Gerken, Martina

[["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Sustainability"],["dc.bibliographiccitation.volume","14"],["dc.contributor.affiliation","Pointke, Marcel; 1Division of Quality of Plant Products, Department of Crop Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; epawelz@gwdg.de"],["dc.contributor.affiliation","Albrecht, Elke Herta; 2Division of Ecology of Livestock Production, Department of Animal Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; elkeherta.albrecht@uni-goettingen.de (E.H.A.); katrin.geburt@uni-goettingen.de (K.G.); mgerken@gwdg.de (M.G.)"],["dc.contributor.affiliation","Geburt, Katrin; 2Division of Ecology of Livestock Production, Department of Animal Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; elkeherta.albrecht@uni-goettingen.de (E.H.A.); katrin.geburt@uni-goettingen.de (K.G.); mgerken@gwdg.de (M.G.)"],["dc.contributor.affiliation","Gerken, Martina; 2Division of Ecology of Livestock Production, Department of Animal Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; elkeherta.albrecht@uni-goettingen.de (E.H.A.); katrin.geburt@uni-goettingen.de (K.G.); mgerken@gwdg.de (M.G.)"],["dc.contributor.affiliation","Traulsen, Imke; 3Division Livestock Systems, Department of Animal Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; imke.traulsen@uni-goettingen.de"],["dc.contributor.affiliation","Pawelzik, Elke; 1Division of Quality of Plant Products, Department of Crop Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; epawelz@gwdg.de"],["dc.contributor.author","Pointke, Marcel"],["dc.contributor.author","Albrecht, Elke Herta"],["dc.contributor.author","Geburt, Katrin"],["dc.contributor.author","Gerken, Martina"],["dc.contributor.author","Traulsen, Imke"],["dc.contributor.author","Pawelzik, Elke"],["dc.date.accessioned","2022-07-11T06:54:09Z"],["dc.date.available","2022-07-11T06:54:09Z"],["dc.date.issued","2022-06-30"],["dc.date.updated","2022-07-08T13:18:20Z"],["dc.description.abstract","Consumers are becoming increasingly interested in reducing the consumption of animal-based foods for health, sustainability, and ethical reasons. The food industry is developing products from plant-based ingredients that mimic animal-based foods’ nutritional and sensory characteristics. In this study, the focus is on plant-based milk alternatives (PBMAs). A potential problem with plant-based diets is the deficiency of important micronutrients, such as vitamin B12, B2, and calcium. Therefore, an analysis of micronutrients in PBMAs was conducted to assess their nutritional value. The second main focus was on the sensory description of the PBMAs, done by a trained panel, and instrumental assessment to characterize the sensory attributes. Almond drinks met the daily micronutrient requirements the least, while soy drinks came closest to cow’s milk in macro- and micronutrients. The experimentally determined electronic tongue and volatile compound results confirmed the sensory panel’s evaluations and could therefore be used as a method for easy and effective assessments of PBMAs. The PBMAs evaluated in this study could not completely replace cow’s milk’s nutritional and sensory properties. They are products in their own product group and must be evaluated accordingly. Given the variety of products, consumers should experiment and make their decisions regarding the substitution of cow’s milk."],["dc.description.sponsorship","Volkswagenstif-tung"],["dc.description.sponsorship","Ministry for Science and Culture of Lower Saxony"],["dc.description.sponsorship","Open-Access-Publikationsfonds 2022"],["dc.identifier.doi","10.3390/su14137996"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/112428"],["dc.language.iso","en"],["dc.relation.eissn","2071-1050"],["dc.rights","CC BY 4.0"],["dc.title","A Comparative Analysis of Plant-Based Milk Alternatives Part 1: Composition, Sensory, and Nutritional Value"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","Sustainability"],["dc.bibliographiccitation.volume","14"],["dc.contributor.affiliation","Geburt, Katrin; 1Division of Ecology of Livestock Production, Department of Animal Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; katrin.geburt@uni-goettingen.de (K.G.); elkeherta.albrecht@uni-goettingen.de (E.H.A.); mgerken@gwdg.de (M.G.)"],["dc.contributor.affiliation","Albrecht, Elke Herta; 1Division of Ecology of Livestock Production, Department of Animal Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; katrin.geburt@uni-goettingen.de (K.G.); elkeherta.albrecht@uni-goettingen.de (E.H.A.); mgerken@gwdg.de (M.G.)"],["dc.contributor.affiliation","Pointke, Marcel; 2Division of Quality of Plant Products, Department of Crop Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; marcel.pointke@uni-goettingen.de (M.P.); epawelz@gwdg.de (E.P.)"],["dc.contributor.affiliation","Pawelzik, Elke; 2Division of Quality of Plant Products, Department of