Contents Page Review lecture Minimal Total Discomfort; an integrating framework for food intake and 13-20 selection J. Michael Foibes, Institute of Integrative and Comparative Biology, University of Leeds, Leeds LS2 9JT, UK. Hormonal control of food intake 21-27 Thomas A. Lutz, Institute of Veterinaiy Physiologe, Vetsuisse Faculty Univeisity of Zürich, Winterthurerstrasse 260; and Zürich Center for Integrative Human Physiology, University of Zürich; 8057 Zürich, Switzerland Amino acids and nitrogen 1. Dietary arginine supplementation of primiparous sows during early 28 gestation increases litter size and alters fetal muscle über development J. Berard, J-Y. Deru and G. Bee - Posieux 2. Optimum threonine: lysine ratio in diets for growing pigs: An 29 evaluation of lherature data Britta Blank and A. Susenbeth - Kiel 3. The impactof dietary Leucineoversupply atmarginallevelsof Valine 30 on animal Performance, blood metabolites, and catabolk key enzymes in weaned pigs M. K. Wiltafsky and F. X. Roth - Freising-Weihenstephan 4. Chicken studiesto improveprocedure and database for evaluation of 31 the optimal dietary amino acid ratio Jaqueline Farke, C. Wecke and F. Liebert - Göttingen 5. Investigations on amino acid supply in diets for young stallions and 32 effects of lysine supplementation on growth and selected blood Parameters D. Koslowski and F. Liebert - Göttingen 6. Influence of maternal low and high protein diets during pregnancy in 33 young sows on ghtcose metabofism of their offspring Solvig Görs, Iris S. Lang, P. Junghans, U. Hennig, B. Stabenow, F. Schneider, W. Otten, Charlotte Rehfeldt and Cornelia C. Metges - Dummerstorf 7. High protein dietfed during pregnancy and lactationaffects maternal 34 body mass, blood parameters and litter Performance in mice Marzena Kucia, Martina Langhammer, Solvig Görs, Elke Albrecht, M. Demo, G. Nürnberg and Cornelia C. Metges - Dummerstorf 8. Investigations on muscle development (M. extensor digitorum 35 communis) depending on lysine suppry in diets for young stallions D. Koslowski, F. Liebert and J. Thielebein - Göttingen/Halle (Saale)

Bibliografische Informationen digitalisiert durch http://d-nb.info/993159583 9. Preference of broiler chickens for various methionine supply in low 36 protein diets Brigitte R. Paulicks, P. Prechtl, A. Lemme and Barbara M. Böhmer - Freising-Weihenstephan/Hanau 10. Response of Ross 708 to enhanced balanced protein supply fed in 37 subsequent phases O. Akinde and A. Lemme - Hanau 11. Useoftheautomatisedmethodof Dumas (VARIO MAX CNS®) for 38 routine analysis of crude protein Content in feed (concentrates) as well as in samples of ileal chyme of pigs in comparison to the established Kjeldahl method Anne Mößeler, Sonka Zantz, Katja Krause, Simone Möbus, P. Rust and J. Kamphues - Hannover

Minerals and trace elements 12. Effectsofzeolhe A on rumen fermentation and phosphorus 39 metabolism in dairy cows Hilde Grabherr, M. Spolders, P. Lebzien, L. Hüther, G. Flachowsky and M. Fürll - Braunschweig/Leipzig 13. Effect of various feed iodine supplementations, rapeseed meal in the 40 ration and the iodine species on iodine Status and -excretion of dairy cows K. Franke, U. Meyer, H. Wagner, H. O. Hoppen and G. Flachowsky - Braunschweig/Kulmbach/Hannover 14. Infhience of roughage/concentrate ratio on the effect of urinary 41 acidifiers in ponies is independent of dietary Ca/P ratio Ellen