Hessel, Engel F.

[["dc.bibliographiccitation.firstpage","630"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Journal of Equine Veterinary Science"],["dc.bibliographiccitation.lastpage","639"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Garlipp, Felix"],["dc.contributor.author","Hessel, Engel F."],["dc.contributor.author","van den Weghe, Herman F. A."],["dc.date.accessioned","2018-11-07T08:50:11Z"],["dc.date.available","2018-11-07T08:50:11Z"],["dc.date.issued","2011"],["dc.description.abstract","This study was designed to analyze the reduction potential of three different liquid additives (water, rapeseed oil, and molasses) in three different concentrations mixed with cleaned whole or rolled oats on the generation of airborne particles under standardized laboratory conditions. In addition, the influence of two different drop heights (20 and 40 cm) was analyzed. Airborne particle concentrations were detected online with the gravimetrically measuring analyzer TEOM 1400a that was equipped successively with different inlets to measure the particle fractions PM(20), PM(10), and PM(2.5). The mixing of oats with just 1% (w/w) of each of the liquid additives led to a significant reduction in airborne particle generation in all three particle fractions with respect to the samples without additives (P < .0001). By the addition of 1% oil, a reduction in the PM(20) fraction of 90.6% (120.3 mu g/m(3)) could be achieved. The same dosage of water or molasses only resulted in a reduction of 60.4% (504.6 mu g/m(3)) or 69.1% (393.2 mu g/m(3)), respectively. In general, the highest significant reduction in the PM(20) fraction was achieved using 3% rapeseed oil: 96.5% as compared with 75.6% for 3% water and 81.9% for 3% molasses. The drop height only had a significant effect on the generation of the PM(10) fraction, with it being lower at 20 cm than at 40 cm (P = .0261). (C) 2011 Elsevier Inc. All rights reserved."],["dc.identifier.doi","10.1016/j.jevs.2011.05.010"],["dc.identifier.isi","000297238400005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21639"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Inc"],["dc.relation.issn","0737-0806"],["dc.title","Effects of Three Different Liquid Additives Mixed with Whole Oats or Rolled Oats on the Generation of Airborne Particles from an Experimental Simulating Horse Feeding"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","383"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Journal of Equine Veterinary Science"],["dc.bibliographiccitation.lastpage","395"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Garlipp, Felix"],["dc.contributor.author","Hessel, Engel F."],["dc.contributor.author","van den Weghe, Herman F. A."],["dc.date.accessioned","2018-11-07T08:54:34Z"],["dc.date.available","2018-11-07T08:54:34Z"],["dc.date.issued","2011"],["dc.description.abstract","The aim of this study was to analyze the influence of horse manure added to different bedding materials on the generation of gases (ammonia (NH3), nitrous oxide, carbon dioxide, methane, water vapor) from deep litter bedding under standardized laboratory conditions. Two different types of straw (wheat and rye) and wood shavings were analyzed. The deep litter (substrate) was made of 25 kg of the respective bedding material, 60 kg horse feces, and 60 L ammonium chloride solution (urea), and spread out in identical chambers over 19 days (n = 3). On days 1, 8, 15, and 19, total nitrogen, total carbon, and dry matter content of the substrate, as well as the pH in 500-g samples, were measured along with. At the end of each test period, the nitrite nitrogen, nitrate nitrogen, and ammonium nitrogen contents of the leachate were analyzed. The wheat straw substrate emitted the highest concentration of NH3 (4.31 mg/m(3); P < .0001) and the wood shavings substrate emitted the lowest (1.73 mg/m(3); P < .0001); the rye straw substrate generated 3.05 mg/m(3). In addition, significant differences occurred during days 1 to 3 with respect to the generation of the gases NH3, methane, nitrous oxide, carbon dioxide, and water vapor, and after the opening of the chamber on day 15. The nitrogen losses through the leachate occurred mainly in the form of nitrate, where the leachate from the wheat straw substrate had a significantly higher amount of nitrate nitrogen (44.56 mg) as compared with the leachates of the rye straw (14.49 mg; P <= .0001) and the wood shaving substrates (22.62 mg; P = .0010). (C) 2011 Elsevier Inc. All rights reserved."],["dc.identifier.doi","10.1016/j.jevs.2011.01.007"],["dc.identifier.isi","000293311400006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22699"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Inc"],["dc.relation.issn","0737-0806"],["dc.title","Characteristics of Gas Generation (NH3, CH4, N2O, CO2, H2O) From Horse Manure Added to Different Bedding Materials Used in Deep Litter Bedding Systems"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","665"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Journal of Equine Veterinary