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Korir D, Marquardt S, Eckard R, Sanchez A, Dickhoefer U, Merbold L, Butterbach-Bahl K, Jones C, Robertson-Dean M, Goopy J. Weight gain and enteric methane production of cattle fed on tropical grasses. Anim Prod Sci 2022. [DOI: 10.1071/an21327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Giller K, Sinz S, Messadene-Chelali J, Marquardt S. Maternal and direct dietary polyphenol supplementation affect growth, carcass and meat quality of sheep and goats. Animal 2021; 15:100333. [PMID: 34371471 DOI: 10.1016/j.animal.2021.100333] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 10/20/2022] Open
Abstract
The beneficial effects of polyphenol intake such as improved nitrogen retention make them interesting feed supplements for ruminants. In contrast, dietary polyphenols may have adverse effects on the bioavailability of nutrients and palatability of the feed which might impair growth performance. The beneficial and adverse effects might differ between different ruminant species as well as between direct intake and intake of polyphenol metabolites via suckling when supplemented to lactating dams. This study investigated the effects of maternal and direct polyphenol supplementation via grape seed extract in sheep and goats on growth, slaughter performance, meat quality and fatty acid profile. The diet of lactating East Friesian Dairy sheep (n = 11) and Saanen goats (n = 9) and of their lambs (n = 16) and kids (n = 13), respectively, was supplemented either with grape seed extract (dams: 7.4% and offspring: 5.6%, P) or without (C). This resulted in four groups per species, namely maternalC/offspringC, maternalC/offspringP, maternalP/offspringC, and maternalP/offspringP. In lambs but not in goats, maternalP increased average daily gain and improved slaughter performance whereas offspringP had no effect. Maternal and offspring diet did not affect physicochemical meat quality in lambs, but direct intake of grape seed extract increased rancid aroma of burger patties. In goat kids, both maternal and offspring diets slightly affected meat colour. While groups of meat fatty acids (FAs) were not affected by diet in both species, maternalP in lambs as well as maternalP and offspringP in goat kids increased the meat n-6 to n-3 FA ratio compared to the respective control groups. In goat kid but not in lamb meat, direct intake of polyphenols affected the proportions of several rumen biohydrogenation intermediates. In conclusion, grape seed extract can be applied in both the maternal and offspring diets in sheep and goats while maintaining or even improving offspring growth performance and carcass quality. Only few species-specific effects of grape seed extract supplementation were observed, and additive effects were scarce. Larger studies are required to confirm the observed species-specific growth response to maternalP during lactation. The underlying reasons for this differential response need to be further evaluated.
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Affiliation(s)
- K Giller
- ETH Zurich, Institute of Agricultural Sciences, Universitaetstrasse 2, 8092 Zurich, Switzerland.
| | - S Sinz
- ETH Zurich, Institute of Agricultural Sciences, Universitaetstrasse 2, 8092 Zurich, Switzerland
| | | | - S Marquardt
- ETH Zurich, Institute of Agricultural Sciences, Universitaetstrasse 2, 8092 Zurich, Switzerland