Kienzle, L. Berchtold and N. Zorn - München 15. Chromium yeast supplementation on postprandial giucose and insulin 42 profiles in insulin-resistant ponys Ingrid Vervuert, Barbara Oßwald and M. Coenen - Leipzig 16. Effects of potassium dependent Variation in dietary cation balance on 43 acid base and nhrogen balance in pigs Susann Engelking and M. Coenen - Leipzig 17. Low phosphorus and normal calchim intake results in extremely 44 bowed legs in growing dogs which are reversible by phosphorus repletion Britta Dobenecker and Ellen Kienzle - München 18. Effect of dietary rare earth elements (REE) on growth Performance of 45 fattening buDs Annett Schwabe, U. Meyer and G. Flachowsky - Braunschweig 19. Activity of seknium dependent GPxl and GPx3 in growing male lambs 46 fed different levels of Se J. Fischer, Erika Most and J. Pallauf- Giessen 20. Effects of high dietary iodine supply as iodide or iodate on mRNA 47 expressk» of aurker genes associated to fat metabolism and oxidative stress in abdominal fat tissae of fattening pigs K. Schedfc, V. Wagner, Q. Li, T. Ettle and W. Windisch - Wien 21. Investigations on content and distribution of iodine in freshwater fish 48 after supplementation of maximum iodine content in fish feed: a fidd study Sylvia von Rosenberg, Stefanie Daub and W. A. Rambeck - München 22. Impact of rapeseed cake supplementation and staggered feed iodine 49 concentrations on the iodine content of hen eggs Anna S. Röttger, Ingrid Halle, H. Wagner, Inka Niehoff, G. Flachowsky - Braunschweig/Kulmbach 23. Influence of two different selenhim sources on growth of broiler 50 chickens Ingrid Halle and H. Schenkel - Braunschweig/Stuttgart-Hohenheim Energetics 24. Differences in energy expenditure, physical activity and feeding 51 behaviour between grazing cows and cows fed grass indoors Luzia D. Kaufmann, A. Münger, M. Rerat, P. Junghans, Solvig Görs, Cornelia C. Metges, Frigga Dohme - Posieux/Dummerstorf 25. Metabolie adaptations and hepatk gluconeogenesis in response to 52 chronic intravenous glucose infusions in midlactating dairy cows B. Al-Trad, Kerstin Reisberg, T. Wittek, A. Alkaassein, G. Gabel, M. Füril and J. R. Aschenbach - Leipzig 26. Collectively regulated liver enzymes in periparturient and feed 53 restricted dairy cows B. Kuhla, D. Albrecht, K. Duske, A.-K. Langhof, H. M. Hammon, S. Kuhla and Cornelia C. Metges-Dummerstorf/Greifswald 27. Effects of lirnhed concentrate feeding on growth and blood and serum 54 variables in dairy calves J. D. Lohakare, H. van de Sand, K. Gerlach, M. Pries, M. Mielenz, H. Sauerwein and K.-H. Südekum - //Münster 28. Effects of colostrum versus formula feeding on postprandial hepatk 55 ghicose metabolism in neonatal calves Julia Steinhoff, R. M. Bruckmaier and H. M. Hammon - Dumme rstorf/Bem 29. Milk yidd and body condition loss in early lactation in a dairy and a 56 dual purpose cow breed Dagmar Schaub, Karen Aulrich and Kerstin Barth - Trenthorst 30. Intestinal ghicose absorption and hepatic ghicose metabolism in goat 57 kids fed casein- or soy protein-based milk diets Ulrike Schönhusen, Anne Flöter, Juha Steinhoff, S. Kuhla, K. Huber, P. Junghans, H. M. Hammon and Cornelia C. Metges - Dummerstorf/ Hannover 31. Activity of hepatk but not skeletal muscle carnitine 58 palmhoyltransferase enzyme is depressed by intravenous ghicose infusions in lactating dairy cows B. Al-Trad, Kerstin Reisberg, G. Gabel, T. Wittek, M. Füril and J. R. Aschenbach - Leipzig 32. Endocrine changes and postprandial hepatk ghicose metabolism in 59 preterm and term born calves Julia Steinhoff, R. M. Bruckmaier and H. M. Hammon - Dummerstorf/Bern

