The Influence of Forage Particle Size on Rumen Metabolic Responses and Nutrient Utilization PDF Download
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Languages : en
Pages :
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Author:
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Languages : en
Pages :
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Author:
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Languages : en
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Three trials were conducted to assess the influence of the barley silage particles as a source of effective fiber in total mixed rations for ruminants. Trial one determined the effective fiber characteristics of barley silage at different theoretical cut length; short barley silage (SBS) = 4.68 mm and long barley silage (LBS) = 18.75 mm in a replicated switch back design using six steers fitted with rumen fistulae to measure rumen fermentation patterns, kinetics, digestibility of cell wall constituents. In the second trial, four steers fitted with rumen fistulae in a 4 x 4 Latin square design were used to study the effect of barley silage particle size and concentrate level on the above variables. The third trial used eight multiparous lactating dairy cows in a replicated 4 x 4 Latin squire design to determined the effect of barley silage particle size and concentrate level on eating behavior, milk production and composition. In the first trial, feeding SBS increased DMI and total tract digestibility of DM, NDF and ADF compared with LBS. Mean ruminal pH was lower for steers fed SBS than those fed LBS but pH range was higher (P
Author: H. K. Goering
Publisher:
ISBN:
Category : Feeds
Languages : en
Pages : 24
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Author: Karen Marie Krause
Publisher:
ISBN:
Category :
Languages : en
Pages : 260
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Author: H. G. Jung
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 832
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Organization of forage plants tissue. Utilization of forage fiber by ruminants. Perspectives of cell wall biodegradation-session synopsis. Quantitative analysis of cell wall components. Analysis of forage cell wall polysaccharides. Application of methods for the investigation of lignin structure. Analysis of plant cell walls-session synopsis. Composition and structure of cell wall polysaccharides in forages. Lignin/hydroxycinnamic acid/polycinnamic complexes: synthetic models for regiochemical characterization. Comprehensive model of the lignified plant cell wall. Structure of forage cell walls-session synopsis. Cell wall polysaccharide interactions and degradability. Cell wall lignification and degradability . Machanistic models of forage cell wall degradation. Cell wall matrix interactions and degradation-session synopsis. Microbial adhesion and degradation of plants cell walls. Microbial ecology of cell wall fermentation. Enzymatic hydrolysis of forage cell walls. Microbial and molecular mechanisms of cell wall degradation-session synopsis. Particle-size reduction by ruminants-effects of cell wall. Kinetics of cell wall digestion and passage in ruminants., Influence of feeding management on ruminant fiber digestibility., Cell wall degradation in the ruminant-session synopsis. Cell wall biosynthesis and its regulation. Environmental and genetic effects on cell wall composition and digestibility. Postharvest treatment of fibrous feedstuffs to improve their nutritive value. Machanisms for altering cell wall utilization-session synopsis.
Author: National Research Council
Publisher: National Academies
ISBN: 0309049970
Category : Technology & Engineering
Languages : en
Pages : 94
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In the past decade, animal scientists have learned that administering recombinantly derived somatotropin (growth hormone) to cows improves milk production and that giving beta-adrenergic agonists to meat animals improves productivity and leanness. In order for these metabolic modifiers to yield benefits, however, sound management of the animals' nutrition is necessary. This volume reports on how these substances work in the animals' metabolism, what effects they might have on nutrient requirements of domestic livestock, and what information should be developed further by investigators. The book explores the current understanding of the biology, structure, mechanisms of action, and treatment effects of somatotropin, beta-adrenergic agonists, and anabolic steroids. A companion volume to the Nutrient Requirements of Domestic Animals series, this authoritative volume will be required reading for animal scientists, researchers, veterinarians, livestock farmers, and faculty and students in university animal veterinary science programs.
Author:
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ISBN:
Category : Animal industry
Languages : en
Pages : 888
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Author: R.L. Baldwin
Publisher: Springer Science & Business Media
ISBN: 9780412591600
Category : Medical
Languages : en
Pages : 600
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Role of mminants in human food production; Whyan animal scientist would choose to model animal systems; Basic organization of this book; Modeling principIes and terminology; Classification of models; Objectives in modeling; The modeling process I objective statements, block diagrams, equation forms and parameterization; Steps in modeling; Setting the modeling objective; Block diagrams; Formulation of mathematical statements; Development of numerical inputs; The modeling process II - solution algorithms, model evaluations and parameter estimation; Model solution algorithms; Evaluation of management and research models; Evaluation and use of analytical models for parameter estimation; Decision support software; Animal energetic models; Thermodynamic concepts in nutrition; Historical development of bases for feeding system models; Energy requirements for maintenance and production; Equations used to estimate maintenance and costs of production; Components of maintenanace; Protein and amino acid models; Current protein and amino acid systems; Analytic models of amino aicd and protein metabolism; Dynamic modeling; Biology and algebraic models of ruminant digestion; The rumen microbes and their metabolism; Balance models of ruminant digestion; An analytical model of rumen digestion; Microbial growth elements; Biology and algebraic models of growth; Classical equations for growth; Nutritional models of growth; Concepts of lhe basic biology of growth used in mechanistic models; Biology of lactation; Decent evolution of feeding systems for lactating dairy cattle; An analytical model of nutrient transactions during lactation; Dynamic models of ruminant digestion; Early dynamic models; Current dynamic models; Dynamic models of ruminant adipose tissue metabolism; Evolution of steady-state balance model; Radioisotope tracer elemets; Dynamic models of ruminant mammary metabolism; Development of model inputs and initial parameters; Descriptions of a model of mammary gland metabolism; Dynamic models of liver and viscera metabolism; Overall structure and notation; Mechanistic, dynamic models of growth; Beef growth models; Sheep growth and metabolism model; Lactation Background on MOLL Y. CSL; The program MOLL Y. CSL; Evaluation and use of a growth and lactation model; Behavioral analyses; Sensitivity analyses; Bioeconomic analyse.
Author: David Richard Gast
Publisher:
ISBN:
Category :
Languages : en
Pages : 168
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Author: Francisco Jose Santini
Publisher:
ISBN:
Category : Animal nutrition
Languages : en
Pages : 382
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