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Birkinshaw A, Schwarm A, Marquardt S, Kreuzer M, Terranova M. Rapid responses in bovine milk fatty acid composition and phenol content to various tanniferous forages. J Anim Feed Sci 2020. [DOI: 10.22358/jafs/131171/2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ineichen S, Kuenzler A, Kreuzer M, Marquardt S, Reidy B. Digestibility, nitrogen utilization and milk fatty acid profile of dairy cows fed hay from species rich mountainous grasslands with elevated herbal and phenolic contents. Anim Feed Sci Technol 2019. [DOI: 10.1016/j.anifeedsci.2018.11.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Maschke S, Werncke T, Renne J, Marquardt S, Wacker F, Meyer B, Hinrichs J. 3:36 PM Abstract No. 286 Transjugular intrahepatic portosystemic shunt dysfunction: quantitative assessment of perfusion changes using 2D-perfusion angiography following shunt revision. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Marquardt S, Barsila SR, Amelchanka SL, Devkota NR, Kreuzer M, Leiber F. Fatty acid profile of ghee derived from two genotypes (cattle–yak vs yak) grazing different alpine Himalayan pasture sites. Anim Prod Sci 2018. [DOI: 10.1071/an16111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The fatty acid (FA) profile of ghee produced from milk of cattle–yak hybrids grazing five mountain pasture sites along a high-alpine transhumance route in Nepal was analysed. Pastures differed in altitude above sea level (2600–4500 m), time period of being grazed and phytochemical composition of the swards. Additionally, a comparison of ghee from purebred yak and hybrid was performed, with samples produced at two of the sites. Pasture site had a strong effect on almost all FAs. Proportions of oleic, linoleic and α-linolenic acid in ghee were smallest on the highest pasture at 4500 m where the largest condensed tannin concentrations in the forages were found. No systematic site effects were found for c9,t11 conjugated linoleic acid and total polyunsaturated FAs. Ghee produced from the hybrids’ milk was richer in major functional FAs such as α-linolenic and linoleic acid, while yak ghee contained more saturated FAs and eicosapentaenoic, docosapentaenoic and docosahexaenoic acids.
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Wang S, Müller A, Hilfiker D, Marquardt S, Kreuzer M, Braun U, Schwarm A. Effect of individual Ayurveda plants and mixtures thereof on in vitro ruminal fermentation, methane production and nutrient degradability. Anim Prod Sci 2018. [DOI: 10.1071/an17174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In order to identify new ways to mitigate methane emissions from ruminants, six medicinal plants, Achyranthes aspera, Azadirachta indica, Andrographis paniculata, Helicteres isora, Tinospora cordifolia and Piper longum, were evaluated in vitro with respect to ruminal fermentation and methanogenesis. A three-stage approach with n = 6 per treatment was applied. Two 24-h Hohenheim gas test experiments were performed by incubating the plants first as sole substrate and then added to a basal diet (10 g/kg diet DM). Finally, in a 10-day Rusitec experiment, A. paniculata, P. longum and T. cordifolia were supplemented individually and in all binary combinations to a basal diet (25 g/kg DM). Provided as sole substrate, all plants, except P. longum, decreased methane and carbon dioxide production (P < 0.05), and reduced the methane : short-chain fatty acid ratio (P < 0.05) in the Hohenheim gas test. In Rusitec, none of the individual supplements decreased methane production. The combination of A. paniculata with P. longum as a supplement was effective in mitigating the methane : carbon dioxide ratio and simultaneously maintaining feeding value. In conclusion, all medicinal plants incubated as sole substrate, except P. longum, possess anti-methanogenic properties, especially T. cordifolia, A. indica and H. isora. When supplemented at the levels investigated, they were mostly neutral with respect to rumen fermentation and nutrient digestion. Combining A. paniculata with P. longum mitigated methane without side effects on general ruminal fermentation. Further investigations, carried out in vivo, will demonstrate how useful this plant combination is in ruminant nutrition.
