Download or read book Polyunsaturated Fatty Acid Metabolism in Broiler Chickens written by Jaime Bautista Ortega and published by . This book was released on 2008 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three experiments were conducted in broiler hens to study the influence of dietary n-3 polyunsaturated fatty acids (PUFA) on egg quality, antioxidant status in progeny, and eicosanoid production in tissue. The objective of experiment 1 was to determine the effect of hen age and dietary n-3 PUFA on egg quality and hatchability. Two-hundred-twenty breeder chicks (males and females) (Cobb Breeders) were raised until 20 weeks of age following the company guidelines. At this age, 3 groups of birds (24 breeder hens and 3 roosters) were randomly allocated to one of the following dietary treatments: 3.5% sunflower oil (Low n-3 diet), 1.75% sunflower oil + 1.75% fish oil (Medium n-3 diet) or 3.5% fish oil (High n-3 diet). Egg quality was evaluated at 29, 37 and 45 weeks of age by determining total egg weight, its components (albumen, yolk and shell) and shell thickness. Total fat content in the yolk and its fatty acid profile was also determined. Egg production was recorded daily. Breeder hens fed the High n-3 diet laid lighter eggs with lighter yolks, albumens and shells than those fed the Medium and Low n-3 diets (p

Download or read book Poultry Nutrition written by Vincenzo Tufarelli and published by MDPI. This book was released on 2021-01-06 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Fatty Acid Digestion Synthesis and Metabolism in Broiler Chickens and Pigs written by Willem Smink and published by . This book was released on 2012 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Manipulating Adipose Tissue Fatty Acid Oxidation to Reduce Fatness in Broiler Chickens written by Tania Emmanuelle Torchon and published by . This book was released on 2015 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compared to rodents, broiler chickens, those reared for meat, are an attractive model for studies of adipose biology, and obesity development in children. The broiler chicken lacks the gene for uncoupling protein 1, the hallmark for brown adipose tissue making them a useful model to study lipid metabolism in white adipocytes. Two studies were performed to investigate if white adipose tissue had the metabolic ability for fatty acid oxidation (FAO), and to investigate the effects of dietary fatty acids on abdominal fat development of young broiler chickens as a model for childhood obesity. In study one, chickens were fasted for three, five, and seven hours. Afterwards, the oxidative flux from the citric acid cycle, and the citrate synthase enzyme activity were measured in white adipose tissue. In study two, young Cobb500 broilers, from age seven to 21 days, were fed isocaloric diets prepared using lard (primarily saturated), corn oil (primarily monounsaturated), flaxseed oil (enriched in alpha linolenic acid (ALA, 18:3, n-3)), or fish oil (enriched in eicosapentaenoic acid (EPA, 20:5, n-3) and docosahexaenoic acid (DHA, 22:6, n-3)), at 8% fat by weight. Physical characteristics, abdominal adipocyte histology, and abdominal adipose tissue gene expression profiles were altered due to dietary fatty acids. Collectively our studies confirm that white adipose tissue has the capacity to increase local FAO by increasing expression of key regulatory enzymes and proteins. Further, by altering the type of fatty acids consumed during childhood, adipose deposition and adipocyte size can be attenuated. These data confirm that FAO can be induced locally in white adipose tissue, dietary long chain n-3 polyunsaturated fatty acids promote reduced adipocyte size, and finally that these data could offer new therapeutic targets to reduce fatness in chickens and children.

Download or read book Polyunsaturated Fatty Acid Metabolism written by Graham C. Burdge and published by Elsevier. This book was released on 2018-05-04 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polyunsaturated Fatty Acid Metabolism explores a number of major roles of PUFA in the body, including its role as a component of cell membranes and how it provides substrates for the synthesis of lipid second messengers. Recent studies are unraveling the effect of interactions between diet and endocrine factors and genetic and epigenetic variation on the regulation of PUFA biosynthesis in animals. Together, these recent findings provide novel insights into the impact of differences in PUFA supply on health. This book captures these findings in a manner that marks the state-of-the-art, placing them in the wider context of PUFA metabolism and nutritional science. Users will find a comprehensive discussion on the topic that presents the contributions of leading researchers who combine their knowledge to create a cohesive academic resource for researchers, those involved in production, and health policymakers. Provides a comprehensive view of polyunsaturated fatty acid metabolism Describes underlying metabolism on lipids that include polyunsaturated fatty acids Includes discussions on recent findings on the genetic and epigenetic regulation of polyunsaturated fatty acid metabolism

