Download or read book Determining the Optimal DIle dLys Ratio for Ross 708 X Ross YP Male Broilers Throughout Multiple Grow Out Phases Starter Grower and Finisher written by Andrew Taylor Brown and published by . This book was released on 2021 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within commercial broiler production, feed and feed manufacturing costs account for 60 to 70% of production costs. Of these feed costs specifically, ingredients that supply energy and protein represent the highest expenditure, verifying the importance of knowing the nutrient requirements of current broiler strains to ensure accurate least-cost formulation. To reduce these production costs and optimize performance, primary breeder companies and nutritionists continuously strive to improve nutrient utilization of commercial broiler strains. As a result of this, a great magnitude of work is conducted to determine the nutrient requirements for broilers, especially amino acids. Therefore, the overall objective of this dissertation was to utilize processing measurements, multiple statistical models, and economics as a whole to determine the optimal percent digestible Isoleucine:digestible Lysine ratio (dIle:dLys) for Ross 708 x Ross YP male broilers to improve growth performance and economic return. Chapter 2 determined the optimal dIle:dLys ratio for the starter phase (d 0-18), while Chapter 3 determined the optimal ratio for the grower phase (d 14-28), and Chapter 4 determined the optimal ratio for the finisher phase (d 28-42). All experimental diets for each respective growth phase were created from a common deficient corn and soybean meal-based diet. After manufacturing, half was retained to create the summit diet through the addition of crystalline Ile. The remaining five experimental diets for each respective growth phase were obtained by blending proportions of the deficient and summit diets. All dIle:dLys ratios were estimated using quadratic regression (QR; 95% of the asymptote), as well as linear and quadratic broken line models (LBL; QBL). Regression analysis from d 0-18 using multiple regression models estimated the ratios to range from 63-73% for BW and BWG and 68-74% for FCR. Based on the data from the grower phase and using multiple regression models, the estimated ratios ranged from 62-68% for BW and BWG and 67-70% for FCR and are similar to the current breeder nutrient specifications. Data from the finisher phase and once again using multiple regression models estimated the ratios to range from 62-66% for BW and BWG and 63-66% for FCR.
Download or read book Determination of Methionine and Lysine Requirements of Growing Broilers Using the Ideal Protein Concept written by Changji Lu and published by . This book was released on 2012 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three experiments were conducted to evaluate the responses of broiler performance to Lysine (Lys) and Methionine (Met) during the starter, grower, and finisher feeding phases. All the experimental diets were formulated based on the Ideal Protein Concept. Experiment 1 evaluated the responses to Lys and Met on live performance of young broiler chickens from 0 to 18 d of age. The mean amino acid ratios to Lys suggested by literature values were used in the formulation based on the Ideal Protein Concept. Six levels of Lys and eight levels of supplemental Met were used in the diets resulting in a total of 48 experimental treatments. There were significant effects of Lys levels and added Met levels on feed intake (FI), body weight (BW) and feed conversion ratio (FCR) ( P≤0.05). Significant interactions were also observed between Lys and added Met in response to these parameters (P≤0.05). There were differences in the estimated ratios of Met or total sulfur amino acids (TSAA) to Lys required for optimizing FI, BW, and FCR for chicks fed different Lys levels. These results indicated that the optimal ratios of indispensable amino acids to Lys may depend on dietary Lys level in the diet. Experiment 2 evaluated the response to Lys and Met in diets on live performance of young broiler chickens during the grower period of 14-35 d. Experimental diets were designed similarly as the experiment 1 with six levels of Lys and eight levels of supplemental Met. Two consecutive trials using the same experimental diets were conducted with identical design. There were significant effects of dietary Lys levels on FI, BW and FCR (P≤0.05), with optimal Lys level for FI, BW and FCR of 1.20, 1.10 and 1.12, respectively. There were significant effects of added Met levels on BW and FCR (P≤0.05). No significant interactions between Lys and Met were observed based on FI, BW and FCR. There were differences in the estimated ratios of Met or TSAA to Lys required for optimizing FI, BW, and FCR for broiler chickens fed different Lys levels. Results of this study suggest that the response to variation in Lys level is independent of Met level and optimal ratio of Met or TSAA to Lys varies with different dietary Lys level in the diets. Experiment 3 was conducted to evaluate the response to Lys and Met in diets on live performance of broiler chickens during the finisher period of 35-49 d. Similar design as the previous two experiments was used with six levels of Lys and four levels of supplemental Met. There were significant effects of dietary Lys levels on body weight gain (BWG) and FCR, with optimal Lys level for BWG and FCR of 1.01 and 1.05, respectively. There was a significant effect of supplemental Met on FCR. No significant interactions were observed between Lys and supplemental Met for FI, BWG, and FCR. Increasing Lys level significantly improved dressing percentage and breast meat yield. There were differences in the estimated ratios of Met or TSAA to Lys required for optimizing FI, BWG, and FCR for broiler chickens fed different Lys levels. Results of this study suggest that the response to variation in Lys level is independent of Met level in broiler finisher diets and that the ideal amino acid profile may depend on the Lys level in the diets. In conclusion, the ideal ratios of Met and TSAA to Lys based on the Ideal Protein Concept vary for broiler chickens fed different Lys level in the diets at each of the growing phases.
