
2006
A high roughage/concentrate ratio decreases the effect of ammonium chloride on acid-base balance in horses
Ellen Kienzle
Klaus Stürmer
Dietmar Ranz
Marcus Clauss
A1
Journal Article
in
JOURNAL OF NUTRITION
2006
Antioxidant status of faeces of captive black rhinoceros (Diceros bicornis) in relation to dietary tannin supplementation
Marcus Clauss
N Pellegrini
Johanna Castell
Ellen Kienzle
Ellen Dierenfeld
Jürgen Hummel
EJ Flach
W Jürgen Streich
Jean-Michel Hatt
A1
Journal Article
in
JOURNAL OF VETERINARY MEDICINE SERIES A-PHYSIOLOGY PATHOLOGY CLINICAL MEDICINE
2006
Biochemische Serumparameter bei in Gefangenschaft gehaltenen Gazellen
S Hammer
C Hammer
J Schulz
U Wernery
Marcus Clauss
A1
Journal Article
in
TIERAERZTLICHE PRAXIS AUSGABE GROSSTIERE NUTZTIERE
2006
Breed predisposition for BSE : epidemiological evidence in Bavarian cattle
C Sauter-Louis
Marcus Clauss
E Chaher
W Klee
HE Wichmann
Ellen Kienzle
A1
Journal Article
in
SCHWEIZER ARCHIV FUR TIERHEILKUNDE
2006
Chemical composition of turtles and tortoises
Ellen Kienzle
Geraldiine Kopsch
Petra Koelle
Marcus Clauss
A1
Journal Article
in
JOURNAL OF NUTRITION
2006
Collection of exhaled breath and exhaled breath condensate in veterinary medicine: a review
E Zollinger
Marcus Clauss
HW Steinmetz
Jean-Michel Hatt
A1
Journal Article
in
VETERINARY QUARTERLY
2006
Differences in bone mineral content and density between male and female budgerigars (Melopsittacus undulatus) during the non-reproductive season
I Zulauf-Fischer
A Liesegang
M Haessig
Marcus Clauss
A1
Journal Article
in
JOURNAL OF VETERINARY MEDICINE SERIES A-PHYSIOLOGY PATHOLOGY CLINICAL MEDICINE
2006
Digestion coefficients achieved by the black rhinoceros (Diceros bicornis), a large browsing hindgut fermenter
Marcus Clauss
JC Castell
Ellen Kienzle
ES Dierenfeld
EJ Flach
O Behlert
S Ortmann
W Jürgen Streich
Jürgen Hummel
Jean-Michel Hatt
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2006
Digestion studies in captive Hippopotamidae: a group of large ungulates with an unusually low metabolic rate
A Schwarm
S Ortmann
H Hofer
W Jürgen Streich
EJ Flach
R Kuehne
Jürgen Hummel
JC Castell
Marcus Clauss
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2006
Effect of diet on the feces quality in Javan langur (Trachypithecus auratus auratus)
Joeke Nijboer
Marcus Clauss
Moniek Olsthoorn
Wendy Noordermeer
Tjalling R Huisman
Celine Verheyen
Jan van der Kuilen
Jürgen Streich
Anton C Beynen
A1
Journal Article
in
JOURNAL OF ZOO AND WILDLIFE MEDICINE
2006
Energy supply of the okapi in captivity : fermentation characteristics of feedstuffs
Jürgen Hummel
Gunther Nogge
Marcus Clauss
Camilla Norgaard
Kristina Johanson
Joeke Nijboer
Ernst Pfeffer
A1
Journal Article
in
ZOO BIOLOGY
2006
Energy supply of the okapi in captivity: intake and digestion trials
Jürgen Hummel
Ernst Pfeffer
Camilla Norgaard
Kristina Johanson
Marcus Clauss
Gunther Nogge
A1
Journal Article
in
ZOO BIOLOGY
2006
Forage fermentation patterns and their implications for herbivore ingesta retention times
Jürgen Hummel
K-H Südekum
W Jürgen Streich
Marcus Clauss
A1
Journal Article
in
FUNCTIONAL ECOLOGY
2006