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Lauermann J, Potthoff A, Mc Cavert M, Marquardt S, Vaske B, Rosenthal H, von Hahn T, Wacker F, Meyer BC, Rodt T. Erratum to: Comparison of Technical and Clinical Outcome of Transjugular Portosystemic Shunt Placement Between a Bare Metal Stent and a PTFE-Stentgraft Device. Cardiovasc Intervent Radiol 2015; 39:635-6. [PMID: 26662291 DOI: 10.1007/s00270-015-1262-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- J Lauermann
- Department of Diagnostic and Interventional Radiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
| | - A Potthoff
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - M Mc Cavert
- Department of Diagnostic and Interventional Radiology, Beaumont Hospital, Dublin, Ireland
| | - S Marquardt
- Department of Diagnostic and Interventional Radiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - B Vaske
- Institute of Biometry, Hannover Medical School, Hannover, Germany
| | - H Rosenthal
- Department of Diagnostic and Interventional Radiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - T von Hahn
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - F Wacker
- Department of Diagnostic and Interventional Radiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - B C Meyer
- Department of Diagnostic and Interventional Radiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Thomas Rodt
- Department of Diagnostic and Interventional Radiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
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Ding L, Chen J, Long R, Gibb M, Wang L, Sang C, Mi J, Zhou J, Liu P, Shang Z, Guo X, Qiu Q, Marquardt S. Blood hormonal and metabolite levels in grazing yak steers undergoing compensatory growth. Anim Feed Sci Technol 2015. [DOI: 10.1016/j.anifeedsci.2015.07.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Lauermann J, Potthoff A, Mc Cavert M, Marquardt S, Vaske B, Rosenthal H, von Hahn T, Wacker F, Meyer BC, Rodt T. Comparison of Technical and Clinical Outcome of Transjugular Portosystemic Shunt Placement Between a Bare Metal Stent and a PTFE-Stentgraft Device. Cardiovasc Intervent Radiol 2015; 39:547-56. [DOI: 10.1007/s00270-015-1209-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 08/29/2015] [Indexed: 02/07/2023]
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Hinrichs J, Marquardt S, Renne J, Falck CV, Hoeper M, Olsson K, Wacker F, Meyer B. Chronisch thromboembolische pulmonale Hypertonie: Diagnostischer Zugewinn durch C-Arm CT im Vergleich zur digitalen Subtraktionsangiografie. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1550974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hinrichs J, Marquardt S, Renne J, Falck CV, Wacker F, Meyer B. Pulmonale Ballonangioplastie: Führung der Intervention mittels überlagertem selektivem C-Arm CT. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hinrichs J, Marquardt S, Renne J, Wacker F, Meyer B. Chronisch thromboembolische pulmonale Hypertonie (CTEPH): Fluoroskopie-basierte Registrierung einer vormals akquirierten C-Arm CT zur Interventionsführung. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Barsila S, Kreuzer M, Devkota N, Ding L, Marquardt S. Adaptation to Himalayan high altitude pasture sites by yaks and different types of hybrids of yaks with cattle. Livest Sci 2014. [DOI: 10.1016/j.livsci.2014.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Meier J, Abdalla A, Vasconcelos VR, Kreuzer M, Marquardt S. Effect of offering a multiple choice among Brazilian woody plants on intake and feeding behavior of experienced and inexperienced Santa Inês lambs. Small Rumin Res 2014. [DOI: 10.1016/j.smallrumres.2014.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Rodt T, Lauermann J, Hasdemir D, Potthoff A, Marquardt S, Falck CV, Rosenthal H, Wacker F, Meyer B. TIPS bei Patienten mit portaler Hypertension aufgrund von Leberzirrhose: Vergleich von initialem technischen Outcome und Langzeitoffenheitsraten zwischen Stent und PTFE-Stentgraft. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Marquardt S, Rosenthal H, Hinrichs J, Wacker F, Meyer B. Transjugulärer intrahepatischer portosystemischer Shunt (TIPS): Einfluss verschiedener Faktoren auf die Dauer der Intervention. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Meier J, Liesegang A, Louhaichi M, Hilali M, Rischkowsky B, Kreuzer M, Marquardt S. Intake pattern and nutrient supply of lactating sheep selecting dried forage from woody plants and straw offered in binary or multiple choice. Anim Feed Sci Technol 2014. [DOI: 10.1016/j.anifeedsci.2013.