Download or read book Increasing Postruminal Amino Acid Supply to Cattle Consuming Forages written by Bret Hess and published by . This book was released on 1996 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provision of supplemental nutrients is often necessary to obtain a desirable level of beef cattle productivity. The productive potential has been shown to increase in response to strategic supplementation programs. It has been speculated that production from growing and lactating cattle is limited by inadequate supply of metabolizable amino acids. Deficiencies are heightened when cattle are exposed to cold environments. Increasing metabolizable amino acids is commonly accomplished by implementing one of two supplementation regimens: (1) protein sources which escape ruminal digestion (UIP) or (2) ruminally protected amino acids (RPAA). Three experiments were conducted to evaluate the effects of increasing postruminal amino acid supply to cattle. In experiment 1, 30 lightweight heifers were used to determine the influence of supplemental soybean hulls plus UIP on intake, growth performance, and serum metabolites. Intake was not influenced by supplementation during cold ambient conditions, but growth performance was greatest for heifers offered UIP. Serum glucose, urea N, and non-esterified fatty acids were increased in heifers receiving supplemental UIP compared to those fed the isocaloric equivalent amount of soybean hulls. Six multi-cannulated Holstein steers were used in experiment 2 to evaluate the effects of the same supplements on site and extent of digestion at thermoneutrality and exposure to cold conditions. Fluid and particulate passage from the rumen increased during cold exposure, which did not affect microbial flow to the duodenum. Digestibility of N shifted from the small intestine to the large intestine in response to the cold environment, which allowed greater OM and NDF digestibilities in the lower and total tract of steers supplemented with UIP. From the results of these two experiments, it is suggested that addition of UIP to soybean hulls increased growth performance by maintaining nutrient digestion and enhancing metabolic status in the cold. Experiment 3 was conducted to determine how primiparous beef cattle respond to increasing level of postruminal methionine and lysine. Total milk protein exhibited a quadratic response with increasing level of RPAA, while cow weight gain yielded an inverse response to RPAA. Growth hormone, insulin, and insulin-like growth factor-I were not affected by dietary treatment, but did respond to changes in physiological state. Therefore, shifts in production away from body weight gain to increased milk production did not appear to be associated with changes in metabolic regulators.
Download or read book Amino Acid Supply in Lactating Dairy Cattle written by Samuel William Fessenden and published by . This book was released on 2016 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amino acid flow from the rumen was quantified and key aspects of rumen fermentation were evaluated in lactating dairy cattle. Rumen bacteria and protozoa were analyzed for amino acid (AA) composition and digestibility, and values were incorporated into the Cornell Net Carbohydrate and Protein System (CNCPS). Two in vivo studies were performed to evaluate the effects of a commercial fermentation byproduct on nutrient digestion, microbial growth, omasal flow of nutrients, and milk production in lactating dairy cattle. The objectives of the first portion of the first study (Chapter 2) was to evaluate nutrient digestion in the rumen and total tract, along with omasal flows of N. Inclusion of fermentation byproduct decreased dietary N degradation in the rumen, with no detrimental effects on microbial N flows. The second part of the experiment (Chapter 3) involved measurment of microbial growth and turnover, partitioning of protozoa and bacterial N, and determination of omasal AA flow. Cows fed the fermentation byproduct had increased flows of non-microbial AA at the omasal canal. Comparison of the observed results against model predicted values indicated that the rumen sub-model of CNCPS v.7 was able to provide accurate estimations of total microbial N. The second trial (Chapter 4) was performed to evaluate the effects of the fermentation byproduct on milk production in groups of lactating cows. Cows fed fermentation byproduct had increased energy-corrected milk yield and protein yield compared with cows fed regular and rumen protected soybean meal. In Chapter 5, two methods not previously applied to microbial samples were used to characterize the AA profile and digestibility of bacterial and protozoal protein. The values obtained, along with other updates to protozoal growth and turnover parameters from Chapter 3 were incorporated into the CNCPS. A comparison of model predicted vs. observed value from a larger literature dataset was used to evaluate improvements in the model's predictive capability. Overall, the use of omasal sampling, improved isolation of protozoa, and more accurate determination of post ruminal flows of digestible AA allowed for a more complete understanding of microbial protein synthesis and more accurate model predictions of post ruminal AA supply.