Crop Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; marcel.pointke@uni-goettingen.de (M.P.); epawelz@gwdg.de (E.P.)"],["dc.contributor.affiliation","Gerken, Martina; 1Division of Ecology of Livestock Production, Department of Animal Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany; katrin.geburt@uni-goettingen.de (K.G.); elkeherta.albrecht@uni-goettingen.de (E.H.A.); mgerken@gwdg.de (M.G.)"],["dc.contributor.affiliation","Traulsen, Imke; 3Division Livestock Systems, Department of Animal Sciences, Faculty of Agriculture, University of Goettingen, 37075 Goettingen, Germany"],["dc.contributor.author","Geburt, Katrin"],["dc.contributor.author","Albrecht, Elke Herta"],["dc.contributor.author","Pointke, Marcel"],["dc.contributor.author","Pawelzik, Elke"],["dc.contributor.author","Gerken, Martina"],["dc.contributor.author","Traulsen, Imke"],["dc.date.accessioned","2022-08-04T08:24:13Z"],["dc.date.available","2022-08-04T08:24:13Z"],["dc.date.issued","2022-07-09"],["dc.date.updated","2022-08-03T15:20:10Z"],["dc.description.abstract","Human food production is the largest cause of global environmental changes. Environmental benefits could be achieved by replacing diets with a high amount of animal-sourced foods with more plant-based foods, due to their smaller environmental impacts. The objective of this study was to assess the environmental impacts of the three most common plant-based milk alternatives (PBMAs)—oat, soy, and almond drink—in comparison with conventional and organic cow milk. Life cycle assessments (LCA) were calculated by the ReCiPe 2016 midpoint method, in addition to the single issue methods “Ecosystem damage potential” and “Water scarcity index”. PBMAs achieved lower impact values in almost all 12 of the calculated impact categories, with oat drink and the organic soy drink being the most environmentally friendly. However, when LCA results were expressed per energy and by the protein content of the beverages, the ranking of the beverages, in terms of their environmental impacts, changed greatly, and the results of PBMAs approached those of milk, particularly with regard to the protein index. The study highlights the importance of considering a broader range of impact categories when comparing the impacts of PBMAs and milk."],["dc.description.sponsorship","Volkswagenstiftung"],["dc.description.sponsorship","Ministry for Science and Culture of Lower Saxony"],["dc.identifier.doi","10.3390/su14148424"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/112623"],["dc.language.iso","en"],["dc.relation.eissn","2071-1050"],["dc.rights","CC BY 4.0"],["dc.title","A Comparative Analysis of Plant-Based Milk Alternatives Part 2: Environmental Impacts"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","4037"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Riek, Alexander"],["dc.contributor.author","Stölzl, Anna"],["dc.contributor.author","Marquina Bernedo, Rodolfo"],["dc.contributor.author","Ruf, Thomas"],["dc.contributor.author","Arnold, Walter"],["dc.contributor.author","Hambly, Catherine"],["dc.contributor.author","Speakman, John R."],["dc.contributor.author","Gerken, Martina"],["dc.date.accessioned","2019-07-09T11:51:06Z"],["dc.date.available","2019-07-09T11:51:06Z"],["dc.date.issued","2019"],["dc.description.abstract","Some large herbivores exhibit seasonal adjustments in their energy metabolism. Therefore, our aim was to determine if the llama (one of the most extensively kept livestock breeds) exhibits seasonal adjustment of their energy expenditure, body temperature and locomotion, under its natural high altitude Andean habitat. For this purpose, energy expenditure, body temperature and locomotion were measured in seven non-pregnant llama dams for ten months on the Andean High Plateau (4400 m above sea level). Daily energy expenditure was measured as field metabolic rate using the doubly labelled water method at four different measurement times. Additionally, a telemetry system was used to continuously record activity, body temperature (3 min intervals) as well as the position (hourly) of each animal. The results show that llamas adjusted their body temperature and daily energy expenditure according to environmental conditions. Furthermore, llamas under high altitude Andean climatic conditions exhibited a pronounced daily rhythm in body temperature and activity, with low values at sunrise and increasing values towards sunset. Llamas also had remarkably low energy expenditure compared to other herbivores. Thus, despite the domestication process, llamas have not lost the ability to adjust their body temperature and daily energy expenditure under adverse environmental conditions, similar to some wild herbivores"],["dc.identifier.doi","10.1038/s41598-019-40576-9"],["dc.identifier.pmid","30858417"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16048"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59875"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","630"],["dc.title","Energy