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Meier JS, Liesegang A, Rischkowsky B, Louhaichi M, Zaklouta M, Kreuzer M, Marquardt S. Influence of experience on intake and feeding behavior of dairy sheep when offered forages from woody plants in a multiple-choice situation. J Anim Sci 2013; 91:4875-86. [PMID: 23989878 DOI: 10.2527/jas.2012-5923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A satisfactory intake of novel low-quality forages by ruminants may require previous experience with this feed. Therefore, this study tested in sheep whether experience with forages from woody plants had an influence on feed intake, feeding behavior, and nutrient supply when offered in a multiple-choice arrangement. Two sheep experiments were conducted, 1 in Syria (Mediterranean region; Exp. 1) and the other in Switzerland (Central Europe; Exp. 2), that investigated 5 and 6 woody test plants, respectively. In Exp. 1, the test plants were Artemisia herba-alba, Atriplex leucoclada, Haloxylon articulatum, Noaea mucronata, and Salsola vermiculata. In Exp. 2, Betula pendula, Castanea sativa, and Juglans regia were used in addition to A. leucoclada, H. articulatum, and S. vermiculata (the plants most consumed in Exp. 1). In each experiment, 12 lactating sheep (Awassi sheep in Exp. 1 and East Friesian Milk sheep in Exp. 2) were allocated to 2 groups ("experienced" and "naïve"). Experienced sheep subsequently were familiarized with each test plant during a learning period of binary choices (1 test plant vs. barley straw) for 4 h in the morning for 7 d each. The naïve group received only straw. During the rest of the day, a basal diet composed of barley straw (ad libitum) and concentrate was offered to both groups. For the 2 wk following the learning period, the sheep were subjected to feeding of the basal diet to avoid carryover effects of the last offered test plant. In the following multiple-choice period, both groups were allowed to select from all test plants during 4 h in the morning for 14 d. Forage intake after 4 and 24 h and feeding behavior during the first 30 min of the test feeding were assessed. Milk yield and composition were measured at the end of the multiple-choice period. Nutrient intake was calculated using feed intake measurements and compositional analyses. Only in Exp. 2, group differences (P < 0.05) were found on d 1 of the multiple-choice period. The experienced sheep consumed more total forage, straw, OM, NDF, ADF, and ADL (nutrients without concentrate). However, across the entire multiple-choice period, there were no differences (P ≥ 0.05) in forage and nutrient intake, feeding behavior, and milk yield and composition between the groups in both experiments. This suggests that sheep can quickly adapt to previously unknown woody feeds of varying origin and quality offered as dried supplements.
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Affiliation(s)
- J S Meier
- ETH Zurich, Institute of Agricultural Sciences, Universitaetstrasse 2, 8092 Zurich, Switzerland
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Tewes S, Rodt T, Marquardt S, Evangelidou E, Wacker FK, von Falck C. Evaluation of the use of a tablet computer with a high-resolution display for interpreting emergency CT scans. ROFO-FORTSCHR RONTG 2013; 185:1063-9. [PMID: 23893749 DOI: 10.1055/s-0033-1350155] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE Evaluation of the potential usability of an iPad 3 with a high-resolution display in CT emergency diagnosis compared to a 3 D PACS workstation. MATERIALS AND METHODS 3 readers used a 5-point Likert scale to evaluate 40 CCT scans and 40 CTPA scans to determine the detectability of early signs of infarction in CCT or segmental and subsegmental pulmonary embolisms in CT angiography of the pulmonary arteries (CTPA) on the iPad 3 (Apple Inc., USA) using an application for image viewing (Visage Ease, Visage Imaging GmbH, Berlin) and on a 3 D PACS workstation (Visage 7.1, Visage Imaging, Berlin) using a certified monitor for image viewing. The results were compared using the Wilcoxon rank sum test, Spearman's correlation coefficient, and a kappa statistic. RESULTS There was no significant difference in the median evaluations for the readings of both the CCT scans and the CTPA scans on the iPad 3 and on the workstation (p > 0.05) for all three readers. The mean Spearman's correlation coefficient for CCT and CTPA was 0.46 (± 0.2) and 0.69 (± 0.16), respectively, for the comparison iPad/PACS, 0.41 (± 0.16) and 0.68 (± 0.06), respectively, for the interobserver agreement on the iPad, and 0.35 (± 0.05) and 0.68 (± 0.10), respectively, for the interobserver agreement on the PACS. Mean kappa values for CCT of 0.52 (± 0.17) for the comparison iPad/PACS and 0.33 (± 0.16) and 0.32 (± 0.16), respectively, for the interobserver agreement on the iPad and the PACS were achieved. For CTPA average kappa values of 0.67 (± 0.19) were calculated for the comparison iPad/PACS and 0.69 (± 0.08) and 0.60 (± 0.14), respectively, for the interobserver concordance on the iPad 3 and the PACS. All differences were not statistically significant (p > 0.05). CONCLUSION The variability of the interpretation of typical emergency scans on an iPad 3 with a high-resolution display and on a 3 D PACS workstation does not differ from the interobserver variability.