Download or read book Fatty Acid Metabolism in Poultry written by Reza Poureslami and published by LAP Lambert Academic Publishing. This book was released on 2010-07 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current dietary recommendations for reducing the risk of cardiovascular diseases underline I) increasing MUFA intake (mainly 18:1n-9) at the expense of SFA intake (mainly 16:0) and II) increasing n-3 LC PUFA intake. Chicken egg and meat are natural sources of n-3 LC PUFA, and their consumption contributes to the intake of these semi-essential nutrients. Many efforts have been made to improve their fatty acid composition however, some aspects remain uncertain. The specific objectives of the present PhD thesis were [1] to study metabolism of fatty acids (accumulation and bioconversion efficiency) in broiler chickens and the impact of dietary fatty acids composition, and animal factors on the fatty acid metabolism, [2] to study the effect of animal factors together with diet on the fatty acid composition of muscles and organs in broiler chickens and [3] to study the interaction effects of dietary fatty acids on the egg yolk fatty acid composition. To fulfill these objectives, three experiments were carried out of which one trial was performed on broiler chicken and the two others on laying hens.

Download or read book Effects of Dietary Biotin and Fatty Acids on Polyunsaturated Fatty Acid Composition of Tissue Lipids in the Chick written by Bruce Alan Watkins and published by . This book was released on 1985 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modulation of Immune Function and Production Performance of Broiler Chickens by Dietary n 3 Polyunsaturated Fatty Acids written by Doug Korver and published by . This book was released on 1997 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lipid Metabolism and the Broiler Chicken written by Brian A. Head and published by . This book was released on 2016 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: In broiler chickens, hepatic lipid metabolism plays a significant role in whole body and muscle fatty acid (FA) incorporation. Flax seed is a rich source of [alpha]-linolenic acid and can be used to increase n-3 FA in poultry meat. Previous studies have shown that flax seed in combination with carbohydrase enzymes in broiler diets enhances long chain (LC) n-3 FA in hepatic tissue. Three experiments were conducted to evaluate the effect of flax seed and carbohydrase enzyme addition on production performance, total tract lipid digestibility, hepatic fatty acid composition, liver lipid class distribution and lipid metabolism in broiler chickens. In Experiment 1, broiler chicks were placed in individual cages and fed isocaloric, isonitrogenous corn-soy diets: Control, Flax (10% flax), and Flax+E (Flax+0.05% enzyme). The diets were fed for a period of 42 days. Total tract digestibility of lipids and FA were assessed from day 19 to 21 of growth. There was no effect of diet on production performance characteristics, including final body weight (BW) or yield of cut-up parts. Flax-based diets reduced total tract lipid digestibility (p

Download or read book Fat Metabolism and Deposition in Poultry Physiology Genetics Nutrition and Interdisciplinary Research Volume I written by Jie Wen and published by Frontiers Media SA. This book was released on 2022-06-27 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Commercial Chicken Meat and Egg Production written by Donald D. Bell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commercial Chicken Meat and Egg Production is the 5th edition of a highly successful book first authored by Dr. Mack O. North in 1972, updated in 1978 and 1984. The 4th edition was co-authored with Donald D. Bell in 1990. The book has achieved international success as a reference for students and commercial poultry and egg producers in every major poultry producing country in the world. The 5th edition is essential reading for students preparing to enter the poultry industry, for owners and managers of existing poultry companies and for scientists who need a major source of scientifically based material on poultry management. In earlier editions, the authors emphasized the chicken and its management. The 5th edition, with the emphasis shifted to the commercial business of managing poultry, contains over 75% new material. The contributions of 14 new authors make this new edition the most comprehensive such book available. Since extensive references are made to the international aspects of poultry management, all data are presented in both the Imperial and Metric form. Over 300 tables and 250 photos and figures support 62 chapters of text. New areas include processing of poultry and eggs with thorough discussions of food safety and further processing. The business of maintaining poultry is discussed in chapters on economics, model production firms, the use of computers, and record keeping. Updated topics include: breeders and hatchery operations; broiler and layer flock management; replacement programs and management of replacements; nutrition; and flock health. New chapters address flock behavior, ventilation, waste management, egg quality and egg breakage. Other new features include a list of more than 400 references and a Master List of the tables, figures, manufacturers of equipment and supplies, research institutions, books and periodicals, breeders, and trade associations. Commercial growers will find the tables of data of particular interest; scientists will be able to utilize the extensive references and to relate their areas of interest to the commercial industry's applications; and students will find that the division of the book into 11 distinct sections, with multiple chapters in each, will make the text especially useful.