Undesired materials 33. Investigations in order to establish a concept for using dioxin exposed 60 floodplains by beef cattle under food safety aspects Venja Taube, Katrin Gude, Elke Bruns-Weller and J. Kamphues - Hannover/Oldenburg 34. Secondary metabolitesof/i./w/n/gafws in grass and maize silages 61 J. Ostertag, J. Bauer, H. Spiekers, W. Richter and K. Meyer - Freising- Weihenstephan/Grub 35. Bioavailability of the Fusarium toxin deoxynivalenol (DON) f rom 62 contaminated wheat straw and chaff in comparison with its grain D. Rohweder, Hana Valenta, S. Sondermann, M. Schollenberger, W. Drochner and S. Dänicke - Braunschweig/Stuttgart-Hohenheim 36. Effects of deoxynivalenol (DON) on lipopolysaccharide (LPS) 63 stimulated and unstimulated primary porcine hepatocytes Susanne Döll, J. Schrickx, S. Dänicke and Johanna Fink-Gremmels - Braunschweig/Utrecht 37. Effects of Deoxynivalenol (DON) and its derivative DON-surfonate 64 (DONS) on porcine peripheral mononuclear cells (PMNC) S. Dänicke, Tanja Goyarts, Hana Valenta, Marita Beyer and H.-U. Humpf - Braunschweig/Münster 38. Investigations to minimise dioxin contamination in lamb/mutton 65 production when using exposed river banks by grazing sheep Katrin Gude, Venja Taube, Elke Bruns-Weller and J. Kamphues - Hannover/Oldenburg 39. Studies on the accumulation of arsenic in animal tissues after long-time 66 arsenic supplementation in ewes Ricarda Krüger, Jeanette Boguhn, J. Breuer and M. Rodehutscord - Halle (SaaleyStuttgart-Hohenheim 40. Mycotoxin screening in healthy cows and cows with abomasal 67 displacement A. Alkaassem, S. Dänicke and M. Füril - Leipzig/Braunschweig Digestion 41. Comparative investigations on food comminution in berbivores - 68 faecal partkle size and influence of lactation Eva Schenk, Kerstin Eriinghagen, J. Hummel and K.-H. Südekum - Bonn 42. Do indrvidaalprotozoal species differ in tbeir effect ontbedigestionof 69 sheep? Johanna O. Zeitz, S. L. Amelchanka, T. Michatowski, K. Wereszka, M. Kreuzer and Carla R. Souva - Zürich/Jabkmna 43. Effect of potassium and insulin on the activity of abomasal smooth 70 muscles in vitro and on the fk»w rate of digesta in the duodenum of dairy cows Gesche Tuerck, Margit Ziegler, J. Rehage, P. Lebzien und Sabine Leonhard-Marek - Hannover/Braunschweig 44. Validationof anoveltechniqueforthemeasurementof thechewing 71 activity in horses Annette Zeyner, S. Quellmalz, Josefine Dill and O. Lengwenat - Rostock/Leipzig/Osnabrück/Hannover 45. Investigations on a shred whole acorns (Quercus pubescens) based dkt 72 on the paroid gland in pigkts M. G. Cappai, P. Wolf, V. Grosse Liesner, A. Kastner, G. Nieddu, W. Pinna and J. Kamphues - Sassari/Hannover 46. Investigations on particle sizes in different compartments of the 73 digestive tract of östliches (Struthio camdus) Julia Fritz, M. Clauss and Ellen Kienzle - München/Zürich 47. Effect of the kvd of concentrate in Fusarium-toxin contaminated 74 rations on ruminal fermentation in dairy cows B. Hildebrand, Jeanette Boguhn, S. Dänicke, P. Lebzien and M. Rodehutscord - Stuttgart-Hohenheim/Braunschweig 48. Influence of forage source and feed particle size of rations for 75 ruminants on the abundance of