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Jayanegara A, Wina E, Soliva C, Marquardt S, Kreuzer M, Leiber F. Dependence of forage quality and methanogenic potential of tropical plants on their phenolic fractions as determined by principal component analysis. Anim Feed Sci Technol 2011. [DOI: 10.1016/j.anifeedsci.2010.11.009] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Winterer G, Postnikov N, Ziller M, Niestroj F, Frick K, Heinz A, Marquardt S, Lewinsky M, Herrmann W. Signalkomplexität versus Spektralparameter in EEG-Zeitreihen von psychiatrischen Patienten: Eine retrospektive Klassifikationsstudie. KLIN NEUROPHYSIOL 2008. [DOI: 10.1055/s-2008-1060220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kendoff D, Meller R, Citak M, Pearle A, Marquardt S, Krettek C, Hüfner T. Navigation in ACL reconstruction – Comparison with conventional measurement tools. Technol Health Care 2007. [DOI: 10.3233/thc-2007-15306] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- D. Kendoff
- Trauma Department, Hannover Medical School, Hannover, Germany
| | - R. Meller
- Trauma Department, Hannover Medical School, Hannover, Germany
| | - M. Citak
- Trauma Department, Hannover Medical School, Hannover, Germany
| | - A. Pearle
- Orthopaedic Department, Hospital for Special Surgery, New York, USA
| | - S. Marquardt
- Trauma Department, Hannover Medical School, Hannover, Germany
| | - C. Krettek
- Trauma Department, Hannover Medical School, Hannover, Germany
| | - T. Hüfner
- Trauma Department, Hannover Medical School, Hannover, Germany
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Kendoff D, Meller R, Citak M, Pearle A, Marquardt S, Krettek C, Hüfner T. Navigation in ACL reconstruction - comparison with conventional measurement tools. Technol Health Care 2007; 15:221-30. [PMID: 17473402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Restoration of rotational and translational stability is a goal of ACL reconstruction. Intraoperative instability measurements of AP translation and rotation are not well established clinically. We compared navigated measurements of tibial AP translation and rotation with mechanical measuring devices: the KT 1000 and a modified goniometer tool. Tests were repeated with intact and dissected ACLs, and measures of translation and rotation statistically compared. There was no significant difference in AP translation between navigation, 3.2 mm (range 1-6 mm) and the KT 1000, 4.8 mm (range, 4-7 mm) in our experimental set up (p>0.05). Tibial rotation revealed no significant difference, 0.12 degrees (range, 0 degrees -1 degrees ) between navigation and goniometer (p>0.05). Total range of rotation was 4.2 degrees (range, 2 degrees -6 degrees ) in intact and 7.05 degrees (range, 4 degrees -9 degrees ) in dissected ACLs (p<0.05). Stability parameters in ACL navigation can be measured precisely under laboratory conditions and results are not significantly different from mechanical testing devices.
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Affiliation(s)
- D Kendoff
- Trauma Department, Hannover Medical School, Hannover, Germany.
