Author: Britta BlankPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Studies on the Threonine Requirement in Growing Pigs
Author: Britta BlankA Reevaluation of the Threonine Requirement of the Growing Pig
Author: James Earl SowersStudies on the Threonine Requirement of Weanling Pigs
Author: Kevin Douglas RobersonPublisher:
ISBN:
Category : Amino acids in animal nutrition
Languages : en
Pages : 120
Book Description
Nutrient Requirements of Swine
Author: Publisher: National Academies Press
ISBN: 9780309059930
Category : Nature
Languages : en
Pages : 218
Book Description
Each of these popular handbooks contains comprehensive information on the nutritional needs of domestic animals and includes extensive tabular data. All are paperback and 8 1/2 x 11. Some books come with diskettes or Cds that allow users to predict nutrient requirements of specific animals under various conditions and at various life stages.
Threonine Requirement of the Young Growing Pig
Author: Roger Alan ArentsonNutritional and Physiological Functions of Amino Acids in Pigs
Author: Francois BlachierPublisher: Springer Science & Business Media
ISBN: 3709113288
Category : Science
Languages : en
Pages : 306
Book Description
This book provides developmental data regarding piglets (with a focus on the gastrointestinal tract), data related to amino acid metabolism in pigs, data related to nutritional and physiological functions of amino acids in pigs, nutritional requirements for amino acids in pigs, signaling roles of amino acids, methodological aspects in amino acid research and the pig model for studying amino acid-related human diseases.
Threonine Requirement of the Weanling Pig and Amino Acid Balance Studies with Pigs and Chicks
Author: Valentin L. RosellThreonine Requirement of Growing and Finishing Pigs
Author: M. L. LorschyPublisher:
ISBN:
Category : Amino acids in animal nutrition
Languages : en
Pages : 136
Book Description
The Ideal Protein Profile for Growing-finishing Pigs in Precision Feeding Systems
Author: Aline RemusPublisher:
ISBN:
Category :
Languages : en
Pages : 29
Book Description
Amino acids (AA) are essential components of diets but accurate determination of AA requirements in farm animals is a challenge. Requirements for AA in pigs can be influenced by several factors, including genetics, health, age, and, as recently shown, also individual variability. In conventional group-phase feeding (GPF) systems, large groups of pigs receive the same feed during extended periods and most pigs receive more nutrients than required to express their growth potential with potential detrimental effects on the environment through increased nitrogen excretion, and on production costs. In individual precision feeding (IPF) systems, pigs are fed diets tailored daily to their individual nutrient requirements. In light of this, it is necessary to distinguish the AA requirements of a population from those of individuals. Optimal essential AA ratios have been established for pigs in conventional GPF systems, but these optimal AA ratios might differ for pigs in IPF systems. The main research objective was to compare the ideal protein profile in pigs using the optimal threonine-to-lysine (Thr:Lys) ratio between conventional GPF and IPF systems. Based on a dose-response approach with five levels Thr:Lys ratios offered to growing pigs in a GPF or IPF system, it was possible to confirm the initial hypothesis that optimal AA ratios differ between feeding systems. Carcass chemical composition and AA concentration was likewise affected by the Thr:Lys ratio, and the magnitude and type of response depended on the feeding system. In a second dose-response study with similar Thr:Lys ratios offered to late finishing pigs, requirements were larger than to those previously observed for growing pigs, suggesting that AA requirements for protein deposition is age dependent. These two studies suggest that individual pigs can modulate their growth and body composition according to the level of AA intake and can respond differently to same amount of ingested AA. These studies further highlighted the weakness of using an ideal protein profile by considering fixed requirements for AA due the assumed constant AA carcass composition. Accurate estimation of AA requirements for pigs in an IPF system seems to be mainly limited by the use of fixed AA ratios as pigs have different AA requirements. Finally, a novel approach to the dose-response approach based on a central composite design with a factorial design aiming at independently estimating real-time requirements for Lys and Thr in individual pigs was proposed. A non-unique response of protein deposition to various Thr and Lys combinations was observed due to the differences in AA requirements among individual pigs. This insight on variability among individual pigs is useful to fine-tune the precision feeding system by estimating AA requirements more accurately, feeding pigs according to their individual requirements, and, ultimately, reduce waste of nutrients in pigs with lower protein deposition. The results presented in this thesis support the idea that changes in body composition in pigs are induced by changes in dietary AA levels. Therefore, growth may be modulated to the optimal body composition desired by the consumer. This thesis proposes a change of perspective in animal nutrition, where AA may be seen as a trigger for animal metabolic response with dynamic and distinctive AA requirements in individual animals.
Recent Developments in Pig Nutrition
Author: D J A ColePublisher: Elsevier
ISBN: 1483140911
Category : Technology & Engineering
Languages : en
Pages : 334
Book Description
Recent Developments in Pig Nutrition shows the updates in the nutrition and the evaluation of energy needs in raising and breeding pigs. The book covers the energy requirement of pigs; the effects of climatic variables on the nutrition and energy of pigs; and the prediction of energy content in pig feeds. The availability and importance of proteins and amino acids in pig feeds are also discussed. The text also explains the importance of vitamins and minerals in the diet of pigs; the nutritional needs of the different sexes of pigs and piglets; and the processing and evaluation of cereals for pig diets. The monograph is recommended for those in piggery business, who want to know more about the importance of pig nutrition and be updated with the different findings in the field. The book will also be good for animal nutritionists who concern themselves with pig feeds and for veterinarians who specialize in pigs.