Hummel, Jürgen

[["dc.bibliographiccitation.firstpage","591"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of Animal Physiology and Animal Nutrition"],["dc.bibliographiccitation.lastpage","604"],["dc.bibliographiccitation.volume","99"],["dc.contributor.author","Mueller, J."],["dc.contributor.author","Clauss, M."],["dc.contributor.author","Codron, Daryl"],["dc.contributor.author","Schulz, E."],["dc.contributor.author","Hummel, Juergen"],["dc.contributor.author","Kircher, Patrick"],["dc.contributor.author","Hatt, J-M."],["dc.date.accessioned","2018-11-07T09:56:54Z"],["dc.date.available","2018-11-07T09:56:54Z"],["dc.date.issued","2015"],["dc.description.abstract","Dental diseases are among the most important reasons for presenting guinea pigs (Cavia porcellus) and other rodents to veterinary clinics, but the aetiopathology of this disease complex is unclear. Clinicians tend to believe that the ever-growing teeth of rabbits and rodents have a constant growth that needs to be worn down by the mastication of an appropriate diet. In this study, we tested the effect of four different pelleted diets of increasing abrasiveness [due to both internal (phytoliths) and external abrasives (sand)] or whole grass hay fed for 2weeks each in random order to 16 guinea pigs on incisor growth and wear, and tooth length of incisors and cheek teeth. There was a positive correlation between wear and growth of incisors. Tooth lengths depended both on internal and external abrasives, but only upper incisors were additionally affected by the feeding of whole hay. Diet effects were most prominent in anterior cheek teeth, in particular M1 and m1. Cheek tooth angle did not become shallower with decreasing diet abrasiveness, suggesting that a lack of dietary abrasiveness does not cause the typical bridge formation' of anterior cheek teeth frequently observed in guinea pigs. The findings suggest that other factors than diet abrasiveness, such as mineral imbalances and in particular hereditary malocclusion, are more likely causes for dental problems observed in this species."],["dc.identifier.doi","10.1111/jpn.12226"],["dc.identifier.isi","000353360500021"],["dc.identifier.pmid","25041439"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37058"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1439-0396"],["dc.relation.issn","0931-2439"],["dc.title","Tooth length and incisal wear and growth in guinea pigs (Cavia porcellus) fed diets of different abrasiveness"],["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 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","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","61"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Animal Physiology and Animal Nutrition"],["dc.bibliographiccitation.lastpage","69"],["dc.bibliographiccitation.volume","101"],["dc.contributor.author","Clauss, M."],["dc.contributor.author","Fritz, J."],["dc.contributor.author","Tschuor, A."],["dc.contributor.author","Braun, Ulrich"],["dc.contributor.author","Hummel, Juergen"],["dc.contributor.author","Codron, Daryl"],["dc.date.accessioned","2018-11-07T10:27:44Z"],["dc.date.available","2018-11-07T10:27:44Z"],["dc.date.issued","2017"],["dc.description.abstract","Physical properties of the digesta vary along the ruminant digestive tract. They also vary within the forestomach, leading to varying degrees of rumen contents stratification in `moose-type' (browsing) and `cattle-type' (intermediate and grazing) ruminants. We investigated the dry matter concentration (DM) and the mean digesta particle size (MPS) within the forestomach and along the digestive tract in 10 goats fed grass hay or dried browse after a standardized 12-h fast, euthanasia and freezing in the natural position. In all animals, irrespective of diet, DM showed a peak in the omasum and an increase from caecum via colon towards the faeces and a decrease in MPS between the reticulum and the omasum. Both patterns are typical for ruminants in general. In the forestomach, there was little systematic difference between more cranial and more caudal locations (`horizontal stratification'), with the possible exception of large particle segregation in the dorsal rumen blindsac on the grass diet. In contrast, the typical (vertical) contents stratification was evident for DM (with drier contents dorsally) and, to a lower degree, for MPS (with larger particles dorsally). Although evident in both groups, this stratification was more pronounced on the grass diet. The results support the interpretation that differences in rumen contents stratification between ruminants