Abel, Hansjörg

[["dc.bibliographiccitation.firstpage","90"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","The Science of Nature"],["dc.bibliographiccitation.lastpage","93"],["dc.bibliographiccitation.volume","91"],["dc.contributor.author","Gaye-Siessegger, Julia"],["dc.contributor.author","Focken, Ulfert"],["dc.contributor.author","Abel, Hansjoerg"],["dc.contributor.author","Becker, K."],["dc.date.accessioned","2018-11-07T10:51:31Z"],["dc.date.available","2018-11-07T10:51:31Z"],["dc.date.issued","2004"],["dc.description.abstract","Although stable isotope ratios in animals have often been used as indicators of the trophic level and for the back-calculation of diets, few experiments have been done under standardized laboratory conditions to investigate factors influencing delta(15)N and delta(13)C values. An experiment using Nile tilapia [Oreochromis niloticus (L.)] was therefore carried out to test the effect of different dietary protein contents (35.4, 42.3, and 50.9%) on delta(15)N and delta(13)C values of the whole tilapia. The fish were fed the isoenergetic and isolipidic semi-synthetic diets at a relatively low level. delta(15)N and delta(13)C values of the lipid-free body did not differ between the fish fed the diets with different protein contents, but the trophic shift for N and C isotopes decreased with increasing protein accretion in the individual fish, for N from 6.5parts per thousand to 4parts per thousand and for C in the lipid-free body from 4parts per thousand to 2.5parts per thousand. This is the first study showing the strong influence of the individual protein balance to the degree to which the isotopic signature of dietary protein was modified in tissue protein of fish. The extrapolation of the trophic level or the reconstruction of the diet of an animal from stable isotope ratios without knowledge of the individual physiological condition and the feeding rate may lead to erroneous results."],["dc.identifier.doi","10.1007/s00114-003-0496-2"],["dc.identifier.isi","000189206300006"],["dc.identifier.pmid","14991147"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/48911"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0028-1042"],["dc.title","Individual protein balance strongly influences delta N-15 and delta C-13 values in Nile tilapia, Oreochromis niloticus"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","67"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","ARCHIVES OF ANIMAL NUTRITION-ARCHIV FUR TIERERNAHRUNG"],["dc.bibliographiccitation.lastpage","91"],["dc.bibliographiccitation.volume","56"],["dc.contributor.author","Rodehutscord, M."],["dc.contributor.author","Abel, Hansjoerg"],["dc.contributor.author","Friedt, Wolfgang"],["dc.contributor.author","Wenk, C."],["dc.contributor.author","Flachowsky, Gerhard"],["dc.contributor.author","Ahlgrimm, H. J."],["dc.contributor.author","Johnke, B."],["dc.contributor.author","Kuhl, R."],["dc.contributor.author","Breves, Gerhard"],["dc.date.accessioned","2018-11-07T10:30:44Z"],["dc.date.available","2018-11-07T10:30:44Z"],["dc.date.issued","2002"],["dc.description.abstract","Consequences of the ban of meat and bone meal (MBM) and animal fat with regard to livestock feeding, cropping, ecology and economy where investigated with an inter-dsciplinary approach for Germany and the European Union. Calculations were made for different production systems with pigs and poultry on the basis of statistical data for the production and for the feed markets as well as from requirement data for the respective species and production system. (I.) The ban of MBM from feeding caused a need for alternative protein sources. If all the amount of protein from MBM is to be replaced by soybean meal, in Germany and the EU about 0.30 and 2.30 . 10(6) t would be needed each year (supplementary amino acids not considered). Alternatively, doubling the grain legume acreage in Germany to about 420,000 ha would supply a similar amount of protein. A wider application of phase feeding with adjusted dietary amino acid concentrations, however, would allow for saving protein to an extent which is similar to the amount of protein that was contributed by MBM in recent years. Thus, the ban is a minor problem in terms of ensuring amino acid supply. (2.) However, alternative plant ingredients cannot compensate for the gap in P supply that is caused by the ban. An additional demand for inorganic feed phosphates of about 14,000 and I 10,000 t per year is given in Germany and the EU, respectively. So far, this gap is filled almost completely by increased mining