The purpose of the Ruminant Nutrition System (RNS) software is to integrate and apply current scientific knowledge and to encourage creative and innovative ideas to solve practical feeding and nutrition problems. This is accomplished by using the accumulated scientific knowledge to establish relational and conceptual links among key variables and quantify their values. The foremost goal in developing the RNS was to provide a framework that could be used for incorporating and implementing new scientific knowledge and submodels to more accurately predict nutrient requirements and biological values for ruminants currently used in food production. The ultimate purpose is to improve animal productivity and profitability while reducing nutrient excretion per unit of production.This book is intended for teaching and research by faculty and graduate students at the master or doctoral levels in life sciences, animal science, wildlife and fisheries sciences, ecosystem science and management, veterinary medicine, and biology and zoology. This book will also be of use to practicing nutritionists who are seeking advanced information on applied ruminant nutrition (in cattle, sheep, and goats) and to understand biological and nutritional modeling of nutrient requirements by ruminants and nutrients supplied by feedstuffs undergoing ruminal fermentation, postruminal digestion, and absorption.The goals of this book on ruminant nutrition science are to document information, share knowledge, stimulate thinking and discussions, provoke criticism to build a better system, challenge the system with new discoveries, and foster learning by young students and teaching of scientists for the future.The first edition of The Ruminant Nutrition System: An Applied Model for Predicting Nutrient Requirements and Feed Utilization in Ruminants was published in October 2016. Since then we have received much positive feedback, which has encouraged us to revise and expand it. In this second edition, we have updated concepts and added new information, clarified and enhanced the discussions of important topics, included new and improved and standardized existing graphics and illustrations, rearranged some of the text, and included indexes for subjects and authors.Although we believe this second edition of The Ruminant Nutrition System is a lot more inclusive and complete, we are not content to stop here. We must be alert, always seeking for new ideas and how to implement them. Some branches of sciences experience rapid progress because of their economic relevance, as well as the pace of their development and application of novel technologies. One example of such progress is the ability to manipulate microorganisms genomically to produce biofuel more efficiently and in a more sustainable way. For example, Davidi et al. (2016) successfully added a laccase, or lignin-degrading enzymes, from the aerobic bacterium Thermobifida fusca into a designer cellulosome, a multienzyme complex structure commonly found in anaerobic bacteria. The resultant chimera had the ability to degrade cellulose, hemicellulose, and lignin simultaneously. This use of laccase may be an early example of the rapid application of this long-known enzyme (Claus, 2004; Thurston, 1994) in biofuel production and other industries, such as pulp and paper and crop biotechnology. Applications of such technology in ruminant nutrition might yield enormous benefits not yet realized, even though its adoption may not happen in the near future. This technology may eventually change the way we understand indigestible dietary compounds. Rapid scientific developments such as this pose an interesting challenge for nutrition modeling. They require nutritionists to be constantly aware of discoveries and determine how to adopt them in the livestock industry.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.