Studies on the Effect on the Nutrition of Chicks and Performance of Laying Hens of Certain Amino Acids in the Diet PDF Download

Author: Louis Everard Marrett
Publisher:
ISBN:
Category : Amino acids
Languages : en
Pages : 184

View

Book Description

Author: Guoyao Wu
Publisher: Springer Nature
ISBN: 3030544621
Category : Medical
Languages : en
Pages : 256

View

Book Description
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.

Author: Vincenzo Tufarelli
Publisher: MDPI
ISBN: 3039438530
Category : Science
Languages : en
Pages : 754

View

Book Description
The aim of this Special Issue is to publish high quality papers concerning poultry nutrition and the interrelations between nutrition, metabolism, microbiota and the health of poultry. Therefore, I invite submissions of recent findings, as original research or reviews, on poultry nutrition, including, but not limited to, the following areas: the effect of feeding on poultry meat end egg quality; nutrient requirements of poultry; the use of functional feed additives to improve gut health and immune status; microbiota; nutraceuticals; soybean meal replacers as alternative sources of protein for poultry; the effects of feeding poultry on environmental impacts; the use of feed/food by-products in poultry diet; and feed technology.

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309048923
Category : Technology & Engineering
Languages : en
Pages : 174

View

Book Description
This classic reference for poultry nutrition has been updated for the first time since 1984. The chapter on general considerations concerning individual nutrients and water has been greatly expanded and includes, for the first time, equations for predicting the energy value of individual feed ingredients from their proximate composition. This volume includes the latest information on the nutrient requirements of meat- and egg-type chickens, incorporating data on brown-egg strains, turkeys, geese, ducks, pheasants, Japanese quail, and Bobwhite quail. This publication also contains new appendix tables that document in detail the scientific information used to derive the nutrient requirements appearing in the summary tables for each species of bird.

Author: S. Leeson
Publisher: Nottingham University Press
ISBN: 190476178X
Category : Science
Languages : en
Pages : 413

View

Book Description
Covering a variety of essential topics relating to commercial poultry nutrition and production—including feeding systems and poultry diets—this complete reference is ideal for professionals in the poultry-feed industries, veterinarians, nutritionists, and farm managers. Detailed and accessible, the guide analyzes commercial poultry production at a worldwide level and outlines the importance it holds for maintaining essential food supplies. With ingredient evaluations and diet formulations, the study's compressive models for feeding programs target a wide range of commercially prominent poultry, including laying hens, broiler chickens, turkeys, ducks, geese, and game birds, among others.

Author: M. Francesch
Publisher: BRILL
ISBN: 9086868517
Category : Technology & Engineering
Languages : en
Pages : 307

View

Book Description
This book brings together 19 full length manuscripts from invited speakers and nearly 300 abstracts from oral and poster communications presented at the 21st European Symposium on Poultry Nutrition held in Salou/Vila-seca, Spain in May 2017. The invited papers address aspects of poultry nutrition such as feed intake and thermoregulation, feeding strategies and gastrointestinal health, precision feeding (feeding strategies and nutrient requirements), optimized use of feed ingredients, and other hot topics such as updating P requirements of broilers, mycotoxins and future perspectives of poultry production. The open communication abstracts deal with the latest research on poultry nutrition, including feed raw materials, protein sources and amino acids, feed additives and enzymes, nutrition and gut health, mineral nutrition, among other topics.

Author: Aaron Herman Spandorf
Publisher:
ISBN:
Category : Amino acids
Languages : en
Pages : 350

View

Book Description

Author: J.van Harn
Publisher:
ISBN:
Category :
Languages : en
Pages : 41

View

Book Description
Providing laying hens diets with a reduced crude protein (CP) content that are supplemented with free amino acids (AA) to cover the AA requirement might be helpful in reducing the soybean meal content of Latin American origin, and thus in reducing the amount of non-EU protein in the diet. This report describes the results of an experiment in which the effects of low CP diets, with a partial replacement of soybean meal by free AA, on laying performance, egg quality, and N-excretion were evaluated in laying hens from 39-51 weeks of age.

Author: Patricia Hester
Publisher: Academic Press
ISBN: 0128011513
Category : Technology & Engineering
Languages : en
Pages : 648

View

Book Description
Egg Innovations and Strategies for Improvements examines the production of eggs from their development to human consumption. Chapters also address consumer acceptance, quality control, regulatory aspects, cost and risk analyses, and research trends. Eggs are a rich source of macro- and micronutrients which are consumed not only by themselves, but also within the matrix of food products, such as pastas, cakes, and pastries. A wholesome, versatile food with a balanced array of essential nutrients, eggs are a stable of the human diet. Emerging strategies entail improvements to the composition of eggs via fortification or biological enrichment of hen's feed with polyunsaturated fatty acids, antioxidants, vitamins, or minerals. Conversely, eggs can be a source of food-borne disease or pollutants that can have effects on not only human health, but also egg production and commercial viability. Written by an international team of experts, the book presents a unique overview of the biology and science of egg production, nutrient profiling, disease, and modes for increasing their production and quality. Designed for poultry and food scientists, technologists, microbiologists, and workers in public health and the food and egg industries, the book is valuable as an industrial reference and as a resource in academic libraries. - Focuses on the production and food science aspects of eggs - Includes a broad range of microbial contaminants, their risks, and prevention, as well as non-microbial contaminant risks - Presents analytical techniques for practical application

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309031818
Category : Science
Languages : en
Pages : 169

View

Book Description