expenditure and body temperature variations in llamas living in the High Andes of Peru"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","7600"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific reports"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Riek, Alexander"],["dc.contributor.author","Brinkmann, Lea"],["dc.contributor.author","Gauly, Matthias"],["dc.contributor.author","Perica, Jurcevic"],["dc.contributor.author","Ruf, Thomas"],["dc.contributor.author","Arnold, Walter"],["dc.contributor.author","Hambly, Catherine"],["dc.contributor.author","Speakman, John R."],["dc.contributor.author","Gerken, Martina"],["dc.date.accessioned","2019-07-09T11:44:52Z"],["dc.date.available","2019-07-09T11:44:52Z"],["dc.date.issued","2017-08-08"],["dc.description.abstract","Mammals typically keep their body temperature (Tb) within a narrow limit with changing environmental conditions. There are indications that some wild ungulates can exhibit certain forms of energy saving mechanisms when ambient temperatures are low and/or food is scarce. Therefore, the aim of the study was to determine if the llama, one of the most extensively kept domestic livestock species, exhibits seasonal adjustment mechanisms in terms of energy expenditure, Tb and locomotion. For that purpose llamas (N = 7) were kept in a temperate habitat on pasture. Locomotor activity, Tb (measured in the rumen) and the location of each animal were recorded continuously for one year using a telemetry system. Daily energy expenditure was measured as field metabolic rate (FMR). FMR fluctuated considerably between seasons with the lowest values found in winter (17.48 ± 3.98 MJ d-1, 402 kJ kg-0.75 d-1) and the highest in summer (25.87 ± 3.88 MJ d-1, 586 kJ kg-0.75 d-1). Llamas adjusted their energy expenditure, Tb and locomotor activity according to season and also time of day. Thus, llamas seem to have maintained the ability to reduce their energy expenditure and adjust their Tb under adverse environmental conditions as has been reported for some wild ungulates."],["dc.identifier.doi","10.1038/s41598-017-07946-7"],["dc.identifier.pmid","28790450"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14938"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59115"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","2045-2322"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.ddc","630"],["dc.title","Seasonal changes in energy expenditure, body temperature and activity patterns in llamas (Lama glama)."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1175"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Animals"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Warns, Friederike K."],["dc.contributor.author","Gültas, Mehmet"],["dc.contributor.author","van Asten, Astrid L."],["dc.contributor.author","Scholz, Tobias"],["dc.contributor.author","Gerken, Martina"],["dc.date.accessioned","2021-06-01T09:42:30Z"],["dc.date.available","2021-06-01T09:42:30Z"],["dc.date.issued","2021"],["dc.description.abstract","Inadequate possibilities to perform oral manipulation behavior for pigs can lead to misdirection and thus tail biting. Our study aimed to analyze manipulation behaviors of weaner pigs with focus on tail biting and the relationship with agonistic characteristics of the piglets during suckling. We analyzed the individual manipulation behavior of 188 weaner pigs. General health condition and tail lesions were determined weekly. Correlations were estimated between weight at weaning and at the end of rearing period, frequency of manipulative rearing behaviors and Dominance and social tension index based on suckling behavior. Principal component and cluster analyses were performed to identify groups of piglets which showed similar suckling and rearing behaviors. Tail biting increased at the middle and end of rearing with switching roles of biters and victims. Tail lesions were correlated with received tail biting behavior but occurred with a delay of more than a week. The frequency of performed tail biting was correlated with dominance index (rs = −0.256, p < 0.01) and weaning weight (rs = −0.199, p < 0.05). We assume that performed tail biting is more often observed in pigs who show mainly submissive behavior in teat disputes."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.3390/ani11041175"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/85270"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","2076-2615"],["dc.relation.orgunit","Department für Nutztierwissenschaften"],["dc.rights","CC BY 4.0"],["dc.title","Is There a Link between Suckling and Manipulation Behavior during Rearing in Pigs?