[PDF] Feeding Systems And Feed Evaluation Models eBook

Author : Julian Wiseman
Publisher : Elsevier
Page : 469 pages
File Size : 29,1 MB
Release : 2013-10-22
Category : Technology & Engineering
ISBN : 1483162249

GET BOOK

Feedstuff Evaluation contains the proceedings of the 50th University of Nottingham Easter School in Agricultural Sciences, held at Sutton Bonington in July 1989. The book presents papers discussing a wide range of topics on the accurate evaluation of feedstuffs for livestock. Initially, systems of expressing the nutritive value of feeds are considered. Modifications to feeding value as influenced by animal factors including intake and palatability are discussed. Specific dietary ingredients, being plant polysaccharides, fats, minerals and vitamins are detailed. Prediction of the nutritive value of compound feeds and individual feeds through classical wet chemistry and the more recent NIR is assuming considerable importance in the rapid evaluation of diets. Associated with these developments is an appreciation of the relevance of both inter- and intra-laboratory variation in determinations. Finally, the need to collate information into an interactive data-base is being actively pursued. It is evident that safety of animal feeds is becoming an increasingly topical issue and the last session considered the relevance of naturally-occurring toxic factors, residues, mycotoxins and, finally, animal pathogens. Veterinarians, farmers, farm administrators, and those involved in every aspect of nutrient supply to animals will find the compendium very insightful and informative.

Author : Mike K. Theodorou
Publisher : Cabi
Page : 506 pages
File Size : 19,57 MB
Release : 2000
Category : Medical
ISBN :

GET BOOK

Feed evaluation for animal production. Feed characterization. Intake, passage and digestibility. In vitro and in situ methods for estimating digestibility with reference to protein degradability. Measurement of energy metabolism. Feeding systems for dairy cows. Feeding systems for beef cattle. Feeding systems for sheep. Feding systems for pigs. Feeding systems for poultry. Feeding systems for horse. Feeding systems for pigs. Feeding systems for poultry. Feeding systems for horse. Prediction of response to nutrients by ruminants through mathematical modelling and improved feed characterizaion. Analyses of modelling whole-rumen function. Modelling the lactating dairy cow. Modelling growth and wool production in ruminats.Modelling growth and lactation in pigs. Modelling the utilization of dietary energy and amino acids by poultry. Modelling growth in fish. The nutrition of companion animals.

Author : Harald Volden
Publisher : Springer Science & Business Media
Page : 172 pages
File Size : 19,70 MB
Release : 2011-10-05
Category : Science
ISBN : 9086867189

GET BOOK

NorFor is a semi-mechanistic feed evaluation system for cattle, which is used by advisors in Denmark, Iceland, Norway and Sweden. This book describes in detail the system and it covers five main sections. The first is concerned with information on feed characteristics, feed analysis and feed digestion methods. The second section describes the digestion and metabolism in the gastrointestinal tract and the supply and requirement of energy and metabolizable amino acids. The third section considers the prediction of feed intake and physical structure of the diet. The fourth section focuses on model evaluation and the final section provides information on the IT solutions and feed ration formulation by a non-linear economical optimization procedure. This book will be of significant interest to researchers, students and advisors of cattle nutrition and feed evaluation.

Author : INRA
Publisher : BRILL
Page : 639 pages
File Size : 35,95 MB
Release : 2023-11-27
Category : Medical
ISBN : 908686872X

GET BOOK

The INRA Feeding System for Ruminants has been renewed to better address emerging challenges for animal nutrition: prevision of productive responses, product quality, animal health and emissions to the environment, in a larger extent of breeding contexts. The new system is mainly built from meta-analyses of large data bases, and modelling. The dietary supply model accounts for digestive interactions and flows of individual nutrients, so that feed values depend on the final ration. Animal requirements account for variability in metabolic efficiency. Various productive and non-productive animal responses to diets are quantified. This book presents the whole system for dairy and meat, large and small ruminant production, including specificities for tropical and Mediterranean areas. The first two sections present biological concepts and equations (with their field of application and statistical accuracy) used to predict intake (including at grazing) and nutrient supply (Section 1), animal’s requirements and multiple responses to diets (Section 2). They apply to net energy, metabolisable protein and amino acids, water, minerals and vitamins. Section 3 presents the use of concepts and equations in rationing with two purposes: (1) diet calculation for a given performance objective; and (2) prediction of the multiple responses of animal to diet changes. Section 4 displays the tables of feed values, and their prevision. All the equations and concepts are embedded in the fifth version of INRAtion® software for practical use.

