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Author: Navjot Kaur Nandha Publisher: ISBN: Category : Languages : en Pages : 242
Book Description
Three experiments were conducted to determine the AID and SID of protein and AA in pea protein isolate (PPI), distiller's dried grains with solubles derived from a blend of wheat and corn (wcDDGS) and corn. In addition, 2 experiments were conducted to estimate the requirements of digestible SAA (dSAA) and digestible lysine (dLYS) for 3-week old broilers to obtain optimum growth performance(BWG, FCR), and optimum yield performance(CY, BMY and TDY). For digestibility studies, day-old male Ross 308 broiler chicks were fed test diets from day 1-14. The test-diets were balanced for vitamins and minerals and contained chromic oxide (0.3%) as an indigestible marker. The protein and AA digestibilities were determined either by direct or indirect method. For requirement studies, day-old male Ross 308 broiler chicks were fed lysine- or SAA deficient basal diets balanced for all other AA, except for the AA under test, according to the ideal protein concept. All test diets were also balanced for vitamins and minerals and were kept isonoitrogenous and isocaloric within each assay. The average SID estimates (%) of AA were 92.4, 71.5 and 93.3 in PPI, wcDDGS and corn, respectively. Using regression analysis, the dietary dLYS requirement estimates (%) were 1.12 and 1.13 for BWG and FCR, respectively. The dietary dSAA requirement estimate was 0.81% for BWG while no significant response was observed for FCR. Both CY and BMY increased cubically with increasing levels of dLYS, whereas, CY didnot respond significantly and BMY increased linerally with the increasing levels of dSAA.
Author: Navjot Kaur Nandha Publisher: ISBN: Category : Languages : en Pages : 242
Book Description
Three experiments were conducted to determine the AID and SID of protein and AA in pea protein isolate (PPI), distiller's dried grains with solubles derived from a blend of wheat and corn (wcDDGS) and corn. In addition, 2 experiments were conducted to estimate the requirements of digestible SAA (dSAA) and digestible lysine (dLYS) for 3-week old broilers to obtain optimum growth performance(BWG, FCR), and optimum yield performance(CY, BMY and TDY). For digestibility studies, day-old male Ross 308 broiler chicks were fed test diets from day 1-14. The test-diets were balanced for vitamins and minerals and contained chromic oxide (0.3%) as an indigestible marker. The protein and AA digestibilities were determined either by direct or indirect method. For requirement studies, day-old male Ross 308 broiler chicks were fed lysine- or SAA deficient basal diets balanced for all other AA, except for the AA under test, according to the ideal protein concept. All test diets were also balanced for vitamins and minerals and were kept isonoitrogenous and isocaloric within each assay. The average SID estimates (%) of AA were 92.4, 71.5 and 93.3 in PPI, wcDDGS and corn, respectively. Using regression analysis, the dietary dLYS requirement estimates (%) were 1.12 and 1.13 for BWG and FCR, respectively. The dietary dSAA requirement estimate was 0.81% for BWG while no significant response was observed for FCR. Both CY and BMY increased cubically with increasing levels of dLYS, whereas, CY didnot respond significantly and BMY increased linerally with the increasing levels of dSAA.
Author: J. M. McNab Publisher: Cabi ISBN: 9780851994642 Category : Nature Languages : en Pages : 427
Book Description
This book presents the proceedings of the 26th Poultry Science Symposium, held in Peebles, Scotland. Dealing with all aspects of feedstuffs, the papers have been written by international authorities. Contents include: An appraisal of fatty acids; digestibility & bioavailability of protein and amino acids; vitamins in feedstuffs; non-starch polysaccharides: effects on nutritive value; and visual & tactile cues perceived by chickens.
Author: Elizabeth J. Kim Publisher: ISBN: Category : Languages : en Pages :
Book Description
The protein requirement for poultry is actually a requirement for amino acids. Recently, there has been much interest in formulating diets on a digestible amino acid basis. The most accepted methods of determining amino acid digestibility are the precision-fed cecectomized rooster assay (PFR) and standardized ileal chick assay (SID). The PFR involves tube-feeding cecectomized adult roosters and excreta are then quantitatively collected for amino acids. For the SID, 3-week-old broiler chicks are ad libitum fed a semi-purified diet with the test ingredient added as a sole source of protein for a period of several days. The animals are then euthanized and ileal digesta are collected and analyzed for amino acids. When these two methods were compared for 15 feed ingredients, standardized amino acid digestibility was found to vary among feed ingredients and among samples of the same ingredient. There were generally no differences in amino acid digestibility for six corn and four distiller0́9s dried grains with solubles (DDGS) samples between the two methods. The PFR did yield significantly (P
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: W. Haresign Publisher: Elsevier ISBN: 148310026X Category : Technology & Engineering Languages : en Pages : 200
Book Description
Recent Advances in Animal Nutrition-1981 is a collection of papers that discusses the effects of dietary fat on milk composition, relating it to the biochemistry of fat synthesis in the mammary gland. The influence of concentrates on milk composition as well as the pattern and level of concentrate feeding on milk output are also covered. The book describes the need for better utilization of grass and grass products in dairy production, the mineral and trace element requirements of pigs; the importance of anion-cation balance in poultry diets and its effects on performance levels; and the selenium and cobalt requirements of ruminants. The problems of medicinal residues in animal products and the toxicological effects of aflatoxin residues in animal products are also considered. People involved in agriculture, dairy production and animal nutrition will find the book useful.
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: Vincenzo Tufarelli Publisher: MDPI ISBN: 3039438530 Category : Science Languages : en Pages : 754
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: Elwyn R. Miller Publisher: Butterworth-Heinemann ISBN: 1483162117 Category : Technology & Engineering Languages : en Pages : 692
Book Description
Swine Nutrition is a comprehensive text-reference that deals with the various aspects and knowledge in swine nutrition. The book is basically about nutrient utilization by swine. The topics discussed concerning this subject are factors influencing swine nutrition, nutrient bioavailability, appetite and feeding behavior, physical forms of feed, environment and management, immunocompetence, genetic and sex considerations, mycotoxins, and intestinal microbiology. Major and unique feedstuffs, feeding regimen in different stages of growth, and techniques in swine nutrition research are also elaborated. The text will be useful to students of advance swine nutrition courses as well as those seeking information in swine nutrition.
Author: Navjot Kaur Nandha
Author: Navjot Kaur Nandha
Author: T. Veldkamp
Author: J. M. McNab
Author: Elizabeth J. Kim
Author: C. L. Walk
Author: W. Haresign
Author: Guoyao Wu
Author: Arash Bandegan
Author: Vincenzo Tufarelli
Author: Elwyn R. Miller