Investigations of the potential risk factors associated with cases of bovine spongiform encephalopathy in Bavaria, Germany
Marcus Clauss
C Sauter-Louis
E Chaher
C Pottgiesser
S Goebel
T Selhorst
HE Wichmann
W Klee
Ellen Kienzle
A1
Journal Article
in
VETERINARY RECORD
2006
Macromineral absorption in the black rhinoceros (Diceros bicornis) compared with the domestic horse
Marcus Clauss
Johanna C Castell
Ellen Kienzle
Peter Schramel
Ellen S Dierenfeld
Edmund J Flach
Olaf Behlert
Jean-Michel Hatt
W Jürgen Streich
Jürgen Hummel
A1
Journal Article
in
JOURNAL OF NUTRITION
2006
Macroscopic anatomy of the omasum of free-ranging moose (Alces alces) and muskoxen (Ovibos moschatus) and a comparison of the omasal laminal surface area in 34 ruminant species
Marcus Clauss
RR Hofmann
Jürgen Hummel
J Adamczewski
K Nygren
C Pitra
W Jürgen Streich
S Reese
A1
Journal Article
in
JOURNAL OF ZOOLOGY
2006
Potential risk factors for BSE: reply
Marcus Clauss
C Sauter-Louis
A1
Journal Article
in
VETERINARY RECORD
2006
The dissociation of the fluid and particle phase in the forestomach as a physiological characteristic of large grazing ruminants: an evaluation of available, comparable ruminant passage data
Marcus Clauss
Jürgen Hummel
W Jürgen Streich
A1
Journal Article
in
EUROPEAN JOURNAL OF WILDLIFE RESEARCH
2006
2005
Energy and fibre intake in a group of captive giraffe (Giraffa camelopardalis) offered increasing amounts of browse
Jean-Michel Hatt
D Schaub
M Wanner
H-R Wettstein
EJ Flach
C Tack
M Hässig
Sylvia Ortmann
Jürgen Hummel
Marcus Clauss
A1
Journal Article
in
JOURNAL OF VETERINARY MEDICINE SERIES A-PHYSIOLOGY PATHOLOGY CLINICAL MEDICINE
2005
Energy and mineral nutrition and water intake in the captive Indian rhinoceros (Rhinoceros unicornis)
Marcus Clauss
Carmen Polster
Ellen Kienzle
Henning Wiesner
Katrin Baumgartner
Friedericke von Houwald
W Jürgen Streich
Ellen Dierenfeld
A1
Journal Article
in
ZOO BIOLOGY
2005
Fiber digestibility in juvenile Galapagos tortoises (Geochelone nigra) and implications for the development of captive animals
Jean-Michel Hatt
Marcus Clauss
Ricarda Gisler
Annette Liesegang
Marcel Wanner
A1
Journal Article
in
ZOO BIOLOGY
2005
Fluid and particle retention in captive okapi (Okapia johnstoni)
Jürgen Hummel
Marcus Clauss
Waltraut Zimmermann
Kristina Johanson
Camilla Nørgaard
Ernst Pfeffer
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2005
Fluid and particle retention times in the black rhinoceros Diceros bicornis, a large hindgut-fermenting browser
Marcus Clauss
T Froeschle
Johanna Castell
Jürgen Hummel
Jean-Michel Hatt
Sylvia Ortmann
W Jürgen Streich
A1
Journal Article
in
ACTA THERIOLOGICA
2005
Mineral concentrations in serum/plasma and liver tissue of captive and free-ranging rhinoceros species
Ellen S Dierenfeld
Shirley Atkinson
A Morrie Craig
Karen C Walker
W Jürgen Streich
Marcus Clauss
A1
Journal Article
in
ZOO BIOLOGY
2005
Mortality of captive giraffe (Giraffa camelopardalis) associated with serous fat atrophy : a review of five cases at Auckland Zoo
JS Potter
Marcus Clauss
A1
Journal Article
in
JOURNAL OF ZOO AND WILDLIFE MEDICINE
2005