Download or read book Protein and Amino acid nutrition written by Anthony Albanese and published by Elsevier. This book was released on 2012-12-02 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protein and Amino Acid Nutrition describes the state of knowledge concerning the nutrition of proteins and amino acids. Topics range from the effect of some therapeutic agents on protein and amino acid nutrition, to species and age differences in amino acid requirements; utilization of D-amino acids; effect of proteins and amino acids on the growth of adult tissue in vitro; and amino acid requirements of animals and young adults. This volume is organized into 16 chapters and begins with an overview of the nutritional implications of the metabolic interrelationships of amino acids. The next chapters discuss experiments that tested the differences in amino acid requirements due to the differences in age and in species among animals, the biochemical individuality of amino acid requirements, and the utilization of dietary proteins. This book explains the synthesis of tissue proteins in relation to the essential amino acids; the link between food energy and nitrogen metabolism; and the use of the repletion method to measure the nutritive value of proteins, protein hydrolyzates, and amino acid mixtures. The final chapter discusses the nutritional needs of the older age groups. This book is intended for scientists, students, and researchers interested in human and animal nutrition.
Download or read book Recent Developments in Ruminant Nutrition written by W Haresign and published by Elsevier. This book was released on 2013-10-22 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent Developments in Ruminant Nutrition presents papers that discuss the advancement of the different areas of ruminant nutrition. The book is comprised of 20 chapters that cover topics, such as reproduction, diet, and nutrition. The coverage of the text includes growth stimulation in ruminants; protein quantity and quality for the U.K. dairy cow; and complete-diet feeding of dairy cows. The book also covers rumen fermentation related topics, such as influence of nitrogen and carbohydrate inputs on rumen fermentation; aspects of the biochemistry of rumen fermentation and their implication in ruminant productivity; and manipulation of rumen fermentation. The text will be of great use to researchers and professionals in the animal husbandry industry.
Download or read book Dried Distillers Grains Plus Solubles as a Protein and Energy Supplement for Beef Cattle written by Joel Blaine Corners and published by . This book was released on 2004 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The beef industry is in a constant search for new feedstuffs to be used in the production process. This occurs for several reasons. Nutritional support of gain in growing beef cattle needs to, at minimum, match improvements realized in the genetic capability for growth. Feed costs constitute one of the largest beef production costs and economics has dictated that feed cost per kilogram of gain be reduced to remain competitive in the world market. Manufacturing of goods for human consumption has created numerous by-products with little economic value for human use. Dried distillers grains with solubles (DDGS), a by-product of ethanol production, represents a product which could be used as a replacement for soybean meal (SBM) in cattle rations. A national need for fuel-grade ethanol has driven dramatic increases in its production and subsequent increases in DDGS supply. The state of Missouri has been targeted as an area for development of ethanol production. The by-product of the process, DDGS, is high in protein, digestible fiber, and lipid content. This makes it a potential Nitrogen and energy source for ruminant rations. A series of experiments was conducted to evaluate the impact of DDGS as a protein and energy source in beef cattle. We compared DDGS and SBM in growing heifers consuming corn-silage, soyhull, and corn-based diets to evaluate the performance and cost-effectiveness of the two supplements. Similar dietary N levels were evaluated. Inclusion of DDGS in the diet resulted in increased final weight, ADG, DMI, and lower cost of gain as compared to heifers consuming SBM. Grazing is utilized in a large portion of Missouri cattle production, with summer generally requiring supplementation. A study was conducted which evaluated increasing levels of DDGS for heifers grazing tall fescue. Performance criteria were evaluated for animals receiving 0.45, 0.91, or 1.36 kg DDGS and a 0.1 kg soyhull negative control. Average daily gain was quadratically improved as level of DDGS in the diet was increased, with 0.91 kg DDGS providing the greatest ADG. Intake of forage DM and cost of gain were not affected by treatment. The final experiment examined the post-ruminal amino acid flow of mature steers consuming timothy hay and supplemented with DDGS, SBM, a SBM/DDGS blend, or negative control. Supplementation increased duodenal flow of total essential and non-essential AA, while Met, Leu, and Trp were linearly increased by greater inclusion of DDGS in the diet. Dried distillers grains with solubles appears to be a valid replacement of SBM in highforage growing diets.