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Hoffmann LJH, Marquardt S, Gemechu AS, Baumgärtel H. The absorption spectra of anisole-h8, anisole-d3 and anisole-d8. The assignment of fundamental vibrations in the S0and the S1states. Phys Chem Chem Phys 2006; 8:2360-77. [PMID: 16710484 DOI: 10.1039/b600438p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The REMPI spectra of anisole-h8, anisole-d3 and anisole-d8 have been measured. The assignment of the fundamental vibrations of anisole in the S(1) state is supported by quantum chemical model calculations, the isotopic shifts, the comparison with the frequencies of corresponding vibrations in other monosubstituted benzenes, especially phenol, and the overtones, combinations and progressions observed in the spectrum of anisole-h8. The frequencies of the 42 fundamental vibrations of anisole in the S(1) state are evaluated and compared with the frequencies of the corresponding vibrations in the electronic ground state. Some assignments given earlier in the literature have been revised.
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Affiliation(s)
- L J H Hoffmann
- Institute of Chemistry, Department of Physical and Theoretical Chemistry, Free University Berlin
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Abstract
A central player in the Arabidopsis floral transition is the floral repressor FLC, the MADS-box transcriptional regulator that inhibits the activity of genes required to switch the meristem from vegetative to floral development. One of the many pathways that regulate FLC expression is the autonomous promotion pathway composed of FCA, FY, FLD, FPA, FVE, LD, and FLK. Rather than a hierarchical set of activities the autonomous promotion pathway comprises sub-pathways of genes with different biochemical functions that all share FLC as a target. One sub-pathway involves FCA and FY, which interact to regulate RNA processing of FLC. Several of the identified components (FY, FVE, and FLD) are homologous to yeast and mammalian proteins with rather generic roles in gene regulation. So why do mutations in these genes specifically show a late-flowering phenotype in Arabidopsis? One reason, found during the analysis of fy alleles, is that the mutant alleles identified in flowering screens can be hypomorphic, they still have partial function. A broader role for the autonomous promotion pathway is supported by a microarray analysis which has identified genes mis-regulated in fca mutants, and whose expression is also altered in fy mutants.
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Affiliation(s)
- S Marquardt
- Department of Cell and Developmental Biology, John Innes Centre, Colney Lane, Norwich NR4 7UH, UK
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Marquardt S. "Green havoc": Panama disease, environmental change, and labor process in the Central American banana industry. Am Hist Rev 2001; 106:49-80. [PMID: 19068931 DOI: 10.2307/2652224] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Böttner R, Ratz S, Schroeder N, Marquardt S, Gerhardt U, Gaska R, Vaitkus J. Analysis of angle-resolved photoemission data of PbS (001) surfaces within the direct-transition model. Phys Rev B Condens Matter 1996; 53:10336-10343. [PMID: 9982603 DOI: 10.1103/physrevb.53.10336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Marquardt S, Einig W, Classen HG, Spätling L. Einfluß hochdosierter Magnesiuminfusion auf Metabolismus, Kreislauf, Atmung, Reaktionszeit und Empfinden. Arch Gynecol Obstet 1993. [DOI: 10.1007/bf02266467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
To investigate the incidence of ovine Eimeria spp. and seasonal dynamics in oocyst output, fecal samples of sheep from three different management systems were collected monthly over a 1-year period and examined for oocysts. A total of 10 species of Eimeria were observed. The most frequent species were E. bakuensis, E. ovinoidalis, E. weybridgensis/crandallis, E. parva and E. ahsata whereas E. faurei, E. granulosa, E. intricata and E. pallida were found less often. Lambs passed larger numbers of oocysts in their feces than either ewes or yearlings.
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Affiliation(s)
- D Barutzki
- Institute for Comparative Tropical Medicine and Parasitology, University of Munich, F.R.G
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Marquardt S. Prinzipien der Simultantomographie. ROFO-FORTSCHR RONTG 1955. [DOI: 10.1055/s-0029-1212502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Marquardt S. Der Umbau des Wirbelkörpers bei Skoliosen. ROFO-FORTSCHR RONTG 1954. [DOI: 10.1055/s-0029-1212326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Marquardt S. Studie über röntgenologische Veränderungen bei Thoraxdeformitäten. ROFO-FORTSCHR RONTG 1953. [DOI: 10.1055/s-0029-1232171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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