Nutrition of captive lowland anoa (Bubalus depressicornis) : a study on ingesta passage, intake, digestibility, and a diet survey
Kaori Flores-Miyamoto
Marcus Clauss
Sylvia Ortmann
Anthony W Sainsbury
A1
Journal Article
in
ZOO BIOLOGY
2005
Observations on the macroscopic digestive anatomy of the Himalayan tahr (Hemitragus jemlahicus)
Marcus Clauss
J Hummel
F Vercammen
WJ Streich
A1
Journal Article
in
ANATOMIA HISTOLOGIA EMBRYOLOGIA - JOURNAL OF VETERINARY MEDICINE SERIES C
2005
Studies on digestive physiology and feed digestibilities in captive Indian rhinoceros (Rhinoceros unicornis)
Marcus Clauss
C Polster
E Kienzle
H Wiesner
K Baumgartner
F von Houwald
S Ortmann
W Jürgen Streich
Ellen S Dierenfeld
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2005
Tannin-binding salivary proteins in three captive rhinoceros species
Marcus Clauss
Janin Gehrke
Jean-Michel Hatt
Ellen S Dierenfeld
Edmund J Flach
Robert Hermes
Johanna Castell
W Jürgen Streich
Joerns Fickel
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2005
Testing predictions on body mass and gut contents: dissection of an African elephant Loxodonta africana Blumenbach 1797
Marcus Clauss
Nadia Robert
Chris Walzer
Christelle Vitaud
Jürgen Hummel
A1
Journal Article
in
EUROPEAN JOURNAL OF WILDLIFE RESEARCH
2005
The digestive performance of mammalian herbivores: why big may not be that much better
Marcus Clauss
Jürgen Hummel
A1
Journal Article
in
MAMMAL REVIEW
2005
2004
Differences in the range of faecal dry matter content between feeding types of captive wild ruminants
Marcus Clauss
M Lechner-Doll
W Jürgen Streich
A1
Journal Article
in
ACTA THERIOLOGICA
2004
Intake, ingesta retention, particle size distribution and digestibility in the hippopotamidae
Marcus Clauss
A Schwarm
Sylvia Ortmann
D Alber
EJ Flach
R Kuhne
J Hummel
W Jürgen Streich
H Hofer
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
2004
Panda phlebotomies?: the need for comparative screening for haemochromatosis
Chris Wood
Marcus Clauss
Editorial material
2004
Seasonal faecal excretion, gut fill, liquid and particle marker retention in mouflon Ovis ammon musimon, and a comparison with roe deer Capreolus capreolus
A Behrend
M Lechner-Doll
W Jürgen Streich
Marcus Clauss
A1
Journal Article
in
ACTA THERIOLOGICA
2004
Skin lesions in alpacas and llamas with low zinc and copper status: a preliminary report
Marcus Clauss
Christine Lendl
Peter Schramel
W Jürgen Streich
A1
Journal Article
in
VETERINARY JOURNAL
2004
The potential interplay of posture, digestive anatomy, density of ingesta and gravity in mammalian herbivores: why sloths do not rest upside down
Marcus Clauss
A1
Journal Article
in
MAMMAL REVIEW
2004
2003
Captive roe deer (Capreolus capreolus) select for low amounts of tannic acid but not quebracho: fluctuation of preferences and potential benefits
Marcus Clauss
Karin Lason
Janin Gehrke
Matthias Lechner-Doll
Jörns Fickel
Tilman Grune
W Jürgen Streich
A1
Journal Article
in
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
2003
Do cows fed BSE-infected meat and bone meal in the colostrum-producing stage pass on infectious BSE agent to their calves?
Marcus Clauss
A1
Journal Article
in
MEDICAL HYPOTHESES
2003
Increased iron absorption in lemurs: quantitative screening and assessment of dietary prevention
C Wood
SG Fang
A Hunt
W Jürgen Streich
Marcus Clauss
A1
Journal Article
in
AMERICAN JOURNAL OF PRIMATOLOGY
2003
On the cross-contamination of ruminant feedstuffs in Bavaria after the comprehensive feed ban
Marcus Clauss
Ellen Kienzle
A1
Journal Article
in
DEUTSCHE TIERARZTLICHE WOCHENSCHRIFT
2003
Plasma and erythrocyte fatty acids in captive Asian (Elephas maximus) and African (Loxodonta africana) elephants
Marcus Clauss
Y Wang
K Ghebremeskel
CE Lendl
W Jürgen Streich
A1
Journal Article
in
VETERINARY RECORD
2003
Ruminant diversification as an adaptation to the physicomechanical characteristics of forage: a reevaluation of an old debate and a new hypothesis
Marcus Clauss
M Lechner-Doll
W Jürgen Streich
A1
Journal Article
in
OIKOS
2003
Studies on feed digestibilities in captive Asian elephants (Elephas maximus)
Marcus Clauss
W Loehlein
Ellen Kienzle
H Wiesner
A1
Journal Article
in
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
2003
The maximum attainable body size of herbivorous mammals: morphophysiological constraints on foregut, and adaptations of hindgut fermenters
Marcus Clauss
R Frey
B Kiefer
M Lechner-Doll
W Loehlein
C Polster
GE Rössner
W Jürgen Streich
A1
Journal Article
in
OECOLOGIA
2003
2002
Faecal particle size distribution in captive wild ruminants: an approach to the browser/grazer dicotomy from the other end
Marcus Clauss
M Lechner-Doll
W Jürgen Streich
A1
Journal Article
in
OECOLOGIA
2002
Fat soluble vitamins in blood and tissues of free-ranging and captive rhinoceros
Marcus Clauss
David A Jessup
Edward B Norkus
Tai C Chen
Michael F Holick
W Jürgen Streich
Ellen S Dierenfeld
A1
Journal Article
in
JOURNAL OF WILDLIFE DISEASES
2002
Feeding practice in moose (Alces alces) husbandry
Marcus Clauss
Ellen Kienzle
H Wiesner
A1
Journal Article
in
TIERARZTLICHE PRAXIS AUSGABE GROSSTIERE NUTZTIERE
2002
Importance of the wasting syndrome complex in captive moose (Alces alces)
Marcus Clauss
Ellen Kienzle
Henning Wiesner
A1
Journal Article
in
ZOO BIOLOGY
2002
The use of dosed and herbage N-alkanes as markers for the determination of intake, digestibility, mean retention time and diet selection in Galapagos tortoises (Geochelone nigra)
Jean-Michel Hatt
R Gisler
RW Mayes
M Lechner-Doll
Marcus Clauss
A Liesegang
M Wanner
A1
Journal Article
in
HERPETOLOGICAL JOURNAL
2002
2001
Comparative use of four different marker systems for the estimation of digestibility and low food intake in a group of captive giraffes (Giraffa camelopardalis)
Marcus Clauss
Matthias Lechner-Doll
Edmund J Flach
Cliff Tack
Jean-Michel Hatt
A1
Journal Article
in
ZOO BIOLOGY
2001
Differences in selective reticulo-ruminal particle retention as a key factor in ruminant diversification
Marcus Clauss
Matthias Lechner-Doll
A1
Journal Article
in
OECOLOGIA
2001
Feeding browse to large zoo herbivores: how much is 'a lo', how much is 'sufficient'?
Marcus Clauss
E Kienzle
H Wiesner
P1
Conference
2001
Noninvasive monitoring of adrenocortical activity in roe deer (Capreolus capreolus) by measurement of fecal corticol metabolites
M Dehnhard
Marcus Clauss
Matthias Lechner-Doll
HHD Meyer
R Palme
A1
Journal Article
in
GENERAL AND COMPARATIVE ENDOCRINOLOGY
2001
Particle retention in the forestomach of a browsing ruminant, the roe deer Capreolus capreolus
Marcus Clauss
Matthias Lechner-Doll
A Behrend
K Lason
D Lang
W Jürgen Streich
A1
Journal Article
in
ACTA THERIOLOGICA
2001
Use of artificially applied n-alkanes as markers for the estimation of digestibility, food selection and intake in pigeons (Columba livia)
Jean-Michel Hatt
RW Mayes
Marcus Clauss
M Lechner-Doll
A1
Journal Article
in
ANIMAL FEED SCIENCE AND TECHNOLOGY
2001
1999
Susceptibility of yak (Bos grunniens) to copper deficiency
Marcus Clauss
E.S. Dierenfeld
A1
Journal Article
in
Veterinary Record
1999