Download or read book Maternal Diet and Essential Fatty Acid Metabolism in Progeny Chickens written by Cheri Jean Bullock and published by . This book was released on 2013 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 21 day incubation period, the fertile egg provides nutrients such as fatty acids for energy and polyunsaturated fatty acids (PUFA) for membrane synthesis to the developing chick. The hypothesis tested in the present study is that the type of PUFA fed to the breeder hen can alter tissue lipid composition and PUFA metabolism in the progeny during growth. The objective of the present study was to test two different sources of PUFA (n-3 or n-6) on: 1) egg production, egg, and chick quality; and 2) changes in tissue PUFA composition and metabolism in progeny during growth. Fertilized eggs (n=240) were collected from Ross breeder hens (n=45) fed one of the three experimental diets containing 3.5% fish (long chain n-3), flax (18:3 n-3), or safflower oil (18:2 n-6). The egg and yolk weight was lowest for eggs from hens fed fish oil (P=0.09, P=0.02). The chick weight on day of hatch was 41.2, 45.3, and 43.3g, for fish, flax, and safflower, respectively (P=0.003). In the second experiment fertilized eggs were collected from Lohman Brown layer hens (n=75) fed a control, high n-3, or low n-3 diet. Chicks were raised up to day 14 on a control diet lacking long-chain n-6 and n-3 fatty acids. Chick tissue samples (gastrointestinal tract, liver, and blood) were collected on day 1, 7, and 14 and were subjected to fatty acid (FA) and interleukin-6 (IL-6) analysis. The long-chain n-6 to long chain n-3 ratio was lowest in the duodenum, jejunum, ileum, and liver from chicks hatched from fish oil fed hens (P

Download or read book Effects of Dietary Fatty Acids on Adipose Development in Young Broiler Chicks written by Sarah Jane Howard and published by . This book was released on 2016 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: The broiler chicken is an attractive model for human obesity, and childhood obesity in particular, due to its ability to eat independently at hatch, put on abdominal fat post-hatch, and its similarities in lipid metabolism. Three studies are presented to investigate the potential for omega-3 fatty acids administered in ovo and in the diet at hatch to alter adiposity. Studies one and two investigated manipulating the fat source in the diet from hatch to days 14 and 24, respectively. Oils tested included corn, lard, macadamia, tuna, fish, safflower, flaxseed, and coconut. Data concerning body weight, breast weight, and abdominal fat weight were measured. In addition, basal lipolysis, PPARɣ expression, and ex vivo lipolysis and adipocyte differentiation were explored. The third study was the first known experiment to attempt in ovo injections of lipids at day 17.5 of incubation, and focused on improving the technique for fatty acids. The oils tested for in ovo injections were corn oil and fish oil, though the experiment was cut short due to neurological issues. The first two studies confirm that enriching the diet in omega-3 polyunsaturated fatty acids can be used to decrease adipocyte size and differentiation, which could potentially provide benefits to both broiler chickens and humans.

Download or read book Fatty Acids and Glycerides written by A. Kuksis and published by Springer. This book was released on 1978-04-01 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advances in lipid biochemistry over the past 25 to 30 years have been dramatic and exciting. The elucidation of the pathways of fatty acid biosynthesis and oxidation, the delineation of the biogenesis of cholesterol from small-molecular weight precursors, the structure proof of simple and complex lipids from plants, animals, and microorganisms, are excellent examples of the spectacular advances made during the golden era of lipid biochemistry. The multifaceted discoveries in these diverse areas of study could be attributed to development of highly sophisticated column chromatographic techniques for separation and purification of simple and complex lipids. The advent of thin-layer chromatography as well as gas liquid chromatography provided an explosive impetus to research developments in this field. Concomitant advances in mass spectrometry allowed an interface with gas-liquid chromatography which spawned even greater insight into the structure of lipids. These eventful days of lipid chemistry nearly 25 years ago led to a relatively quiescent period wherein scientists applied these newly available techniques to investigation of the behavior of isolated (lipid) enzyme systems and to unraveling the intricacies of the metabolic behavior of lipids in the intact cell or whole organisms. Then, in the early 1960s, a decided change in research emphasis developed with the advent of a simple, reproducible procedure for the isolation of cell membranes.