classical ruminal bacterial species in vitro Maren Witzig, Jeanette Boguhn and M. Rodehutscord - Halle (Saale)/ Stuttgart-Hohenheim 49. Effects of replacing conventional concentrate ingredknts by tomato 76 pomace and olive cake on digestibility and milk yidd of Awassi (fat- tailed) sheep Souheila Abbeddou, S. Rihawi, L. Iüiguez, Barbara Rischkowsky, H. D. Hess and M. Kreuzer - Zürich/Aleppo (Syrien) 50. Acid-base Status in rumen fiuid and urine of dairy Holstein cows - a 77 comparative study J. Kricziokat, T. Wittek and M. Füril - Leipzig 51. Investigations on cast production, energy and nutrient supply aswdl 78 as protein requirement in birds of prey (eagle owl, common bussard, kestrd falcon) Petra Wolf, Meike Lüdtke and J. Kamphues - Hannover Lipids and fatty acids 52. Comparison ofextruded and rawlinseedon thdr effects on ruminal 79 biobydrogenation of Knoknk acid, fibre digestibility and milk fatty acid profile in dairy cows Frigga Dohme and G. Bee - Posieux 53. Wbey Protein EmabionGelCompositeofSoybean and LinseedOibto 80 increase poly-unsaturated fatty acids in cow' milk A. M. van Vuuren, P. G. van Wikselaar, J. W. van Riel, A. Klop and J. A. H. P. Bastiaans- Lerystad/Zwolle 54. Does a supplementation of conjugated linoleic acids during early 81 lactation affect milk and milk component yields beyond the cessation of supplementation? Katrin Metzger-Petersen, M. Pries, H. van de Sand and K.-H. Südekum - Bonn/Münster/Kleve 55. Short-term effects of fish oil or soybean oil supplementation to a 82 starchy meal on postprandial glucose and insulin responses in healthy horses Ingrid Vervuert, Sara Klein and M. Coenen - Leipzig 56. Lack of infhience of n-3 polyunsaturated fatty acids in partu rition feed 83 on sow and piglet Performance A. Cools1, D. Maes, K. Goris, D. Bogaertsand G. P. J. Janssens - Ghent 57. Investigations on the rote of peroxisome proliferator-activated receptor 84 (PPAR) a in the metabolk adaptations during lactation K. Eder, Anke Gutgesell, Eileen Schmidt, Corinna Brandsch. Gabriele I. Stangl, F. Hirche and R. Ringseis - Halle (Saale) 58. A dietary conjugated linoleic acid mixture downregulates fatty acid 85 transporters in the mammary gland of lactating rats R. Ringseis, Anke Gutgesell and K. Eder - Halle (Saale) 59. Effects on fatty acid composition of milk fat due to dietary rumen- 86 protected conjugated linoleic acid during early lactation of cows T. Liermann. P. Möckel, G. Jahreis, Angelika-Maria Pfeiffer and F. J. Schwarz - Freising-Weihenstephan/Jena/Berlin 60. Comparison of emulsifying methods for linoleic acid and their 87 infhience on in vitro ruminal biohydrogenation and fermentation characteristics Ratchaneewan Khiaosa-Ard, F. Leiber, M. Kreuzer and Carla R. Soliva - Zürich 61. Involvement of TNFa in adipocyte metabolism and the interaction with 88 liver metabolism in dairy cows H. Anette van Dorland, H. Sadri, Isabelle Morel and R.M. Bruckmaier- Bem/Isfahan/Posieux 62. Comparative aspects of mRNA-expression in bovine fat tissue 89 L. Zapfe, L. Locher, N. Klöting, M. Kern, M. Blüher and M. Füril - Leipzig 63. Enrichment of RAW264.7 macrophages with essential 18-carbon fatty 90 acids affects both oxidative burst and produetion of immune modulatory cytokines Julia Schumann, B. Walloschke and H. Fuhrmann - Leipzig 64. Selenate and CLA isomers added to a diet modify the fatty acid 91 concentration in the Kver and femoral