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". 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
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.
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.
Feed evaluations systems: historical background; structure and chemistry;feed evaluation-energy; methods of protein evaluation for nonruminants; protein evaluation in ruminants; feeding value of cereals and concentrates; processing and preservation of cereals and protein concentrates; dietary-digestive interactions determining the feeding value of forages and roughages; the preservation of forages; improvement of poor quality forages and roughages; associative effects of feeds; the feeding value of fats; the feed of by-products and wastes.
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.
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.
Up-to-date reviews on all aspects of feed science, from protein evaluation to food processing and methods of improving feed value are contained in this book. The volume has been compiled by leading scientists in the field of feed science in animal production. An interesting historical account of feed science and feed evaluation starting with the use of hay equivalents to the more recent calorimetry assessment of metabolizable energy is given, together with pointers for the way forward. Different aspects of feed science, from plant chemistry to feed evaluation, both for ruminant and non-ruminant animals are discussed including new systems of protein and energy evaluation. Considerable attention is given to the effects of feed processing and feed preservation as it affects nutritive value and physiology of digestion in animals. Aspects of fat digestion, and the latest knowledge on the dynamics of forage digestion in ruminants are discussed. The effect on nutritive value when different feeds are combined for ruminants is examined along with recent methods for improving the nutritive value of roughage. Methods of using agroindustrial waste and by-products in feeding are also included.
By 2050 the world's population is projected to grow by one-third, reaching between 9 and 10 billion. With globalization and expected growth in global affluence, a substantial increase in per capita meat, dairy, and fish consumption is also anticipated. The demand for calories from animal products will nearly double, highlighting the critical importance of the world's animal agriculture system. Meeting the nutritional needs of this population and its demand for animal products will require a significant investment of resources as well as policy changes that are supportive of agricultural production. Ensuring sustainable agricultural growth will be essential to addressing this global challenge to food security. Critical Role of Animal Science Research in Food Security and Sustainability identifies areas of research and development, technology, and resource needs for research in the field of animal agriculture, both nationally and internationally. This report assesses the global demand for products of animal origin in 2050 within the framework of ensuring global food security; evaluates how climate change and natural resource constraints may impact the ability to meet future global demand for animal products in sustainable production systems; and identifies factors that may impact the ability of the United States to meet demand for animal products, including the need for trained human capital, product safety and quality, and effective communication and adoption of new knowledge, information, and technologies. The agricultural sector worldwide faces numerous daunting challenges that will require innovations, new technologies, and new ways of approaching agriculture if the food, feed, and fiber needs of the global population are to be met. The recommendations of Critical Role of Animal Science Research in Food Security and Sustainability will inform a new roadmap for animal science research to meet the challenges of sustainable animal production in the 21st century.