Science"],["dc.bibliographiccitation.lastpage","674"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Hessel, Engel F."],["dc.contributor.author","Garlipp, Felix"],["dc.contributor.author","van den Weghe, Herman F. A."],["dc.date.accessioned","2018-11-07T11:25:01Z"],["dc.date.available","2018-11-07T11:25:01Z"],["dc.date.issued","2009"],["dc.description.abstract","Among other factors (eg, bedding material, roughage), feed has an important effect on the airborne particle concentration in the stable air, in particular directly in the breathing zone of the horse during feeding. Therefore, this study was designed to analyze and compare the generation of different airborne particle fractions of diverse feed types and feed processing techniques under standarized laboratory conditions. Oats and barely as well as two commercially formulated ready-prepared pellets and two commercially formulated ready-prepared mixes were analyzed. Oats were subjected to four different forms of processing (whole uncleaned, whole cleaned, rolled uncleaned, rolled cleaned), barley was subjected to steam flaking in addition to the same forms of processing as oats. In total, 13 feeds were analyzed. Airborne particle concentrations were detected online with a gravimetrically measuring analyzer that was equipped successively with different inlets to measure the particle fractions PM 1, PM 2.5, PM 10, and PM 20. The measurements were carried out in a closed chamber (1 x 1 x 1.5 m) including a bowl (diameter = 0.5 m), which stimulated the trough. The sample inlet was situated at a height of 1.0 m above the bowl. Rolling oats and barley led to a significantly increased generation of the PM 20 fraction and a significantly decreased generation of the PM 2.5 fraction. The mechanical cleaning of oat and barley brings a clear decrease in dust generation from straights whether they are left whole or are rolled after cleaning. A consideratble reduction in dust generation can be achieved if steam-flaked barely or commercially prepared feeds are used."],["dc.identifier.doi","10.1016/j.jevs.2009.07.013"],["dc.identifier.isi","000270370800006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56542"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Inc"],["dc.relation.issn","0737-0806"],["dc.title","Generation of Airborne Particles from Horse Feeds Depending on Type and Processing"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","545"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Journal of Equine Veterinary Science"],["dc.bibliographiccitation.lastpage","559"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Garlipp, Felix"],["dc.contributor.author","Hessel, Engel F."],["dc.contributor.author","van den Hurk, Matthieu"],["dc.contributor.author","Timmerman, Mark F."],["dc.contributor.author","van den Weghe, Herman F. A."],["dc.date.accessioned","2018-11-07T08:38:36Z"],["dc.date.available","2018-11-07T08:38:36Z"],["dc.date.issued","2010"],["dc.description.abstract","Four different types of bedding materials (wheat straw, wood shavings, hemp shives, flax shives) and two roughages (hay, haylage) were treated using an air-driven particle separation technology The airborne particle and mold generation of both treated and untreated samples were then analyzed under standardized laboratory conditions In addition, samples of all the treated materials were stored for 8 weeks either in a pressed or incoherent form and then analyzed again for their ability to generate airborne particles The airborne particle concentrations were detected online with the gravimetrically measuring analyzer tapered element oscillating microbalance (TEOM) 1400a that was equipped successively with different inlets to measure the particle fractions PM(20), PM(10), PM(2 5), and PM(1 0) (PM = Particulate matter) The particle separation resulted in a reduction in the airborne particle (PM(20)) generation in all materials hay 49 16 to 22 79 mg/m(3) (53 6%), haylage 28 57 to 25 04 mg/m(3) (12 3%), wood shavings 141 68 to 15 04 mg/m(3) (89 4%) wheat straw 143 08 to 22 97 mg/m(3) (89 9%), flax 135 11 to 53 31 mg/m(3) (60 5%), and hemp 63 67 to 17 64 mg/m(3) (72 3%) The 8 week storage of the treated materials as compressed materials led to a renewed significant increase in the airborne particle (PM(10)) concentration in the haylage (+29 9%), wheat straw (+104 0%), wood shavings (+40 4%), and the hemp shives (+30 7%) Storage of the incoherent materials caused a significant increase in these particles only in the wheat straw (+44 2%) The separation treatment reduced the mold production by 92 4% in the wood shavings 88 0% in the wheat straw, and 85 8% in the hay"],["dc.identifier.doi","10.1016/j.jevs.2010.09.005"],["dc.identifier.isi","000284243600020"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18801"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Inc"],["dc.relation.issn","0737-0806"],["dc.title","The Influence of a Particle Separation Technology on the Generation of Airborne Particles from Different Roughages and Bedding Materials Used for Horses"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]