of rock phosphates. Alternatively, a general application of microbial phytase to all diets would largely fill this gap. Until the ban, MBM contributed to 57% of the supplementation of P that was needed for pigs and poultry. The ban of MBM makes large amounts of P irreversibly disappearing from the food chain. (3.) Energy from slaughter offal and cadavers can be utilized in different technologies, in the course of which the efficiency of energy utilisation depends on the technology applied. It is efficient in the cement work or rotation furnace if heat is the main energy required. In contrast, the energetic efficiency of fermentation is low. (4.) Incineration or co-incineration of MBM and other by-products causes pollution gas emissions amounting to about 1.4 kg CO2 and 0.2 kg NOx per kg. The CO2 production as such is hardly disadvantageous, because heat and electrical energy can be generated by the combustion process. The prevention of dangerous gaseous emissions from MBM burning is current standard in the incineration plants in Germany and does not affect the environment inadmissibly. (5.) The effects of the MBM ban on the price for compound feed is not very significant. Obviously. substitution possibilities between different feed ingredients helped to exchange MBM without large price distortions. However, with each kg MBM not used in pig and poultry feeding economic losses of about 0.14 euro have to considered. In conclusion. the by far highest proportion of raw materials for MBM comes as by-products from the slaughter process. Coming this way, and assuring that further treatment is safe from the hygienic point of view, MBM and animal fat can be regarded as valuable sources of amino acids. minerals and energy in feeding pigs and poultry. Using them as feedstuffs could considerably contribute to the goal of keeping limited nutrients, phosphorus in particular. within the nutrient cycle and dealing responsible with limited resources."],["dc.identifier.doi","10.1080/00039420214180"],["dc.identifier.isi","000178251300001"],["dc.identifier.pmid","12389223"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43937"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0003-942X"],["dc.title","Review article - Consequences of the ban of by-products from terrestrial animals in livestock feeding in Germany and the European Union: Alternatives, nutrient and energy cycles, plant production, and economic aspects"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","71"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY"],["dc.bibliographiccitation.lastpage","77"],["dc.bibliographiccitation.volume","146"],["dc.contributor.author","Gaye-Siessegger, Julia"],["dc.contributor.author","Focken, Ulfert"],["dc.contributor.author","Abel, Hansjoerg"],["dc.contributor.author","Becker, K."],["dc.date.accessioned","2018-11-07T11:06:18Z"],["dc.date.available","2018-11-07T11:06:18Z"],["dc.date.issued","2007"],["dc.description.abstract","The quality of dietary protein is an important factor influencing the growth performance of fish. To evaluate the quality of protein, the variables commonly studied are the composition of the essential amino acids, the digestibility and the protein use efficiency. The goal of the present experiment was to test the effect of the dietary non-essential amino acid composition on the growth of Nile tilapia (Oreochronds niloticus). The fish were fed three purified diets differing only in their non-essential amino acid composition. The influence of the experimental diets on the growth performance, on the activity of enzymes involved in the amino acid metabolism, aspartate aminotransferase (ASAT) and alanine aminotransferase (ALAT), and on whole body delta(15)N values was investigated. Body mass, lipid, protein and energy gain differed significantly between the feeding groups. The activity of ASAT in the whole liver was significantly higher in fish with a positive protein balance compared to fish which lost protein. Whole body delta(15)N values of fish were negatively correlated with their body mass gain. Despite the poor utilisation of synthetic amino acids, the experiment indicates the importance of the dietary non-essential amino acid composition for the growth performance of fish. The study reveals the possibility to trace the utilisation of synthetic amino acids by determining the isotopic composition of dietary amino acids and tissues or whole bodies of animals. (c) 2006 Elsevier Inc. All rights reserved."],["dc.identifier.doi","10.1016/j.cbpa.2006.09.025"],["dc.identifier.isi","000244583100007"],["dc.identifier.pmid","17157045"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52273"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Inc"],["dc.relation.issn","1095-6433"],["dc.title","Influence of dietary non-essential amino acid profile on growth performance and amino acid metabolism of Nile tilapia, Oreochromis niloticus (L.)