Investigations on the effect of forage source, grinding, and urea supplementation on ruminal fermentation and microbial protein flow in a semi-continuous rumen simulation system

References

• Akin , D E . 1993 . Forage cell wall structure and digestibility , 73 – 82 . Madison, Wisconsin, , USA : American Society of Agronomy, Inc., Crop Science Society of America, Inc., Soil Science Society of America, Inc. Chapter 3, Perspectives of cell wall biodegradation; .
   Google Scholar
• Bach , A , Yoon , I K , Stern , M D , Jung , H G and Chester-Jones , H . 1999 . Effects of type of carbohydrate supplementation to lush pasture on microbial fermentation in continuous culture . J Dairy Sci , 82 : 153 – 160 .
   PubMed Web of Science ®Google Scholar
• Bauchop , T . 1989 . Biology of gut anaerobic fungi . Biosystems , 23 : 53 – 64 .
   PubMed Web of Science ®Google Scholar
• Boguhn , J , Kluth , H and Rodehutscord , M . 2006a . Effect of total mixed ration composition on fermentation and efficiency of ruminal microbial crude protein synthesis in vitro . J Dairy Sci , 89 : 1580 – 1591 .
   PubMed Web of Science ®Google Scholar
• Boguhn , J , Kluth , H and Rodehutscord , M . 2006b . Effect of total mixed ration composition on amino acid profiles of different fractions of ruminal microbes in vitro . J Dairy Sci , 89 : 1592 – 1603 .
   PubMed Web of Science ®Google Scholar
• Bossen , D , Mertens , D R and Weisbjerg , M R . 2008 . Influence of fermentation methods on neutral detergent fiber degradation parameters . J Dairy Sci , 91 : 1464 – 1476 .
   PubMed Web of Science ®Google Scholar
• Boucher , S E , Ordway , R S , Whitehouse , N L , Lundy , F P , Kononoff , P J and Schwab , C G . 2007 . Effect of incremental urea supplementation of a conventional corn silage-based diet on ruminal ammonia concentration and synthesis of microbial protein . J Dairy Sci , 90 : 5619 – 5633 .
   PubMed Web of Science ®Google Scholar
• Carro , M D , Lebzien , P and Rohr , K . 1995 . Effects of pore size of nylon bags and dilution rate on fermentation parameters in a semi-continuous artificial rumen . Small Ruminant Res , 15 : 113 – 119 .
   Web of Science ®Google Scholar
• Carro , M D and Miller , E L . 1999 . Effect of supplementing a fibre basal diet with different nitrogen forms on ruminal fermentation and microbial growth in an in vitro semi-continuous culture system (RUSITEC) . Brit J Nutr , 82 : 149 – 157 .
   PubMed Web of Science ®Google Scholar
• Castillejos , L , Calsamiglia , S , Ferret , A and Losa , R . 2005 . Effects of a specific blend of essential oil compounds and the type of diet on rumen microbial fermentation and nutrient flow from a continuous culture system . Anim Feed Sci Technol , 119 : 29 – 41 .
   Web of Science ®Google Scholar
• Cherdthong , A and Wanapat , M . 2010 . Development of urea products as rumen slow-release feed for ruminant production: a review . Aust J Basic Appl Sci , 4 : 2232 – 2241 .
   Google Scholar
• Czerkawski , J W and Breckenridge , G . 1977 . Design and development of a long-term rumen simulation technique (Rusitec) . Brit J Nutr , 38 : 371 – 384 .
   PubMed Web of Science ®Google Scholar
• Czerkawski , J W and Breckenridge , G . 1982 . Distribution and changes in urease (EC 3.5.1.5) activity in rumen simulation technique (Rusitec) . Brit J Nutr , 47 : 331 – 348 .
   PubMed Web of Science ®Google Scholar
• Geissler , C , Hoffmann , M and Hickel , B . 1976 . Ein Beitrag zur gaschromatographischen Bestimmung flüchtiger Fettsäuren . Arch Anim Nutr , 26 : 123 – 129 .
   Google Scholar
• Grant , R J and Mertens , D R . 1992 . Influence of buffer pH and raw corn starch addition on in vitro fiber digestion kinetics . J Dairy Sci , 75 : 2762 – 2768 .
   PubMed Web of Science ®Google Scholar
• Griswold , K E , Apgar , G A , Bouton , J and Firkins , J L . 2003 . Effects of urea infusion and ruminal degradable protein concentration on microbial growth, digestibility, and fermentation in continuous culture . J Anim Sci , 81 : 329 – 336 .
   PubMed Web of Science ®Google Scholar
• Griswold , K E , Hoover , W H , Miller , T K and Thayne , W V . 1996 . Effect of form of nitrogen on growth of ruminal microbes in continuous culture . J Anim Sci , 74 : 483 – 491 .
   PubMed Web of Science ®Google Scholar
• Henning , P H , Steyn , D G and Meissner , H H . 1991 . The effect of energy and nitrogen supply pattern on rumen bacterial growth in vitro . Anim Prod , 53 : 165 – 175 .
   Google Scholar
• Hildebrand , B , Boguhn , J and Rodehutscord , M . 2011a . Animal . Effect of maize silage to grass silage ratio and feed particle size on protein synthesis and amino acid profile in different microbial fractions in a semi-continuous rumen simulation , 5 : 537 – 546 .