Download or read book NorFor written by Harald Volden and published by Springer Science & Business Media. This book was released on 2011-10-05 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Matching Ruminant Production Systems with Available Resources in the Tropics and Sub tropics written by Thomas Reginald Preston and published by . This book was released on 1987 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction; Livestock development strategies; integration: livestock with crops; Digestive physiology of ruminants; Metabolism; Manipulation of feeding & the rumen ecosystem; Control of feed inteke in ruminants; Guidelines for feeding systems; Feeding systems: straws & agro-industrial byproducts; Pasture-based feeding systems; Parasite/nutrition interactions; Nutritional principles smallholder livestock systems; Perspectives; Index.
Download or read book Nutrient Requirements of Beef Cattle written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-06-16 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1944, the National Research Council (NRC) has published seven editions of the Nutrient Requirements of Beef Cattle. This reference has guided nutritionists and other professionals in academia and the cattle and feed industries in developing and implementing nutritional and feeding programs for beef cattle. The cattle industry has undergone considerable changes since the seventh revised edition was published in 2000 and some of the requirements and recommendations set forth at that time are no longer relevant or appropriate. The eighth revised edition of the Nutrient Requirements of Beef Cattle builds on the previous editions. A great deal of new research has been published during the past 14 years and there is a large amount of new information for many nutrients. In addition to a thorough and current evaluation of the literature on the energy and nutrient requirements of beef in all stages of life, this volume includes new information about phosphorus and sulfur contents; a review of nutritional and feeding strategies to minimize nutrient losses in manure and reduce greenhouse gas production; a discussion of the effect of feeding on the nutritional quality and food safety of beef; new information about nutrient metabolism and utilization; new information on feed additives that alter rumen metabolism and postabsorptive metabolism; and future areas of needed research. The tables of feed ingredient composition are significantly updated. Nutrient Requirements of Beef Cattle represents a comprehensive review of the most recent information available on beef cattle nutrition and ingredient composition that will allow efficient, profitable, and environmentally conscious beef production.
Download or read book Amino Acids in Nutrition and Health written by Guoyao Wu and published by Springer Nature. This book was released on 2021-03-26 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amino acids (AAs) are not only building blocks of protein, but are also signalling molecules as well as regulators of gene expression and the protein phosphorylation cascade. Additionally, AAs are key precursors for syntheses of hormones and low-molecular weight nitrogenous substances with each having enormous biological importance. For example, physiological concentrations of AA metabolites (e.g., nitric oxide, polyamines, glutathione, taurine, thyroid hormones, and serotonin) are required for cell functions. Growing evidence shows that humans and animals have dietary requirements for all proteinogenic AAs. Mammals, birds and fish also have species- and age-dependent needs for some AA-related substances. However, elevated levels of other products (e.g., ammonia, homocysteine, H2S, and asymmetric dimethylarginine) are pathogenic factors for neurological disorders, oxidative stress, and cardiovascular disease. Thus, optimal amounts of AAs and their ratios in diets and circulation are crucial for whole body homeostasis and health. Adequate provision of one or a mixture of functional AAs or metabolites may be beneficial for ameliorating health problems at various stages of the life cycle (e.g., fetal growth restriction, neonatal morbidity and mortality, weaning-associated intestinal dysfunction and wasting syndrome, obesity, diabetes, cardiovascular disease, the metabolic syndrome, and infertility). Dietary supplementation of these nutrients can also optimize the efficiency of metabolic transformations to enhance muscle growth, milk production, and athletic performance, while preventing excess fat deposition and reducing adiposity. Therefore, functional AAs hold great promise in improving the growth, health and well-being of individuals. Chapter 7 is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.