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","606"],["dc.bibliographiccitation.issue","3-4"],["dc.bibliographiccitation.journal","Veterinary Parasitology"],["dc.bibliographiccitation.lastpage","618"],["dc.bibliographiccitation.volume","205"],["dc.contributor.author","Das, Guerbuez"],["dc.contributor.author","Abel, Hansjoerg"],["dc.contributor.author","Savas, Turker"],["dc.contributor.author","Sohnrey, Birgit"],["dc.contributor.author","Gauly, Matthias"],["dc.date.accessioned","2018-11-07T09:33:37Z"],["dc.date.available","2018-11-07T09:33:37Z"],["dc.date.issued","2014"],["dc.description.abstract","In modern husbandry systems, feed rations for laying hens may contain high levels of dietary fibre, which may only be fermented intestinally. Depending on fermentation properties, the type of dietary fibre may influence the intra-caecal environment constituting the predilection site of Heterakis gallinarum. We investigated egg production dynamics and fecundity of H. gallinarum residing in different caecal environments induced through different types of dietary fibre. Growing layers were fed a standard (CON) or an insoluble(I-) or soluble- (S-) non-starch polysaccharides-(NSP) supplemented diet for the first 11 weeks (wk) of life in a twice-replicated experiment. At 3 wk of age, the birds were infected with 200 embryonated eggs of H. gallinarum. Starting from 3 wk post-infection (p.i.), individual daily total excreta were collected. The number of eggs per gram of faeces (EPG) was determined (N = 2240), and the number of eggs per day (EPD) were estimated. The birds were necropsied 8 wk p.i. and the worm burdens were quantified. The nematode began to lay eggs as early as 23 d.p.i. and thereafter laid on average 436 eggs/d. I-NSP- and S-SNP-supplemented diets expedited the onset of patency by approximately 5 days, and increased total egg excretion by 110% and 185%, respectively, due to higher worm counts. The latter diet (S-SNP) additionally increased total egg excretion by 94% due to enhanced fecundity. Longitudinally collected data showed that fecundity of the nematode (EPD/female) was relatively stable starting from the second week of the patent phase. Results suggest that NSP-induced enlargement of caeca favoured establishment of the nematode while effects of an intensified microbial fermentation through S-NSP were crucial for an enhancement in the worm fecundity. Based on the long-term data obtained from daily collections of total excreta in experimentally H. gallinarum-infected chickens, it is concluded that a diet enriched with pea bran as source of insoluble NSP increased worm egg production merely through elevated worm counts, whereas a diet supplemented with chicory root meal as source of soluble NSP elevated worm egg production through both increased worm counts, and more profoundly through enhanced fecundity. (C) 2014 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.vetpar.2014.08.008"],["dc.identifier.isi","000344425200025"],["dc.identifier.pmid","25200385"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32007"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1873-2550"],["dc.relation.issn","0304-4017"],["dc.title","Egg production dynamics and fecundity of Heterakis gallinarum residing in different caecal environments of chickens induced by fibre-rich diets"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","333"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","The Journal of Agricultural Science"],["dc.bibliographiccitation.lastpage","341"],["dc.bibliographiccitation.volume","146"],["dc.contributor.author","SENG, M."],["dc.contributor.author","BONORDEN, S."],["dc.contributor.author","NISSEN, J."],["dc.contributor.author","ISSELSTEIN, J."],["dc.contributor.author","ABEL, H."],["dc.date.accessioned","2013-05-30T13:30:52Z"],["dc.date.accessioned","2021-10-27T13:21:14Z"],["dc.date.available","2013-05-30T13:30:52Z"],["dc.date.available","2021-10-27T13:21:14Z"],["dc.date.issued","2008"],["dc.description.abstract","Grassland forbs are important constituents of swards under low-input management. The hypothesis tested was that herbage from unfertilized swards consisting of a mixture of perennial ryegrass (Lolium perenne), white clover (Trifolium