are mainly an effect of species-specific physiology, but can be enhanced due to the diet consumed."],["dc.identifier.doi","10.1111/jpn.12505"],["dc.identifier.isi","000396896300009"],["dc.identifier.pmid","27016403"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43287"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Wiley"],["dc.relation.issn","1439-0396"],["dc.relation.issn","0931-2439"],["dc.title","Dry matter and digesta particle size gradients along the goat digestive tract on grass and browse diets"],["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.firstpage","283"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL GENETICS AND PHYSIOLOGY"],["dc.bibliographiccitation.lastpage","298"],["dc.bibliographiccitation.volume","321"],["dc.contributor.author","Mueller, Jacqueline"],["dc.contributor.author","Clauss, Marcus"],["dc.contributor.author","Codron, Daryl"],["dc.contributor.author","Schulz, Ellen"],["dc.contributor.author","Hummel, Juergen"],["dc.contributor.author","Fortelius, Mikael"],["dc.contributor.author","Kircher, Patrick"],["dc.contributor.author","Hatt, Jean-Michel"],["dc.date.accessioned","2018-11-07T09:39:43Z"],["dc.date.available","2018-11-07T09:39:43Z"],["dc.date.issued","2014"],["dc.description.abstract","Although patterns of tooth wear are crucial in palaeo-reconstructions, and dental wear abnormalities are important in veterinary medicine, experimental investigations on the relationship between diet abrasiveness and tooth wear are rare. Here, we investigated the effect of four different pelleted diets of increasing abrasiveness (due to both internal [phytoliths] and external abrasives [sand]) or whole grass hay fed for 2 weeks each in random order to 16 rabbits (Oryctolagus cuniculus) on incisor and premolar growth and wear, and incisor and cheek tooth length. Wear and tooth length differed between diets, with significant effects of both internal and external abrasives. While diet abrasiveness was linked to tooth length for all tooth positions, whole forage had an additional effect on upper incisor length only. Tooth growth was strongly related to tooth wear and differed correspondingly between diets and tooth positions. At 1.4-3.2mm/week, the growth of cheek teeth measured in this study was higher than previously reported for rabbits. Dental abnormalities were most distinct on the diet with sand. This study demonstrates that concepts of constant tooth growth in rabbits requiring consistent wear are inappropriate, and that diet form (whole vs. pelleted) does not necessarily affect cheek teeth. Irrespective of the strong effect of external abrasives, internal abrasives have the potential to induce wear and hence exert selective pressure in evolution. Detailed differences in wear effects between tooth positions allow inferences about the mastication process. Elucidating feedback mechanisms that link growth to tooth-specific wear represents a promising area of future research. J. Exp. Zool. 321A:283-298, 2014. (c) 2014 Wiley Periodicals, Inc."],["dc.identifier.doi","10.1002/jez.1864"],["dc.identifier.isi","000335402600006"],["dc.identifier.pmid","24700486"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33352"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1932-5231"],["dc.relation.issn","1932-5223"],["dc.title","Growth and Wear of Incisor and Cheek Teeth in Domestic Rabbits ( Oryctolagus cuniculus) Fed Diets of Different Abrasiveness"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","109886"],["dc.bibliographiccitation.journal","Palaeogeography, Palaeoclimatology, Palaeoecology"],["dc.bibliographiccitation.volume","556"],["dc.contributor.author","Martin, Louise F."],["dc.contributor.author","Krause, Lisa"],["dc.contributor.author","Ulbricht, Arlett"],["dc.contributor.author","Winkler, Daniela E."],["dc.contributor.author","Codron, Daryl"],["dc.contributor.author","Kaiser, Thomas M."],["dc.contributor.author","Müller, Jacqueline"],["dc.contributor.author","Hummel, Jürgen"],["dc.contributor.author","Clauss, Marcus"],["dc.contributor.author","Hatt, Jean-Michel"],["dc.contributor.author","Schulz-Kornas, Ellen"],["dc.date.accessioned","2021-04-14T08:31:58Z"],["dc.date.available","2021-04-14T08:31:58Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.palaeo.2020.109886"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83765"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.issn","0031-0182"],["dc.title","Dental wear at macro- and microscopic scale in rabbits fed diets of different abrasiveness: A pilot investigation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]