Download or read book Biotechnology in Animal Feeds and Animal Feeding written by R. John Wallace and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the dramatically rising sophistication of biological methods and products and the increasing use of recombinant DNA technology, now is an apt time to review the status of biotechnology in animal feeding. This book gives succinct yet comprehensive coverage of products of biotechnology and allied sciences used in animal feed and feeding industries. Particular emphasis is placed on: - Conservation and upgrading of feeds and feed components - Increasing the protein value of feeds - Antimicrobials - Microbial feed additives - Increasing the energy value of feeds. Moreover, increasing environmental concerns are reflected in chapters describing dietary products which may help to reduce environmental hazards from animal feeding enterprises. A discussion of social and legislative aspects relating to biotechnology and animal feeding rounds off this useful compilation of timely articles.
Download or read book Amino Acid and Fatty Acid Nutrition of Beef Cattle Consuming High forage Diets written by Eric J. Scholljegerdes and published by . This book was released on 2005 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient Requirements of Dairy Cattle written by National Research Council and published by National Academies Press. This book was released on 2001-02-09 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: This widely used reference has been updated and revamped to reflect the changing face of the dairy industry. New features allow users to pinpoint nutrient requirements more accurately for individual animals. The committee also provides guidance on how nutrient analysis of feed ingredients, insights into nutrient utilization by the animal, and formulation of diets to reduce environmental impacts can be applied to productive management decisions. The book includes a user-friendly computer program on a compact disk, accompanied by extensive context-sensitive "Help" options, to simulate the dynamic state of animals. The committee addresses important issues unique to dairy science-the dry or transition cow, udder edema, milk fever, low-fat milk, calf dehydration, and more. The also volume covers dry matter intake, including how to predict feed intake. It addresses the management of lactating dairy cows, utilization of fat in calf and lactation diets, and calf and heifer replacement nutrition. In addition, the many useful tables include updated nutrient composition for commonly used feedstuffs.
Download or read book Designing Foods written by National Research Council and published by National Academies Press. This book was released on 1988-02-01 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This lively book examines recent trends in animal product consumption and diet; reviews industry efforts, policies, and programs aimed at improving the nutritional attributes of animal products; and offers suggestions for further research. In addition, the volume reviews dietary and health recommendations from major health organizations and notes specific target levels for nutrients.
Download or read book Modelling Nutrient Utilization in Farm Animals written by J. P. McNamara and published by CABI. This book was released on 2000 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes current research in modelling nutrient use in farm animals, from cellular to ecosystem level. The chapters are developed from papers presented at a satellite meeting of the 9th International Symposium on Ruminant Physiology, held in South Africa in October 1999.Excellent papers from a top list of contributorsEditors of great reputationCovers the current topics of interest
Download or read book Rumenology written by Danilo Domingues Millen and published by Springer. This book was released on 2016-09-22 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book combines information about the behaviour that allowed ruminants to survive and to evolve on Earth: the rumen. Furthermore, the reader will find aspects involving rumen anatomy, physiology, microbiology, fermentation, metabolism, manipulation, kinetics and modeling. Thus, the book was not only organized to help students involved in areas such as ruminant nutrition and ruminant production but collegians gathering material for teaching practices.
Download or read book Ruminant Nutrition written by Robert Jarrige and published by John Libbey Eurotext. This book was released on 1989 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with feed evaluation systems, the nutrient requirements of ruminant livestock and the feeding value of a wide range of feedstuffs. This book lists about 800 typical forages, 65 crop residues and 120 concentrate and by-product feeds. It is suitable for teachers, specialist scientists and industrialists.
Download or read book Amino Acids in Animal Nutrition written by J. P. Felix D'Mello and published by Cabi. This book was released on 2003 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amino acid metabolism and nutrition of farm animals continues to be an active area of research. However, since the publication of the first edition, as Amino Acids in Farm Animal Nutrition (1994), there is now a need to take into account advances in the amino acid nutrition of a wider range of animals, including companion animals. In this new edition, the editor has attempted to retain chapter imparting strength to the first version, while introducing authors with new ideas and vision, as well as chapters on other animals such as cats and dogs. The book is thematically structured. Part 1 includes chapter of an introductory and general nature with applications to a wide range of animal species. The next four parts are species-related sections, including pigs, poultry, ruminants and other animals. The chapters in the final section cover applications and perspectives. The book has been written as a reference work for advanced students as well as researchers in animal nutrition.