repens), dandelion (Taraxacum officinale) and ribwort (Plantago lanceolata) (treatment GCF) would exert a significant effect on the composition and quality of silage for rumen microbes compared with herbage from nitrogen-fertilized (50 kg N/ha/cut) pure ryegrass swards (treatment GN) or unfertilized ryegrass white clover swards (treatment GC). GCF had average proportions of clover and forb of 0.21 and 0.58, respectively. The crude protein and fibre fractions declined and non-fibrous carbohydrates (NFC) increased from GN over GC to GCF. Irrespective of cutting date (spring and summer), GN showed extremely high ammonia (NH3) concentrations, whereas GCF resulted in the highest concentrations of lactic acid coinciding with the lowest contents of butyric acid and ethanol. The ratios between the soluble and less soluble N fractions decreased in the order GN>GC>GCF. A similar sequence was observed in RUSITEC for the apparent disappearance rates of crude protein and fibre fractions. The concentration of NH3-N in the fermenter fluid declined in the order GN>GC>GCF. GCF produced less short-chain fatty acids (SCFA) than GN and GC. Microbial nitrogen (MN) flow was not significantly different between treatments but tended to decline in the order GN>GC>GCF, whereas the proportion of MN originating from NH3-N increased inversely. The efficiency of microbial protein synthesis was unaffected by the different silages. It is concluded that forb-rich swards are suitable for the preparation of high quality silages. There is a need for further investigation into postruminal availability and suitable supplementation for such silages in order to fully exploit their potential for improving the efficiency of nitrogen utilization in ruminant nutrition."],["dc.identifier.doi","10.1017/S0021859607007563"],["dc.identifier.fs","476104"],["dc.identifier.gro","3149204"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9065"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/92002"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1469-5146"],["dc.relation.issn","0021-8596"],["dc.relation.orgunit","Fakultät für Agrarwissenschaften"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","microbial fermentation; RUSITEC"],["dc.title","Fermentation patterns and nutrient contents of forb-containing silages and their effects on microbial fermentation in the artificial rumen system RUSITEC"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","99"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","British Journal of Nutrition"],["dc.bibliographiccitation.lastpage","104"],["dc.bibliographiccitation.volume","95"],["dc.contributor.author","Abel, H."],["dc.contributor.author","Schröder, B."],["dc.contributor.author","Lebzien, P."],["dc.contributor.author","Flachowsky, G."],["dc.date.accessioned","2021-06-01T10:51:10Z"],["dc.date.available","2021-06-01T10:51:10Z"],["dc.date.issued","2006"],["dc.description.abstract","Biotin is required by rumen microbes for efficient fermentation. To evaluate the role of protozoa in ruminal biotin metabolism, five diets composed of grass hay or of grass hay/cereal grain mixtures were supplied to faunated or defaunated RUSITEC fermenters. In the mixed diets, hay was replaced to 33:67 or 67:33 w/w on an air-dried basis by either wheat or maize grain in order to simulate different cellulolytic and amylolytic fermentation conditions. Defaunation increased SCFA production, whereas NH 4 concentration and the release of CH 4 were reduced. Biotin input declined when cereal grain was used to replace the hay. With the exception of the high-wheat treatment, defaunated fermenters yielded higher biotin outputs than faunated fermenters. The biotin balance, calculated as the difference between the total biotin output (biotin in the solid residue contained in the nylon bags after fermentation plus the biotin in the effluent) and the biotin input with the feed, was negative for all the dietary treatments apart from fermenters supplied with the high-maize diet. It was less negative or, in the case of the high-maize diets, more positive for defaunated compared with faunated fermenters. It was concluded that, under normal faunated conditions, protozoa directly utilise or indirectly affect the bacterial synthesis and/or utilisation of biotin. With diets of a high fermentation potential, as realised with the high-wheat diet, protozoa prevent the development of a bacterial population that would utilise high or synthesise low amounts of biotin."],["dc.identifier.doi","10.1079/BJN20051607"],["dc.identifier.isi","000234936600012"],["dc.identifier.pmid","16441921"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/86915"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Cabi Publishing"],["dc.relation.eissn","1475-2662"],["dc.relation.issn","0007-1145"],["dc.title","Effects of defaunation on fermentation characteristics and biotin balance in an artificial rumen-simulation system (RUSITEC) receiving diets with different amounts and types of cereal"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","972"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of Animal Science"],["dc.bibliographiccitation.lastpage","981"],["dc.bibliographiccitation.volume","88"],["dc.contributor.author","von Heimendahl, E."],["dc.contributor.author","Breves, Gerhard"],["dc.contributor.author","Abel, Hansjoerg"],["dc.date.accessioned","2018-11-07T08:45:30Z"],["dc.date.available","2018-11-07T08:45:30Z"],["dc.date.issued","2010"],["dc.description.abstract","The hypothesis examined in this experiment was that, because of intensive selection for greater daily BW gains and efficient utilization of concentrated low-fiber diets, modern pig breeds differ from old local breeds in their physiological ability to respond to soluble dietary fiber. Thus, the old local breeds, Schwaebisch Haellisches Schwein (SH) and Bunte Bentheimer (BB), and a modern crossbred pig (CB) were used in metabolism trials to study fiber-related digestion, including microbial hindgut fermentation, by applying a colon simulation technique (Cositec) and measuring intestinal glucose transport in Ussing chambers. A basal diet or basal plus 20% dried sugar beet pulp (SBP) as a soluble fiber source was fed to 6 pigs/breed in a 2 x 3 factorial arrangement of treatments. Four pigs of each breed per treatment were used for intestinal anatomical measurements at the end of the metabolism trials. The pigs had an initial average BW of 33.9 perpendicular to 3.7 kg. The basal diet was formulated to meet 80% of energy and 100% of nutrient requirements for pigs with 700 g of ADG. Feeding the SBP diet reduced total intestinal tract, but it increased colon length, water-holding capacity of the digesta, and fecal bulk (P < 0.01). The digestibility of OM, CP, and ether extract decreased, whereas that of NDF and ADF increased, by SBP (P = 0.001). Pigs receiving SBP excreted less urinary N and retained more N (P = 0.001). The fecal proportions of undigested dietary and water soluble N increased and those of bacterial and endogenous debris N decreased (P < 0.05) in SBP-fed pigs. The SH pigs had lighter empty cecum weight, shorter colons, and less NDF digestibility than BB and CB pigs (P < 0.05). Fecal N excretion did not differ (P = 0.659) among breeds, but SH pigs excreted more urinary N (P = 0.001) than the other breeds. In Cositec, OM, NDF, and ADF disappearance rates from cecal chyme of SBP-fed pigs increased (P < 0.05) irrespective of pig breed. Cecal chyme of SBP-fed BB pigs produced more VFA with a smaller proportion of propionate and a larger acetate to propionate ratio than chyme of SBP-fed SH and CB pigs. The intestinal epithelial glucose transport was greater for ileal than for jejunal tissues (P < 0.001) but was not influenced by diet and pig breed. In conclusion, the modern and intensely selected pig breed can utilize SBP fiber as efficiently as the old pig breeds under the present experimental conditions."],["dc.identifier.doi","10.2527/jas.2009-2370"],["dc.identifier.isi","000275001600018"],["dc.identifier.pmid","19933429"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/20459"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Soc Animal Science"],["dc.relation.issn","0021-8812"],["dc.title","Fiber-related digestive processes in three different breeds of pigs"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","26"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Journal of Animal Physiology and Animal Nutrition"],["dc.bibliographiccitation.lastpage","35"],["dc.bibliographiccitation.volume","86"],["dc.contributor.author","Abel, Hansjoerg"],["dc.contributor.author","Burghard, G."],["dc.date.accessioned","2018-11-07T10:32:12Z"],["dc.date.available","2018-11-07T10:32:12Z"],["dc.date.issued","2002"],["dc.description.abstract","A basal control mixture of barley, soy bean meal and soy bean oil was replaced by 25% of the new field bean-cultivar 'Divine' and the 'resulting two mixtures were supplemented with minerals, trace elements, vitamins and amino acids according to the ideal protein concept. The control diet was adjusted with DL-methionine (DL-Met), the field bean mixture either with DL-Met or DL-methionine-hydroxyanalogue (DL-MHA) assuming biological equivalence on a molar basis for both supplements. The three experimental diets were fed to growing pigs (35-40 kg bwt.). Spontaneous urine samples were analysed separately for determining parameters that characterize the acid-base status of the pigs. There were no significant differences between experimental groups in nutrient digestibilities. The level of bacterially fermentable substances was increased in the diets containing field beans. The field beans contained 14 mg ME/kg DM. There were no significant (p < 0,05) differences in N- and mineral-retentions (Ca, P, Na, K) between the treatments. The stronger alkalinity found in urine after feeding the field bean mixtures resulted from a higher electrolyte balance of the diet."],["dc.identifier.doi","10.1046/j.1439-0396.2002.00353.x"],["dc.identifier.isi","000174271000003"],["dc.identifier.pmid","11906570"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/44293"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Blackwell Verlag Gmbh"],["dc.relation.issn","0931-2439"],["dc.title","Investigations in growing pigs on the feeding value of a new cultivar of field beans (Vicia faba L.) supplemented with DL-methionine or DL-methionine-hydroxyanalogue"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","117"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY"],["dc.bibliographiccitation.lastpage","124"],["dc.bibliographiccitation.volume","140"],["dc.contributor.author","Gaye-Siessegger, Julia"],["dc.contributor.author","Focken, Ulfert"],["dc.contributor.author","Abel, Hansjoerg"],["dc.contributor.author","Becker, K."],["dc.date.accessioned","2018-11-07T08:36:30Z"],["dc.date.available","2018-11-07T08:36:30Z"],["dc.date.issued","2005"],["dc.description.abstract","To test whether the measurement of selected enzyme activities could be used to estimate more precisely the trophic shift of C isotopes, Nile tilapia (Oreochromis niloticus) were fed semi-synthetic diets differing in their lipid contents (1.7%, 5.0%, 10.8% and 20.0%). The diets were formulated to contain the same amount of nitrogen and metabolizable energy and were made from casein, wheat starch, corn germ oil supplemented with vitamins, minerals and L-arginine. The influence of the different diets on the activity of two lipogenic enzymes, ATP-citrate lyase and malic enzyme, on delta(13)C values in the whole fish, the liver and their correlation was investigated. There was a strong positive correlation between delta(13)C values in the lipids of whole fish and those of their livers. The activities of lipogenic enzymes increased significantly with increasing trophic shift of C isotopes (Deltadelta(13)C(dict-fish) values) in the lipids. If the relationship between trophic shift and enzyme activity can be confirmed in situations where feed quantity and quality are not known, the determination of enzyme activities would enable better estimates of the trophic shift to be made thus significantly improving back-calculation of diets from stable isotope data. (C) 2004 Elsevier Inc. All rights reserved."],["dc.identifier.doi","10.1016/j.cbpb.2004.11.011"],["dc.identifier.isi","000226964400013"],["dc.identifier.pmid","15664320"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18324"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Inc"],["dc.relation.issn","1095-6433"],["dc.title","Improving estimates of trophic shift in Nile tilapia, Oreochromis niloticus (L.), using measurements of lipogenic enzyme activities in the liver"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","65"],["dc.bibliographiccitation.lastpage","69"],["dc.contributor.author","Seng, M."],["dc.contributor.author","Isselstein, Johannes"],["dc.contributor.author","Bonorden, S."],["dc.contributor.author","Abel, Hansjörg"],["dc.date.accessioned","2017-09-07T11:51:18Z"],["dc.date.available","2017-09-07T11:51:18Z"],["dc.date.issued","2004"],["dc.identifier.gro","3147948"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5283"],["dc.language.iso","en"],["dc.notes.preprint","yes"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.publisher","Eigenverlag"],["dc.publisher.place","Göttingen"],["dc.relation.eventend","2004-10"],["dc.relation.eventlocation","Soest"],["dc.relation.eventstart","2004-10"],["dc.relation.iserratumof","yes"],["dc.title","Rumen Degradable Protein of Silages, Made of Herbage from Differently Managed Grassland, in Rumen simulation Technique (RUSITEC)"],["dc.type","conference_paper"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]