Download or read book Managing Cover Crops Profitably 3rd Ed written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Download or read book Effects of Methionine Supplement Sources and Crude Protein on Ross 708 By product Male Performance and Carcass Yield written by Darby Boontarue and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precise feed formulation is crucial for efficient poultry production. Amino acids (AA) play an integral role as constituents of digestible proteins, predominantly sourced from soybean meal in broiler diets. However, synthetic AAs offer alternatives and formulations closer to bird requirements. Excessive AAs may result in poor litter quality and footpad dermatitis, while excess nitrogen (N) excretion may raise environmental concerns. The growing availability of synthetic AAs and the adoption of the ideal protein concept enable the formulation of diets with lower crude protein (CP) content without compromising performance. Namely, methionine (Met) supplementation is of high priority due to it being the first limiting AA in a corn-soybean meal diet. Nutritionists have access to various ingredients that fulfill the Met requirements of broilers. Amino acids, such as DL-Methionine, are nearly 100% bioavailable while methionine hydroxy analogs are shown to be relatively less bioavailable. Thus, a 42d experiment compared the efficacy of a 65% DL-Methionine and 35% limestone dilution product (65DLM) to a methionine hydroxy analog (MHA) product in a sulfur AA-deficient diet. The impact of CP level, Met supplement sources, and their interaction was assessed on growth performance, carcass traits, footpad lesion scores (FLS), and litter moisture. A total of 3,072 Ross 708 by-product males received diets varying in Met source (none, MHA, or 65DLM) and CP (Standard (SCP) or Reduced 2% (RCP)). Treatments were arranged in a 2 x 3 factorial in a randomized complete block design. Each treatment was fed to 16 replicate floor pens with 32 birds/pen across a 3-phase feeding program. Performance was measured during the starter (d1-10), grower (d11-24), finisher (d25-42), and overall (d1-42) periods. On d24 and 42, litter was collected to determine litter moisture, and three birds/pen were selected for FLS. On d42, three birds/pen were selected for processing yield. Overall, regardless of Met source, RCP-fed birds showed reduced performance compared to their counterpart SCP treatments. Birds fed SCP diets increased litter moisture when compared to birds fed RCP diets. Likewise, birds fed either MHA or 65DLM had higher litter moisture content than birds provided a diet with no Met supplementation. On d42, majority of FLS across all treatments were a score of "0". Breast weight was highest when 65DLM was included in SCP diets and reduced when MHA was provided in either RCP or SCP diets. Overall, this experiment indicated that 65DLM can replace MHA in a diet marginally deficient in total sulfur AAs to achieve similar performance and improve breast weight.
Download or read book Poultry Quality Evaluation written by Massimiliano Petracci and published by Woodhead Publishing. This book was released on 2017-08-01 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poultry Quality Evaluation: Quality Attributes and Consumer Values provides a new reference source that covers these aspects with the same scientific authority as texts on traditional poultry meat quality values. The book's first section explores new developments in our understanding of how muscle structure affects the eating qualities of cooked meat. The second section highlights new techniques for measuring, predicting, and producing poultry meat quality and how these new techniques help us minimize variability in eating quality and/or maximize value. The final section identifies the current qualities of consumer and public perceptions, including what is sustainable, ethical, desirable, and healthy in poultry production and consumption. Brings together top researchers in the field to provide a comprehensive overview of the new elements of poultry quality evaluation Provides a comprehensive reference source on poultry with the same scientific authority as texts on more broad traditional meat quality values Contains contributions from editors who are very well known and highly respected in the field
Download or read book Poultry Science written by Colin G. Scanes and published by Waveland Press. This book was released on 2019-11-06 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poultry production continues to make tremendous advances. This thoroughly revised fifth edition of Scanes’ seminal, comprehensive text presents students and professionals alike with valuable, research-based material relevant to all stages of a poultry career. Areas covered include global and commercial poultry production; poultry business organization; and production of meat chickens (broilers), turkeys, eggs, ducks, geese, game birds, and other poultry. Other chapters cover the fundamental science behind production: poultry biology, genetics, behavior, diseases/health, housing, ventilation, and processing. New or greatly expanded sections cover biosecurity; poultry stress/welfare; feed additives; food safety; incubation; controlling pests; poultry waste and environmental issues; brooding; and organic, free-range, and niche poultry production. “Points for Discussion” and “Deeper Dive” sections highlight key examples and provide further context and empirical data for critical areas in poultry production, giving students a first-hand look at issues in both small and large operations. The book concludes with an in-depth, invaluable chapter on applying for internships and positions for the start of a successful career.
Download or read book HACCP and ISO 22000 written by Ioannis S. Arvanitoyannis and published by John Wiley & Sons. This book was released on 2009-11-09 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food Safety is an increasingly important issue. Numerous foodcrises have occurred internationally in recent years (the use ofthe dye Sudan Red I; the presence of acrylamide in various friedand baked foods; mislabelled or unlabelled genetically modifiedfoods; and the outbreak of variant Creutzfeldt-Jakob disease)originating in both primary agricultural production and in the foodmanufacturing industries. Public concern at these and other eventshas led government agencies to implement a variety of legislativeactions covering many aspects of the food chain. This book presents and compares the HACCP and ISO 22000:2005food safety management systems. These systems were introduced toimprove and build upon existing systems in an attempt to addressthe kinds of failures which can lead to food crises. Numerouspractical examples illustrating the application of ISO 22000 to themanufacture of food products of animal origin are presented in thisextensively-referenced volume. After an opening chapter whichintroduces ISO 22000 and compares it with the well-establishedHACCP food safety management system, a summary of internationallegislation relating to safety in foods of animal origin ispresented. The main part of the book is divided into chapters whichare devoted to the principle groups of animal-derived foodproducts: dairy, meat, poultry, eggs and seafood. Chapters are alsoincluded on catering and likely future directions. The book is aimed at food industry managers and consultants;government officials responsible for food safety monitoring;researchers and advanced students interested in food safety.
Download or read book Chicken Nutrition written by Rick Kleyn and published by . This book was released on 2013 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book 30th Scientific Experts Conference of Agriculture and Food Industry written by Muhamed Brka and published by Springer Nature. This book was released on 2020-02-03 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of the 30th Scientific-Experts Conference of Agriculture and Food Industry, held on September 26-27, 2019, in Sarajevo, Bosnia and Herzegovina. It reports on the application of innovative technologies in food sciences and agriculture, and covers research in plant and animal production, agricultural economics and food production. Further, the book discusses key social and environmental issues, and proposes answers to current challenges. The conference was jointly organized by the Faculty of Agriculture and Food Sciences of the University of Sarajevo, Bosnia and Herzegovina, the Faculty of Agriculture of Ege University, Turkey, the Bosnia and Herzegovina Medical and Biological Engineering Society, and the Faculty of Agriculture of the University of Belgrade, Serbia. The proceedings offer a timely snapshot of cutting-edge, multidisciplinary research and developments in modern agriculture. As such, they address the needs of researchers and professionals, agricultural companies, food producers, and regulatory and food safety agencies.