   Google Scholar
• Hildebrand , B , Boguhn , J and Rodehutscord , M . 2011b . Effect of maize silage to grass silage ratio and feed particle size on ruminal fermentation in vitro . Animal , 5 : 528 – 536 .
   Web of Science ®Google Scholar
• Hoover , W H , Knowlton , P H , Stern , M D and Sniffen , C J . 1976 . Effects of differential solid-liquid removal rates on fermentation parameters in continuous cultures of rumen contents . J Anim Sci , 43 : 535 – 542 .
   Web of Science ®Google Scholar
• Joblin , K N and Naylor , G E . 1993 . Inhibition of the rumen anaerobic fungus Neocallimastix frontalis by fermentation products . Lett Appl Microbiol , 16 : 254 – 256 .
   Web of Science ®Google Scholar
• Jones , D F , Hoover , W H and Miller , Webster TK . 1998 . Effects of concentrations of peptides on microbial metabolism in continuous culture . J Anim Sci , 76 : 611 – 616 .
   PubMed Web of Science ®Google Scholar
• McDougall , E I . 1948 . Studies on ruminant saliva. 1. The composition and output of sheep's saliva . Biochem J , 43 : 99 – 109 .
   PubMed Web of Science ®Google Scholar
• Meng , Q X , Xia , Z G and Kerley , M S . 2000 . The requirement of ruminal degradable protein for non-structural carbohydrate-fermenting microbes and its reaction with dilution rate in continuous culture. Asian-Australas . J Anim Sci , 13 : 1399 – 1406 .
   Google Scholar
• Menke , K H and Steingass , H . 1988 . Estimation of the energetic feed value obtained from chemical analysis and in vitro gas production using rumen fluid . Anim Res Dev , 28 : 7 – 55 .
   Google Scholar
• Niderkorn , V and Baumont , R . 2009 . Associative effects between forages on feed intake and digestion in ruminants . Animal , 3 : 951 – 960 .
   PubMed Web of Science ®Google Scholar
• Robles , A Y , Belyea , R L , Martz , F A and Weiss , M F . 1980 . Effect of particle size upon digestible cell wall and rate of in vitro digestion of alfalfa and orchardgrass forages . J Anim Sci , 51 : 783 – 790 .
   PubMed Web of Science ®Google Scholar
• Rodehutscord , M , Kapocius , M , Timmler , R and Dieckmann , A . 2004 . Linear regression approach to study amino acid digestibility in broiler chickens . Brit Poult Sci , 45 : 85 – 92 .
   PubMed Web of Science ®Google Scholar
• Rodríguez-Prado , M , Calsamiglia , S and Ferret , A . 2004 . Effects of fiber content and particle size of forage on the flow of microbial amino acids from continuous culture fermenters . J Dairy Sci , 87 : 1413 – 1424 .
   PubMed Web of Science ®Google Scholar
• Russell , J B , O'Connor , J D , Fox , D G , Van Soest , P J and Sniffen , C J . 1992 . A net carbohydrate and protein system for evaluating cattle diets: I. Ruminal fermentation . J Anim Sci , 70 : 3551 – 3561 .
   PubMed Web of Science ®Google Scholar
• Satter , L D and Slyter , L L . 1974 . Effect of ammonia concentration on rumen microbial protein production in vitro . Brit J Nutr , 32 : 199 – 208 .
   PubMed Web of Science ®Google Scholar
• Stokes , S R , Hoover , W H , Miller , T K and Manski , R P . 1991 . Impact of carbohydrate and protein levels on bacterial metabolism in continuous culture . J Dairy Sci , 74 : 860 – 870 .
   PubMed Web of Science ®Google Scholar
• Van Soest , P J , Robertson , J B and Lewis , B A . 1991 . Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition . J Dairy Sci , 74 : 3583 – 3597 .
   PubMed Web of Science ®Google Scholar
• [VDLUFA] Verband Deutscher Landwirtschaftlicher Untersuchungs- und Forschungsanstalten . 2006 . Handbuch der Landwirtschaftlichen Versuchs- und Untersuchungsmethodik (VDLUFA-Methodenbuch), Bd. III Die chemische Untersuchung von Futtermitteln , Darmstadt, , Germany : VDLUFA-Verlag .
   Google Scholar
• Windschitl , P M and Stern , M D . 1988 . Effects of urea supplementation of diets containing lignosulfonate-treated soybean meal on bacterial fermentation in continuous culture of ruminal contents . J Anim Sci , 66 : 2948 – 2958 .
   Web of Science ®Google Scholar
• Witzig , M , Boguhn , J , Kleinsteuber , S , Fetzer , I and Rodehutscord , M . 2010a . Effect of the corn silage to grass silage ratio and feed particle size of diets for ruminants on the ruminal Bacteroides-Prevotella community in vitro . Anaerobe , 16 : 412 – 419 .
   PubMed Web of Science ®Google Scholar
• Witzig , M , Boguhn , J , Kleinsteuber , S , Fetzer , I and Rodehutscord , M . 2010b . Influence of the maize silage to grass silage ratio and feed particle size of rations for ruminants on the community structure of ruminal Firmicutes in vitro . J Appl Microbiol , 109 : 1998 – 2010 .
   PubMed Web of Science ®Google Scholar
• Zhang , Y , Gao , W and Meng , Q . 2007 . Fermentation of plant cell walls by ruminal bacteria, protozoa and fungi and their interaction with fibre particle size . Arch Anim Nutr , 61 : 114 – 125 .
   PubMed Web of Science ®Google Scholar