Download or read book Omega 3 Fatty Acid Enrichment of Chicken Eggs written by Mohamed Neijat and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eggs enriched with omega-3 polyunsaturated fatty acids (PUFA), particularly the longer chain PUFA (LCPUFA, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)) can boost human consumption of these fatty acids implicated in human health. Alpha-linolenic acid (ALA) from plant seeds/oils, primarily serve as the source of omega-3 PUFA for hens, however, the scarcity of ALA-rich plants and the limited conversion of ALA to LCPUFA are challenges for egg enrichment. Two major experiments were conducted to determine potential factors regulating egg enrichment of omega-3 LCPUFA based on detailed assessment of PUFA profiles in different lipid pools of hen tissues. In experiment 1, supplementation of graded levels of hempseed products, provided ~ 0.1 to 1.3% of ALA in the diets. Experiment 2, investigated dietary supplementation of flaxseed oil (ALA-rich) and algal DHA (preformed LCPUFA), each providing similar graded levels of total omega-3 PUFA. Both ALA-containing models demonstrated a plateau in DHA enrichment of eggs at higher ALA intakes. ALA-containing diets led to high concentrations of ALA in the triacylglycerol (TAG) fraction of eggs and plasma, and the adipose tissue of flaxseed oil-fed hens. In total phospholipid (PL), particularly the phosphatidylethanolamine (PE), the levels of EPA and ALA in the yolk were linearly associated with those in the liver. In all tissues, DHA dominated the PE pool, exhibiting a plateau with a strong inverse correlation to the ratio of ALA to EPA in the liver, suggesting limited ALA availability for egg DHA enrichment. The use of algal DHA should therefore permit further accumulation of DHA in the total PL and TAG fractions of yolk. However, enrichment via preformed DHA (at 3.36% algal product) was also limited by hepatic PL resulting in more DHA and EPA being shunted to the adipose TAG, concurrent with elevated hepatic acyl-CoA synthetase (ACSL1) expression. As a function of total omega-3 PUFA intakes (regardless of source), similar levels of stearidonic acid (SDA) and particularly EPA accumulated in liver PE. Therefore, hepatic PL regulation, possibly aimed at maintaining EPA level, may potentially be limiting the amount of ALA accumulation in the same pool, hence limiting the endogenous synthesis of DHA and subsequent enrichment in eggs.

Download or read book Dietary Polyunsaturated Fatty Acids and Immune Responses in Poultry written by Ramesh Kumar Selvaraj and published by . This book was released on 2002 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three experiments were conducted to study the influence of dietary fatty acids on the production performance and immune response of chickens. In experiment I, forty day-old broiler chicks were fed diets containing 5% of either animal fat + conjugated linoleic acid (CLA) (Diet I), sunflower oil (Diet II), flax oil (Diet III) or fish oil (Diet IV). No significant differences (P>0.05) were observed between the live weight of birds. The liver tissue total fat content was lower (P0.05) in treatment I and II. The fatty acid composition of breast and thigh muscle, liver, heart, pericardial fat, plasma, splenocytes and gut associated lymphoid tissue differed (P0.05) between treatments. The thiobarbituric acid reactive substances (TBARS) of breast and thigh muscle, liver and heart tissue were lower (P0.05) in Diet I fed birds. Serum antibody activity was decreased (P0.05) in Diet II fed birds. In experiment II, 120 day-old broiler chicks were fed diets containing 3.5% of either animal fat + conjugated linoleic acid (CLA) (Diet I), sunflower oil (Diet II), linseed oil (Diet III) or fish oil (Diet IV). Body weight gain was higher (P

Download or read book Maternal Dietary Fat Transfer and Utilization in the Embryonic and Neonatal Broiler Chicken written by Mickey Adams Latour and published by . This book was released on 1995 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: