Amino Acid Supplements for Low Protein Broiler Diets PDF Download

Author: John Dorsey Cole
Publisher:
ISBN:
Category : Amino acids
Languages : en
Pages : 84

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

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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: Otto Mario Marin-Ramirez
Publisher:
ISBN:
Category : Amino acids
Languages : en
Pages : 218

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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: Hassan Istaytiyyah
Publisher:
ISBN:
Category : Broilers (Chickens)
Languages : en
Pages : 130

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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: Qi Jiang
Publisher:
ISBN:
Category : Broilers (Chickens)
Languages : en
Pages : 134

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

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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: Jianlin Si
Publisher:
ISBN:
Category : Broilers (Chickens)
Languages : en
Pages : 166

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

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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: Kristjan Bregendahl
Publisher:
ISBN:
Category :
Languages : en
Pages : 118

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In Trials 3 and 4, dietary concentrations of crystalline EAA and NEAA, respectively, were increased incrementally in the low-CP diets (19 to 20% CP). Chicks fed the intact-protein diet (Trial 1) grew faster, utilized feed more efficiently, and retained more N (P

Author: Elizabeth Ruth McGill
Publisher:
ISBN:
Category : Amino acids in animal nutrition
Languages : en
Pages : 99

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Book Description
A series of experiments were conducted to examine the effects of feeding low crude protein (CP) corn and soybean meal diets with crystalline amino acid supplementation to broilers from 0-3 weeks of age. It was hypothesized that these diets would support similar growth to birds consuming standard NRC-type diets. The first two experiments utilized a 23% CP positive control ration and several 15% CP rations with different combinations of amino acids added back to meet or exceed NRC requirements. In Experiment 1, body weight gain was found to be significantly greater (P [lesser than] 0.05) in birds consuming the control ration. In Experiment 2, there were no differences (P [greater than] 0.05) among any of the treatments. This experiment supported the original hypothesis. The next two experiments were conducted with the objective of testing the effects of feeding 13% CP diets with various protein equivalents on the performance of broilers. Performance was found to be significantly reduced (P [lesser than] 0.05) in birds consuming the 13% CP diets. The final two experiments were conducted in order to determine how the addition of meat and bone meal (MBM) or various levels of added fat may affect performance in broilers consuming low CP diets. The addition of MBM or dietary fat did not result in the same growth as the high CP control rations. These experiments indicate that a 15% crude protein ration with crystalline amino acid supplementation can support similar performance (P [greater than] 0.05) when compared to an NRCtype 23% crude protein diet.