muscles of rats Marian Czauderna, J. Kowakzyk, K. M. Niedzwiedzka, L. Leng and K. Cobanova - Jablonna/Kosice 65. Seleniaedyeast and CLA isomer» added toa diet modrfy the fatty acid 92 coBcentratkm in the Kver and femoral muscles of rats Marian Czauderna, J. Kowalczyk, K. M. Niedzwiedzka, L. Leng and K. Cobanova - Jablonna/Kosice Other nutriments, active ingredients and additives 66. Influenceof aprobiotic f./aec/i//« strain on lactic acid bacteriaspecies 93 in the intestine of piglets W. Vahjen, Irina Klär and O. Simon - Berlin 67. Effect of probiotics and prebiotics on intestinal morphology and mRNA 94 expression of infiammatory marker genes in selected tissue samples of newly weaned piglets Christiane Mair, C. Plitzner, M. W. Pfaffl and W. Windisch - Wien/ Freising-Weihenstephan 68. Effect of Enterococcus faecium on the intestinal immune System of 95 piglets during a chaltenge infection with Salmonella Typhimurium DT104 Lydia Scharek-Tedin, H. Mafamane, I. Szabö, K. Nöckler, K. Tedin and M. F. G. Schmidt - Berlin 69. Effects of a niacin supplementation to different diets on rumen 96 fermentation, amounts of niacin at the duodenum, and its concentration in blood and milk of dairy cows Inka-Donata Niehoff, Wiebke Bigalke, Liane Hüther, S. Dänicke and P. Lebzien - Braunschweig 70. Effect of a folk acid supplementation on ruminal metabolism in dairy 97 cows Veronika Ragaller, Liane Hüther, P. Lebzien and G. Flachowsky - Braunschweig 71. Methane reduction effect of simple phenolk acids evaluated by in vitro 98 Hohenheim gas production method A. Jayanegara, H. P. S. Makkar and K. Becker - Stuttgart-Hohenheim 72. Investigations on the water intake of growing heifers 99 M. Grabow, U. Meyer, Hj. Abel and G. Flachowsky - Braunschweig/ Göttingen 73. Evaluation of Lactkin 3147 to reduce in vitro ruminal methane 100 production A. Jayanegara, H. P. S. Makkar and K. Becker - Stuttgart-Hohenheim 74. Effect of a pantothenic acid supplementation on ruminal metabolism in 101 dairy cows Veronika Ragaller, Liane Hüther, P. Lebzien and G. Flachowsky - Braunschweig 75. Comparison between the in vivo and in vitro formation of vitamin K2 by 102 the canine intestinal microbiota Susan Kroger, Petra Hellweg, K. Schäfer and J. Zentek - Berlin 76. Effect of Dietary Nucleotide Supplementation on Gastrointestinal 103 Functions and Deal Digestibilhies of Nutrknts in Newly Weaned Piglets Nadja Sauer, R. Mosenthin, Meike Eklund, Dagmar Jezierny and Eva Bauer- Stuttgart-Hohenheim 77. Infhience of the feed additives digestarom* and Bolifor* on gut 104 Parameters in growing chkken C. Wecke, Agata Lecewkz, Angela Sünder and F. Liebert - Göttingen/ Olsztyn 78. Effect of mannanoligosaccharides and fructooligosaccharides on bone 105 mineral content and bone resistance of broiler chickens fed diets with high content of dietary fibres Birgit Prause, Ruth Messikommer and C. Wenk - Zürich 79. Bone stability and bone composition in pigs fed low P diets 106 supplemented with benzoic acid and phytase Kathrin Bühler, Annette Liesegang, B. Bucher and C. Wenk - Zürich 80. Immune modulating influence of Echinacea purpurea on lysozyme 107 content of egg white and immune response of cell lines Barbara M. Böhmer, Kathrin Huber and Brigitte R. Paulicks - Freising- Weihenstephan/Zurich 81. Reductktn of the prevatence of digestive disorders in the postweaning 108 period of rabbits by a herbal feed additive J. Zentek, R. Krieg, W. Vahjen, Wageha Awad and Susan Kroger - Berlin/ Niederwünsch 82. Ammonium-iron-hexa-cyanoferrate in feed for wild boars can reduce 109 caeshim contamination Ellen Kienzle, Katja Meinel, J. Reddemann, P. MorfeW - München/ Feldkirchen/