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1189"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Tropical Animal Health and Production"],["dc.bibliographiccitation.lastpage","1193"],["dc.bibliographiccitation.volume","42"],["dc.contributor.author","Riek, Alexander"],["dc.contributor.author","Gerken, Martina"],["dc.date.accessioned","2018-11-07T08:41:09Z"],["dc.date.available","2018-11-07T08:41:09Z"],["dc.date.issued","2010"],["dc.description.abstract","Total body water (TBW) in 17 suckling and six lactating llamas was estimated from isotope dilution at three different post natum and lactation stages using both (18)O and deuterium oxide (D(2)O). In total, 69 TBW measurements were undertaken. While TBW in lactating dams, expressed in kilogram, remained stable during the three measurement periods (91.8 +/- 15.0 kg), the body water fraction (TBW expressed in percent of body mass) increased slightly (P = 0.042) from 62.9% to 65.8%. In contrast, TBW (kilogram) in suckling llamas increased significantly (P < 0.001) with age and decreased slightly when expressed as a percentage of body mass (P = 0.016). Relating TBW to body mass across all animals yielded a highly significant regression equation (TBW in kilogram = 2.633 + 0.623 body mass in kilogram, P < 0.001, n = 69) explaining 99.5% of the variation. The water fraction instead decreased in a curve linear fashion with increasing body mass (TBW in percent of body mass = 88.23 body mass in kilogram(-0.064), P < 0.001, R (2) = 0.460). The present results on TBW can serve as reference values for suckling and lactating llamas, e.g., for the evaluation of fluid losses during disease. Additionally, the established regression equations can be used to predict TBW from body mass, providing that the body masses fall inside the range of masses used to derive the equations."],["dc.description.sponsorship","European Union [ICA4-CT-2002-10014]"],["dc.identifier.doi","10.1007/s11250-010-9547-9"],["dc.identifier.isi","000279713800024"],["dc.identifier.pmid","20379776"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/6817"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19406"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0049-4747"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Estimating total body water content in suckling and lactating llamas (Lama glama) by isotope dilution"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Animal Science Journal"],["dc.bibliographiccitation.volume","93"],["dc.contributor.affiliation","Enke, Nick; 1\r\nDepartment of Animal Sciences\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.affiliation","Brinkmann, Lea; 1\r\nDepartment of Animal Sciences\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.affiliation","Tholen, Ernst; 2\r\nInstitute of Animal Science\r\nUniversity of Bonn\r\nBonn Germany"],["dc.contributor.affiliation","Gerken, Martina; 1\r\nDepartment of Animal Sciences\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.author","Enke, Nick"],["dc.contributor.author","Brinkmann, Lea"],["dc.contributor.author","Südekum, Karl‐Heinz"],["dc.contributor.author","Tholen, Ernst"],["dc.contributor.author","Gerken, Martina"],["dc.date.accessioned","2022-04-01T10:00:25Z"],["dc.date.available","2022-04-01T10:00:25Z"],["dc.date.issued","2022"],["dc.date.updated","2022-06-14T21:53:30Z"],["dc.description.abstract","Abstract Horses lose high amounts of Na through excessive sweating. These fluid losses can often not be replaced completely by voluntary water intake, requiring saline solutions as rehydration therapy to regain electrolyte balance. The experiment aimed to evaluate the sensitivity and tolerance of Shetland ponies towards different Na concentrations in their drinking water and contained three phases: (1) control: only fresh water provided; (2) pairwise‐preference test: choice between fresh water and saline solution with stepwise increasing sodium chloride (NaCl) concentration (0.25%, 0.5%, 0.75%, 1.0%, 1.25%, or 1.5%); and (3) free‐choice test: six simultaneously provided buckets containing NaCl concentrations of 0%, 0.25%, 0.5%, 0.75%, 1.0%, or 1.25%. During the pairwise test, the ponies did not distinguish between fresh and 0.25% NaCl‐water but demonstrated clear preference for 0.5%, whereas >0.75% NaCl was avoided/rejected. During the free‐choice test, a pronounced preference of fresh over saline water was exhibited. The Na intake via salt lick was not reduced as response to higher Na intakes via water. The ponies exhibited a remarkable sensory discrimination capacity to detect different NaCl concentrations in their drinking water. The acceptance of solutions with low NaCl levels (0.25/0.5%) without adverse effects demonstrates potential as rehydration solution for voluntary intake."],["dc.identifier.doi","10.1111/asj.13697"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/105423"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","1740-0929"],["dc.relation.issn","1344-3941"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made."],["dc.rights.uri","http://creativecommons.org/licenses/by-nc-nd/4.0/"],["dc.title","Sensitivity of ponies to sodium in the drinking water"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]