Author: Key Ung LeePublisher:
ISBN:
Category :
Languages : en
Pages : 382
Book Description
Nutritional and Endocrine Effects on the Efficiency of Lysine and Protein Use in Growing Pigs
Effects of Exogenous Porcine Somatotropin Administration on Protein Deposition and Efficiency of Lysine Utlization in Growing Pigs
Author: Beatrice Jeanne Marie KrickPublisher:
ISBN:
Category :
Languages : en
Pages : 282
Book Description
Some Effects of Level of Dietary Protein on Lysine Metabolism of Growing Pigs
Author: Robert Frank KlayMetabolic Modifiers
Author: National Research CouncilPublisher: National Academies
ISBN: 0309049970
Category : Technology & Engineering
Languages : en
Pages : 94
Book Description
In the past decade, animal scientists have learned that administering recombinantly derived somatotropin (growth hormone) to cows improves milk production and that giving beta-adrenergic agonists to meat animals improves productivity and leanness. In order for these metabolic modifiers to yield benefits, however, sound management of the animals' nutrition is necessary. This volume reports on how these substances work in the animals' metabolism, what effects they might have on nutrient requirements of domestic livestock, and what information should be developed further by investigators. The book explores the current understanding of the biology, structure, mechanisms of action, and treatment effects of somatotropin, beta-adrenergic agonists, and anabolic steroids. A companion volume to the Nutrient Requirements of Domestic Animals series, this authoritative volume will be required reading for animal scientists, researchers, veterinarians, livestock farmers, and faculty and students in university animal veterinary science programs.
Effects of Dietary Lysine on Muscle Gene Expression and Fatty Acid Profiles and on Selected Carcass Characteristics and Plasma Hormone Concentrations in Late-stage Finishing Pigs
Author: Taiji WangPublisher:
ISBN:
Category :
Languages : en
Pages : 142
Book Description
Dietary inclusion of sufficient lysine is very critical for optimizing pig’s growth performance. The objectives of this project were to study the effects of dietary lysine at different concentrations on (1) the growth performance and carcass characteristics, (2) the muscle gene expression profile and the possible alterations to the metabolic and signaling pathways, (3) the muscle fatty acid profile, and (4) the plasma concentrations of growth-related hormones of late-stage finishing pigs. Nine crossbred barrows were assigned to 3 dietary treatments (lysine-deficient, -adequate, and -excess diets) according to a completely randomized experimental design. During the 5-week feeding trial, pigs were allowed ad libitum access to experimental diets and water. All pigs and experimental diets were weighed individually each week during feeding trial to determine growth performance. After harvest, the carcass characteristics were determined and muscle samples were collected from longissimus dorsi for mRNA and fatty acid profiling, while the jugular vein blood was collected at the end of four weeks for analyses of three growth-related hormones. While the average daily gain showed a quadratic relationship, the dressing percentage and total lean cut weight both increased linearly with dietary lysine concentrations. Results of muscle gene expression data showed that dietary lysine deficiency may lead to decreased protein synthesis, increased protein degradation and lipid accumulation, while dietary lysine excess may lead to decreased protein degradation and increased lipid biosynthesis. Fatty acid (FA) composition data showed that different dietary lysine concentrations altered the intramuscular fat (IMF) content and FA composition, especially the unsaturated FAs. In particular, dietary lysine deficiency increased the IMF content and the proportion of mono-unsaturated FAs. Hormone analyses showed that the plasma concentrations of insulin and growth hormone were not affected by dietary lysine, whereas the concentration of insulin-like growth factor 1 was decreased by either dietary lysine deficiency or excess. Collectively, lysine may function as a signaling molecule to regulate the expression of genes related to protein turnover and lipid metabolism in the muscle of finishing pigs, causing differences in growth performance, carcass characteristics, and FA composition. IGF-1 may be a controlling growth factor that is sensitive to dietary lysine.
NorFor -
Author: Harald VoldenPublisher: Springer Science & Business Media
ISBN: 9086867189
Category : Science
Languages : en
Pages : 172
Book Description
NorFor is a semi-mechanistic feed evaluation system for cattle, which is used by advisors in Denmark, Iceland, Norway and Sweden. This book describes in detail the system and it covers five main sections. The first is concerned with information on feed characteristics, feed analysis and feed digestion methods. The second section describes the digestion and metabolism in the gastrointestinal tract and the supply and requirement of energy and metabolizable amino acids. The third section considers the prediction of feed intake and physical structure of the diet. The fourth section focuses on model evaluation and the final section provides information on the IT solutions and feed ration formulation by a non-linear economical optimization procedure. This book will be of significant interest to researchers, students and advisors of cattle nutrition and feed evaluation.
Nutritional Interrelationships of Minerals and Basic Amino Acids in Growing Pigs
Author: Felix Nduka MadubuikePublisher:
ISBN:
Category : Amino acids in animal nutrition
Languages : en
Pages : 376
Book Description
The Effects of Dietary Protein Content and Synthetic Lysine Supplementation on Performance of Finishing Pigs
Author: Donnie Ray CampbellPublisher:
ISBN:
Category : Lysine
Languages : en
Pages : 6
Book Description
Recent Developments in Pig Nutrition 2
Author: Philip C. GarnsworthyPublisher: Hyperion Books
ISBN:
Category : Feeds
Languages : en
Pages : 392
Book Description
Changes in consumer perceptions of meat quality; Nutritional manipulation of carcass quality in pigs; Consequences of changes in carcass composition on meat quality; Energy-protein interactions in pigs; Comparison of arc and nrc recomended requirements for energy and protein in growing pigs; Amino acid nutrition of pigs and poultry; Methods of determining the amino acid requirements of pigs; Ileal digestibilities of amino acid in pig feeds and their use in formulating diets; Use of synthetic amino acids in pig and poultry diets; Towards an improved utilization of dietary amino acids by the growing pig; Role of dietary fibre in pig feeds; Phosphorus availability and requirements in pigs; The water requirement of growing-finishing pigs - theoretical and practical considerations; Water for piglets and lactating sows: quantity, quality and quandaries; The phisiological basis of electrolyes in animal nutrition; Manipulation of the gut environment of pigs; Acidification of diets for pigs; Aetiology of diarrhoea; Immunity, nutrition and performance in animal production; Novel approaches to growth promotion in the pig; Impact of somatotropin and beta-adrenergic agonists on growth, carcass composition and nutrient requirements of pigs; Strategies for sow nutrition: predicting the response of pregnant animals to protein and energy intake; Predicting nuttrient responsesof the lactating sow; Nutrition of the working boar.
Delineation of the Individual Effect that Lysine, Crude Fiber and Free Gossypol Content of Cottonseed Meal Exert on Growing Pig Performance and Determination of Amino Acid Availability in Screwpress and Glandless Cottonseed Meals
Author: Darrell Albert KnabePublisher:
ISBN:
Category : Cottonseed meal as feed
Languages : en
Pages : 254
Book Description