Feed estimation and feed 83. Effects oflong-tenn feeding of genetically modified maize (Bt-maize; 110 MON810) to dairy cows on Performance and metabolk parameters Kerstin Steinke, V. Paul, P. GürÜer, W. Preißinger, Steffi Wiedemaim, Christiane Albrecht, H. Spiekers, H. H. D. Meyer and F. J. Schwarz - Freising-Weihenstephan/Grub/Bern 84. Investigations on the potential transfer of recombinant DNA and 111 CrylAb protein from feed into milk, blood, feces and urine of cows fed genetically modified maize P. Gürtler, V. Paul, Kerstin Steinke, W. Preißinger, Steffi Wiedemaim, Christiane Albrecht, H. Spiekers, F.J. Schwarz and H.H.D. Meyer- Freising-Weihenstephan/Grub/Bern 85. Transfer ofvolatiles into the milk of cows fed on silage containing 112 microencapsulated lemon oil Cornelia Haiti, F. J. Schwarz and P. Schieberle - Garching/Freising- Weihenstephan 86. Effect of cattle stocking denshy on the browsing intensity on individual 113 young tree and shrub species present in a subtropkal mountain forest of Southern Bolivia Svenja Marquardt, S. Beck, A. Marquez, M. Kreuzer, Andrea C. Mayer and H. Alz&reca - Zurich/Tarija/La Paz (Bolivia) 87. Effect of24-hours-grazing versus daytime-grazingon feed intake and 114 growth of sheep in the steppe of Inner Mongolia, China Katrin Müller, L. Lin, C. Wang, T. Glindemarm, Anne Schiborra, P. Schönbach, H. Wan, B. M. Tas, M. Gierus, F. Taube and A. Susenbeth - Kiel

10 88. Ensiling moistly harvested lupine seeds and the infhience of 115 conservation on oligosaccharides Annett Gefrom, Edda Maria Ott and Annette Zeyner - Rostock 89. Effects of diets' physical form (mash/pellets; particle sizes) on 116 morphological and histological parameters of the gastrointestinal tract in weaned piglets Saara Betscher, A. Beineke and J. Kamphues - Hannover 90. Egg production and egg composition in budgerigars: A basis for 117 factorial derivation of energy and nutrient requirements during laying period A.-C. Häbich, A. Irie, S. Theermann, S. Hansen, E. Özelerand J. Kamphues - Hannover 91. Effects of hay versus concentrate on urinary energy excretion in horses 118 Ellen Kienzle, Lisa Berchtold and Annette Zeyner - München/Rostock 92. Energy protein metabolism and fertility in three cattle breeds in Tyrol 119 M Füril, N. Göttler, Ch. Mader, J. Gottschalk and A. Einspanier - Leipzig 93. Validation of energy requirements for fattening cattle in 120 based on extensive data from feeding trials L. Gruber, F. J. Schwarz, U. Meyer, K. Rutzmoser, T. Guggenberger- Irdning/Freising-Weihenstephan/Braunschweig/Poing 94. Infhience of different amounts of soybean meal on the isoflavone 121 content in dairy cow's milk M. Hünerberg, U. Meyer, D. R. Kammerer, R. Carle, G. Flachowsky - Braunschweig/Stuttgart-Hohenheim 95. Effect of plant species rieh in secondary metabolites on milk ykld, 122 milk composition and body condition of dairy cows Tasja Kälber, M. Kreuzer, H.-R. Wettstein and F. Leiber - Zürich 96. Ruminal crude protein degradability of different concentrates 123 A Kilic, A. Metwally, Friederike Zeller, M. Schuster and F. J. Schwarz - Izmir/Freising-Weihenstephan/Grub 97. Infhience of genotype on chemical composition and ruminal 124 degradability in maize residual plant matter of varying stages of maturity Friederike Zeller, J. Danier and F. J. Schwarz - Freising-Weihenstephan 98. The effect ofCOitreatmentof maize plants during growth ontheir in 125 situ dry matter degradability Hongbiao Ding, P. Lebzien, S. Dänicke, G. Flachowsky, R. Manderscheid and U. Meyer- Beijing/Braunschweig 99. In vitro ruminal fermentation of diets containing whote plant 126 buckwheat S. L. Amelchanka, M. Kreuzer, Carla R. Sohva and F. Leiber - Zürich 100. Forage quality and tannin concentration of a Swiss colkction of 127 sainfoin {Onobrychis vicüfoUä) accessions B. N. Azuhnwi, B. Boiler, Melanie Martens, Frigga Dohme, M. Kreuzer and H.D. Hess - Posieux/Thun/Zurich 101. Digestibility of diets (consistingofsupplementary feed and wbeat) in 128 fattening turkeys reiated to wbeat treatment (intact, crushed, ground) Stefanie Bank, L. Koddebusch and J. Kamphues - Hannover/Garrel

11 102. Effects of litter quality and excreta composition (water, uric acid, 129 ammonia, macromineral excess) on the development and severity of foot pad dermatitis in fattening turkeys I. M. I. Youssef, A. Beineke and J. Kamphues - Hannover 103. Effkiency of buckwheat kerneis as feed component in broiler diets 130 F. Leiber, Ruth Messikommer, Janina S. Meier and C. Wenk - Zürich 104. Amino acid digestibility of rapesced meals in caecectomised laying hens 131 M. Rezvani, H. Kluth, M. Bulang and M. Rodehutscord - Halle (Saale)/ Stuttgart-Hohenheim

Physiology of transport and epithelial cells

105. Functional and morphological adaptation of rumen epithelium in sheep 132 fed hay and concentrate Judith Kuzinski, R. Zitnan, Christina Warnke-GurgeL, Elke Albrecht, Monika Schweigel - Dummerstorf/Kosice/Rostock 106. New insights for the contribution of ruminal Ca absorption to Ca 133 homeostasis in sheep Nina Mrochen, Mirja Wilkens and B. Schröder - Hannover 107. Transepithelial potential differences affect transport of short-chain 134 fatty acids (SCFA) across rumen epithelium R. Rackwitz, J. R. Aschenbach, Petra Philipp and G. Gabel - Leipzig 108. Effects of different carbohydrate sources on intestinal glucose 135 absorption in calves Stefanie Klinger, B. Noci, Kerstin Müller, Manuela Kuhn, Meike Zürich, G. Breves - Hannover/Berlin 109. Effects of increasing zinc concentrations on intestinal epithelial barrier 136 properties and viability in two cdl culture modeis Ulrike Lodemann, H. Martens, R. Einspanier, Angelika Bondzio - Berlin 110. Functional characterisation of calcium and phosphate transport across 137 the equine intestine Anja Cehak, F. Geburek, K. Feige, B. Schröder, G. Breves - Hannover 111. Developmental influences on the expression of MCT1 in the rumen, 138 retkutum and omasum of neonatal calves F. Taifour, J. Steinhoff, Helga Pfannkuche, H. M. Hammonand G. Gabel - Leipzig/Dummerstorf 112. HCOj transport in sheep omasum: Effect of SCFA 139 Driton Caushi. Katharina Wolf, Meike Beisele, H. Martens - Berlin 113. HeatShock Proteins are modulating Na transport in sheep rumen 140 I. Rabbani, U. Tietjen and H. Martens - Berlin Communications of the Committee for Requirement Standards of the Society of Nutrition Physiology New Equations for Predicting Metabolisable Energy of Compound Feeds for 143-146 Ruminants

Listof Authors 147-156

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