Hummel, Jürgen

[["dc.bibliographiccitation.journal","Journal of Animal Physiology and Animal Nutrition"],["dc.contributor.author","Martin, Louise F."],["dc.contributor.author","Ackermans, Nicole L."],["dc.contributor.author","Tollefson, Troy N."],["dc.contributor.author","Kircher, Patrick R."],["dc.contributor.author","Richter, Henning"],["dc.contributor.author","Hummel, Jürgen"],["dc.contributor.author","Codron, Daryl"],["dc.contributor.author","Hatt, Jean‐Michel"],["dc.contributor.author","Clauss, Marcus"],["dc.date.accessioned","2021-06-01T09:42:03Z"],["dc.date.available","2021-06-01T09:42:03Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1111/jpn.13565"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/85127"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","1439-0396"],["dc.relation.issn","0931-2439"],["dc.title","Tooth wear, growth and height in rabbits (Oryctolagus cuniculus) fed pelleted or extruded diets with or without added abrasives"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","139"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology"],["dc.bibliographiccitation.lastpage","148"],["dc.bibliographiccitation.volume","331"],["dc.contributor.author","Ackermans, Nicole L."],["dc.contributor.author","Clauss, Marcus"],["dc.contributor.author","Winkler, Daniela E."],["dc.contributor.author","Schulz-Kornas, Ellen"],["dc.contributor.author","Kaiser, Thomas M."],["dc.contributor.author","Müller, Dennis W. H."],["dc.contributor.author","Kircher, Patrick R."],["dc.contributor.author","Hummel, Jürgen"],["dc.contributor.author","Hatt, Jean-Michel"],["dc.date.accessioned","2020-12-10T14:06:47Z"],["dc.date.available","2020-12-10T14:06:47Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1002/jez.v331.2"],["dc.identifier.issn","2471-5638"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70019"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Root growth compensates for molar wear in adult goats ( Capra aegagrus hircus )"],["dc.title.alternative","ACKERMANS\r\n et al."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","104"],["dc.bibliographiccitation.journal","Mammalian Biology"],["dc.bibliographiccitation.lastpage","111"],["dc.bibliographiccitation.volume","97"],["dc.contributor.author","Hatt, Jean-Michel"],["dc.contributor.author","Codron, Daryl"],["dc.contributor.author","Müller, Dennis W.H."],["dc.contributor.author","Ackermans, Nicole L."],["dc.contributor.author","Martin, Louise F."],["dc.contributor.author","Kircher, Patrick R."],["dc.contributor.author","Hummel, Jürgen"],["dc.contributor.author","Clauss, Marcus"],["dc.date.accessioned","2020-12-10T15:20:18Z"],["dc.date.available","2020-12-10T15:20:18Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1016/j.mambio.2019.06.001"],["dc.identifier.issn","1616-5047"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72619"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","The rumen washes off abrasives before heavy-duty chewing in ruminants"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Journal of Animal Physiology and Animal Nutrition"],["dc.contributor.author","Clauss, Marcus"],["dc.contributor.author","Tschuor, Andreas"],["dc.contributor.author","Codron, Daryl"],["dc.contributor.author","Hummel, Jürgen"],["dc.date.accessioned","2021-12-01T09:21:14Z"],["dc.date.available","2021-12-01T09:21:14Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1111/jpn.13663"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94383"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation.eissn","1439-0396"],["dc.relation.issn","0931-2439"],["dc.title","Reticular contraction frequency and ruminal gas dome development in goats do not differ between grass and browse diets"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1127"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Functional Ecology"],["dc.bibliographiccitation.lastpage","1134"],["dc.bibliographiccitation.volume","28"],["dc.contributor.author","Steuer, Patrick"],["dc.contributor.author","Suedekum, Karl-Heinz"],["dc.contributor.author","Tuetken, Thomas"],["dc.contributor.author","Mueller, Dennis W. H."],["dc.contributor.author","Kaandorp, Jacques"],["dc.contributor.author","Bucher, Martin"],["dc.contributor.author","Clauss, Marcus"],["dc.contributor.author","Hummel, Juergen"],["dc.date.accessioned","2018-11-07T09:34:40Z"],["dc.date.available","2018-11-07T09:34:40Z"],["dc.date.issued","2014"],["dc.description.abstract","1. A key concept of body mass (BM) in niche separation of large herbivores assumes that the decrease in diet quality inherent to increasing BM (due to less selective feeding behaviour) is balanced by a simultaneous increase in digestive ability (due to longer retention times), resulting in no or less-than-expected reduction in digestibility (as measured in the animal as a result of diet quality and digestive ability). However, the second part of this concept has been challenged recently due to theoretical problems and mismatch with empirical data. 2. A proxy for digestibility, such as metabolic faecal nitrogen (MFN), will comprise both information on diet quality and digestive ability in free-ranging animals. In captive animals, if diet is kept constant, such a proxy can exclusively indicate digestive ability. Comparing free-ranging and captive animals under such conditions, one would expect an increase in MFN with BM in captive animals and no relationship between these measures in free-ranging animals if BM was related to digestive ability. 3. We compared captive ungulates on a consistent grass hay diet (17 species; 30-4000kg BM) to a sample of free-ranging East African ungulates (19 species; 12-4000kg BM). MFN was used as the major proxy for digestibility. 4. In captive animals, there was no influence of BM on MFN (P=0466); for free-ranging animals, a significant decreasing effect of body mass on MFN (P=0002) and therefore diet quality was found at a scaling of BM-015. 5. In conclusion, scenarios that assume a compensation of the evident decrease in diet quality with BM via an increased digestive ability are not supported by this study. This does not rule out other feeding-related factors in facilitating large BM, such as compensation by an increased diet intake."],["dc.identifier.doi","10.1111/1365-2435.12275"],["dc.identifier.isi","000342615100008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32223"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1365-2435"],["dc.relation.issn","0269-8463"],["dc.title","Does body mass convey a digestive advantage for large herbivores?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3425"],["dc.bibliographiccitation.issue","21"],["dc.bibliographiccitation.journal","Journal of Experimental Biology"],["dc.bibliographiccitation.lastpage","3434"],["dc.bibliographiccitation.volume","218"],["dc.contributor.author","Vendl, Catharina"],["dc.contributor.author","Clauss, Marcus"],["dc.contributor.author","Stewart, Mathew"],["dc.contributor.author","Leggett, Keith"],["dc.contributor.author","Hummel, Juergen"],["dc.contributor.author","Kreuzer, Michael"],["dc.contributor.author","Munn, Adam"],["dc.date.accessioned","2018-11-07T09:49:33Z"],["dc.date.available","2018-11-07T09:49:33Z"],["dc.date.issued","2015"],["dc.description.abstract","Fundamental differences in methane (CH4) production between macropods (kangaroos) and ruminants have been suggested and linked to differences in the composition of the forestomach microbiome. Using six western grey kangaroos (Macropus fuliginosus) and four red kangaroos (Macropus rufus), we measured daily absolute CH4 production in vivo as well as CH4 yield (CH4 per unit of intake of dry matter, gross energy or digestible fibre) by open-circuit respirometry. Two food intake levels were tested using a chopped lucerne hay (alfalfa) diet. Bodymass-specific absoluteCH(4) production resembled values previously reported in wallabies and non-ruminant herbivores such as horses, and did not differ with food intake level, although there was no concomitant proportionate decrease in fibre digestibility with higher food intake. In contrast, CH4 yield decreased with increasing intake, and was intermediate between values reported for ruminants and non-ruminant herbivores. These results correspond to those in ruminants and other non-ruminant species where increased intake (and hence a shorter digesta retention in the gut) leads to a lower CH4 yield. We hypothesize that rather than harbouring a fundamentally different microbiome in their foregut, the microbiome of macropods is in a particular metabolic state more tuned towards growth (i.e. biomass production) rather than CH4 production. This is due to the short digesta retention time in macropods and the known distinct 'digestawashing' in the gut of macropods, where fluids move faster than particles and hence most likely wash out microbes from the forestomach. Although our data suggest that kangaroos only produce about 27% of the body mass-specific volume of CH4 of ruminants, it remains to be modelled with species-specific growth rates and production conditions whether or not significantly lower CH4 amounts are emitted per kg of meat in kangaroo than in beef or mutton production."],["dc.description.sponsorship","Swiss National Science Foundation [310030_135252/1]"],["dc.identifier.doi","10.1242/jeb.128165"],["dc.identifier.isi","000364791100021"],["dc.identifier.pmid","26538176"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35534"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Company Of Biologists Ltd"],["dc.relation.issn","1477-9145"],["dc.relation.issn","0022-0949"],["dc.title","Decreasing methane yield with increasing food intake keeps daily methane emissions constant in two foregut fermenting marsupials, the western grey kangaroo and red kangaroo"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Journal of Experimental Zoology Part B: Molecular and Developmental Evolution"],["dc.contributor.author","Martin, Louise F."],["dc.contributor.author","Ackermans, Nicole L."],["dc.contributor.author","Richter, Henning"],["dc.contributor.author","Kircher, Patrick"],["dc.contributor.author","Hummel, Jürgen"],["dc.contributor.author","Codron, Daryl"],["dc.contributor.author","Clauss, Marcus"],["dc.contributor.author","Hatt, Jean‐Michel"],["dc.date.accessioned","2021-12-01T09:24:14Z"],["dc.date.available","2021-12-01T09:24:14Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1002/jez.b.23104"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94888"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation.eissn","1552-5015"],["dc.relation.issn","1552-5007"],["dc.title","Macrowear effects of external quartz abrasives of different size and concentration in rabbits ( Oryctolagus cuniculus )"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","109793"],["dc.bibliographiccitation.journal","Palaeogeography, Palaeoclimatology, Palaeoecology"],["dc.bibliographiccitation.volume","553"],["dc.contributor.author","Ackermans, Nicole L."],["dc.contributor.author","Martin, Louise F."],["dc.contributor.author","Codron, Daryl"],["dc.contributor.author","Hummel, Jürgen"],["dc.contributor.author","Kircher, Patrick R."],["dc.contributor.author","Richter, Henning"],["dc.contributor.author","Kaiser, Thomas M."],["dc.contributor.author","Clauss, Marcus"],["dc.contributor.author","Hatt, Jean-Michel"],["dc.date.accessioned","2021-04-14T08:23:21Z"],["dc.date.available","2021-04-14T08:23:21Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.palaeo.2020.109793"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/80886"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.issn","0031-0182"],["dc.title","Mesowear represents a lifetime signal in sheep (Ovis aries) within a long-term feeding experiment"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","109728"],["dc.bibliographiccitation.journal","Palaeogeography, Palaeoclimatology, Palaeoecology"],["dc.bibliographiccitation.volume","550"],["dc.contributor.author","Hatt, Jean-Michel"],["dc.contributor.author","Codron, Daryl"],["dc.contributor.author","Ackermans, Nicole L."],["dc.contributor.author","Martin, Louise F."],["dc.contributor.author","Richter, Henning"],["dc.contributor.author","Kircher, Patrick R."],["dc.contributor.author","Gerspach, Christian"],["dc.contributor.author","Hummel, Jürgen"],["dc.contributor.author","Clauss, Marcus"],["dc.date.accessioned","2021-04-14T08:24:34Z"],["dc.date.available","2021-04-14T08:24:34Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.palaeo.2020.109728"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81334"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.issn","0031-0182"],["dc.title","The effect of the rumen washing mechanism in sheep differs with concentration and size of abrasive particles"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","41"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","European Journal of Wildlife Research"],["dc.bibliographiccitation.volume","63"],["dc.contributor.author","Hummel, Juergen"],["dc.contributor.author","Hammer, Catrin"],["dc.contributor.author","Hammer, Sven"],["dc.contributor.author","Suedekum, Karl-Heinz"],["dc.contributor.author","Mueller, Dennis W. H."],["dc.contributor.author","Clauss, Marcus"],["dc.date.accessioned","2018-11-07T10:25:24Z"],["dc.date.available","2018-11-07T10:25:24Z"],["dc.date.issued","2017"],["dc.description.abstract","In contrast to the domestic horse, whose digestive physiology has been thoroughly investigated, knowledge on the digestive physiology of wild equids is scarce. Comparisons between the domestic horse and the domestic donkey suggest that wild asses might achieve higher digestibilities. This could derive from longer retention times or a greater difference in the mean retention time (MRT) of particles vs. fluid (the selectivity factor (SF)). Here, we measured MRT of a solute (fluid; MRTsolute) and a particle (<2 mm; MRTparticle) marker in five captive male Somali wild asses (Equus africanus somaliensis) fed a diet of 95% grass hay. At a mean dry matter intake of 94 +/- 3 g kg(-0.75) day(-1), MRTsolute was 33.3 +/- 5.4 h and MRTparticle 39.6 +/- 3.9 h, resulting in a SF of 1.21 +/- 0.14. For their food intake, Somali wild asses appeared to have slightly higher MRTparticle than expected based on domestic equid data, in contrast to Grevy zebras (Equus grevyi), potentially indicating higher capacities of the digestive tract. However, considering data on domestic horses, donkeys, and zebra, there was no evident difference in the SF of wild equids compared to domestic ones. Together with an absence of reported anatomical differences in the digestive tract of wild and domestic equids, the data suggest a general similarity in the digestive physiology of equid species that contrasts with the diversity in the digestive physiology of ruminants, and that might be one contributing factor to a lack of sympatric, niche-differentiated equid species."],["dc.identifier.doi","10.1007/s10344-017-1098-1"],["dc.identifier.isi","000400097400010"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42855"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Springer"],["dc.relation.issn","1439-0574"],["dc.relation.issn","1612-4642"],["dc.title","Retention of solute and particle markers in the digestive tract of captive Somali wild asses (Equus africanus somaliensis)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]