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Author: Hassan Istaytiyyah Publisher: ISBN: Category : Broilers (Chickens) Languages : en Pages : 130
Book Description
Two experiments were conducted to study the effect of lowering the protein level, while giving a minimum essential amino acids requirement, and supplement fat on broilers' performance. The first experiment was carried during a starter period and was conducted on 320 day-old chicks to 28 days old, and divided into 4 dietary treatments, of eight replicates with ten chicks each. The dietary treatments were a) conventional type diet without additional fat, b) conventional type diet with 5% corn oil, c) low protein diet without additional fat, d) low protein diet with 5% corn oil. The second experiment was carried out during a grower-finisher period (28 to 49 days old), and was conducted under two temperature regimens: 32 +_ 1°C constant or 17 to 30°C cyclic. The same dietary treatments (but using grower requirements) and replicates number but of three chicks each were used as in the first experiment. Results of the first experiment indicated that the use of low protein had an adverse effect on broilers' performance, and that supplemental fat to conventional diets improved conversion rate and body weight gain significantly (P
Author: Hassan Istaytiyyah Publisher: ISBN: Category : Broilers (Chickens) Languages : en Pages : 130
Book Description
Two experiments were conducted to study the effect of lowering the protein level, while giving a minimum essential amino acids requirement, and supplement fat on broilers' performance. The first experiment was carried during a starter period and was conducted on 320 day-old chicks to 28 days old, and divided into 4 dietary treatments, of eight replicates with ten chicks each. The dietary treatments were a) conventional type diet without additional fat, b) conventional type diet with 5% corn oil, c) low protein diet without additional fat, d) low protein diet with 5% corn oil. The second experiment was carried out during a grower-finisher period (28 to 49 days old), and was conducted under two temperature regimens: 32 +_ 1°C constant or 17 to 30°C cyclic. The same dietary treatments (but using grower requirements) and replicates number but of three chicks each were used as in the first experiment. Results of the first experiment indicated that the use of low protein had an adverse effect on broilers' performance, and that supplemental fat to conventional diets improved conversion rate and body weight gain significantly (P
Author: Guoyao Wu Publisher: Springer Nature ISBN: 3030544621 Category : Medical Languages : en Pages : 256
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: C. L. Walk Publisher: Brill Wageningen Academic ISBN: 9789086862900 Category : Animal nutrition Languages : en Pages : 0
Book Description
Incorporating research chapters from academic authors around the world, this book focuses on the most recent scientific advances in understanding phytate; both IP6 and its esters. It examines phytate degradation patterns in the gastrointestinal tract, and investigates the relevance of gut microbiome and endogenous phosphatases on phytate breakdown, as well as regulation and functions of inositol diphosphates IP3, IP4, and IP7, IP8. It also identifies recommendations for formulating for minerals and amino acids in the presence of phytate, including the effects of phytase on protein bioavailability, and the impact of digestible Ca and P in both swine and poultry. This leading science and research is coupled with real-world pragmatism, including a focus on what industry stakeholders are currently doing to counter dietary phytate, and an overview of the role of nutrition in respect of bone health, meat quality, welfare, and antibiotic free production. As such, the content is relevant for scientists, nutritionists and producers alike.
Author: National Research Council Publisher: National Academies Press ISBN: 0309048923 Category : Technology & Engineering Languages : en Pages : 174
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: Otto Mario Marin-Ramirez Publisher: ISBN: Category : Amino acids Languages : en Pages : 218
Book Description
The first study was undertaken to determine the feasibility of supplementing low protein diets with the two most commonly limiting amino acids in laying diets methionine and lysine. Individually caged incrossbred pullets were subjected to eight different treatments for twelve 28-day periods. A positive control diet containing 16.3% animal and plant protein, 2068 kcal./kg. productive energy, 0.778%, lysine and 0.536% methionine plus cystine, was compared to a negative control 14% plant protein diet formulated to contain 0.656% lysine, 0.460% methionine plus cystine and 2068 kcal./kg. productive energy. This diet was supplemented with 0.075% and 0.125% methionine; 0.050% and 0.100% lysine; 0.075% methionine plus 0.050% lysine and 0.125% methionine plus 0.100% lysine, respectively. Egg production, egg size and feed efficiency were approximately equal for the unsupplemented 14% protein and for this diet supplemented with either 0.075%, 0.125% methionine or 0.050%, 0.100% lysine. The combination of methionine plus lysine at the lower level significantly improved these economic traits and was greater than or equal to the response to the higher of both or to the positive control diet. The second study was undertaken to study the performance of commercial broilers. Fourteen diets containing either glandless cottonseed meal (GCSM), cottonseed meal (CSM), sesame meal (SM), soybean meal (SBM), or combination of these plant protein sources, with and without amino acid supplementation, (methionine and/or lysine) end in each case contributing the same total amount of crude protein, were compared to each other and to a positive animal and plant protein control diet. ...
Author: S. Leeson Publisher: Nottingham University Press ISBN: 190476178X Category : Science Languages : en Pages : 413
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: J. P. Felix D'Mello Publisher: Cabi ISBN: 9780851996547 Category : Medical Languages : en Pages : 513
Book Description
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.
Author: Hassan Istaytiyyah
Author: Hassan Istaytiyyah
Author: Guoyao Wu
Author: Milan Hrubý
Author: Qi Jiang
Author: C. L. Walk
Author: National Research Council
Author: Otto Mario Marin-Ramirez
Author: S. Leeson
Author: J. P. Felix D'Mello
Author: Maria Urdaneta Rincon