Download or read book The Welfare of Domestic Fowl and Other Captive Birds written by Ian J. H. Duncan and published by Springer Science & Business Media. This book was released on 2009-12-29 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Animal welfare is attracting increasing interest worldwide, especially in developed countries where the knowledge and resources are available to (at least potentially) provide better management systems for farm animals, as well as companion, zoo and laboratory animals. The key requirements for adequate food, water, a suitable environment, appropriate companionship and good health are important for animals kept for all of these purposes. There has been increased attention given to farm animal welfare in many co- tries in recent years. This derives largely from the fact that the relentless pursuit of nancial reward and ef ciency, to satisfy market demands, has led to the devel- ment of intensive animal production systems that challenge the conscience of many consumers in those countries. In developing countries, human survival is still a daily uncertainty, so that p- vision for animal welfare has to be balanced against human needs. Animal welfare is usually a priority only if it supports the output of the animal, be it food, work, clothing, sport or companionship. In principle the welfare needs of both humans and animals can be provided for, in both developing and developed countries, if resources are properly husbanded. In reality, however, the inequitable division of the world’s riches creates physical and psychological poverty for humans and a- mals alike in many parts of the world.
Download or read book Using JMP Student Edition written by SAS Publishing and published by . This book was released on 2009-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using JMP Student Edition is the official user guide for JMP Student Edition, the streamlined edition of JMP for first year statistics students. Clearly written, with easy-to-follow, step-by-step instructions, this book provides engaging illustrations and concept overviews. Chapters cover not only such JMP basics as importing data, univariate and bivariate data analysis, but also more complex analyses including Multiple Regression, Time Series, Design of Experiments, and Quality Control. JMP Student Edition software is available from major textbook publishers when packaged with their textbooks for course use.
Download or read book Comparative Nutrition of Fowl Swine written by Edwin T. Moran and published by Guelph, Ont. : E.T. Moran : Office for Educational Practice, University of Guelph. This book was released on 1982 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food seeking; Oral complex; Esophagus-deglutition; Gastric digestion; Small intestine - liver - pancreas complex; Large intestinal complex.
Download or read book Broom and Fraser s Domestic Animal Behaviour and Welfare 6th Edition written by Donald M. Broom and published by CABI. This book was released on 2021-11-17 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely updated and revised, and synthesizing the recent explosion in animal welfare literature, the sixth edition of this best-selling textbook continues to provide a thorough overview of behaviour and welfare of companion and farm animals, including fish. The introductory section has been completely revised, with all following chapters updated, redesigned and improved to reflect our changing understanding. Written by a world-leading expert and key opinion leader in animal behaviour and welfare, this text provides a highly accessible guide to the subject. It is an essential foundation for any veterinary, animal science, animal behaviour or welfare-focused undergraduate or graduate course.
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer. This book was released on 1976 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.
Download or read book Functional Carbohydrates written by Jian Chen and published by CRC Press. This book was released on 2017-10-02 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Functional carbohydrates" is the term used to describe those carbohydrates that play an important role in strengthening immunity, decreasing the level of blood-lipid, and regulating the intestinal flora of humans, beyond those simply used as the energy-supplying materials. To date functional carbohydrates mainly cover dietary fiber, functional polysaccharides, functional oligosaccharides, sugar alcohols, and other functional monosaccharides. Functional Carbohydrates: Development, Characterization, and Biomanufacture facilitates tracking the important progresses in functional carbohydrates. This book addresses the history and recent developments of a selected number of important functional carbohydrates and it introduces the source, properties, and applications of a number of functional carbohydrates. It describes in detail the biomanufacture of these carbohydrates based on fermentation or enzyme catalysis, including the strain screening and improvement, optimization of fermentation process, and product downstream processing.
Download or read book Managing Cover Crops Profitably written by Sustainable Agriculture Network and published by . This book was released on 1998 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