Author : Paul J. Moughan
Publisher : Brill Wageningen Academic
Page : 0 pages
File Size : 25,38 MB
Release : 2018
Category : Aliments pour animaux
ISBN : 9789086863099

GET BOOK

". The topics covered are nutrient analysis and characterisation, nutrient-bioavailability, post-absorptive nutrient utilisation, the principles of animal growth and the mathematical modelling of growth. Practical aspects of feed processing, anti-nutritional factors, the use of markers in nutrition studies, predicting bioavailable nutrients and the principles of feed formulation are highlighted in the context of pig, poultry and companion animal nutrition."--Publisher's website

Author : R.L. Baldwin
Publisher : Springer Science & Business Media
Page : 600 pages
File Size : 21,78 MB
Release : 1995-05-31
Category : Medical
ISBN : 9780412591600

GET BOOK

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 : Sigurd Boisen
Publisher :
Page : 74 pages
File Size : 46,32 MB
Release : 2007
Category : Animal feeding
ISBN :

GET BOOK

Basic principles for feed evaluation; Potential physiological; energy; Potential digestibility of nutrients; Stadardised digestible amino acids; Ideal protein; Protein quality of feedstuffs; Energy evaluation of the major components in feedstuffs and pig diets; Starch as energy reference for other nutrient fractions; Ileal digestible carbohydrates; Ileal digestible lipids; Ileal digestible protein; Anti-nutritional factors (ANF'S); The practical performance of the new danish feed evaluation system; Basal chemical analyses, factors and equations; Calculation of energy value (PPE); Standardised digestible amino acids (SDAA) in feedstuffs and diets; Amino acid recommendations; Feed optimisation based on SDAA and PPE; The new danish feed evaluation system compared with other systems; Further developments and improvements in feed evaluation and pig production; Feed evaluation and optimisation of diets in practise; Feeding techniques and feeding strategy; General principles for a step-wise feed evaluation based on the new danish system.

Author : Paul J. Moughan
Publisher : Wageningen Academic Publishers
Page : 296 pages
File Size : 11,26 MB
Release : 2000
Category : Medical
ISBN :

GET BOOK

Overview of determinants of the nutritional value of feed ingredients; Principles of chemical analysis; Developments in the determination of protein and amino acids; Developments in the measurement of the energy content of feeds and energy utilisation animals; Characterisation of the non-starch polysaccharides; Near infrared reflectance spectroscopy and related technologies for the analysis of feed ingredients; Amino acids - the collection of ileal digesta and characterisation of the endogenous component; Amino acids: digestibility, availability and metabolism; Bioavailability: the energy component of a ration for monogastric animals; In vitro digestibility methods: history and specific approaches; The significance of antinutritional factors in feedstuffs for monogastric animals; Amino acid and energy requirements; Principles behind feed formulation; Advances in feed evaluation for pigs; Advances in feed evaluation for poultry; Advances in fed evaluation for companion animals.

Author : Tilden Wayne Perry
Publisher : Pearson
Page : 696 pages
File Size : 18,73 MB
Release : 2003
Category : Technology & Engineering
ISBN :

GET BOOK

This contemporary and authoritative survey provides comprehensive coverage of the nutritional and scientific feeding of beef cattle, dairy cattle, poultry, horses, sheep and swine, and offers a detailed treatment of feed composition for use in ration formulation. Topics covered include principles of animal nutrition and physiology, feed stuffs, and livestock and poultry feeding. For those in Animal Nutrition fields.