Gastrointestinal Microbiology, Volume 1Rod I. Mackie, Bryan White, Richard E. Isaacson Springer Science & Business Media, 31 gen 1997 - 658 pagine Extremely diverse and complicated bacterial and protozoan populations inhabit the rumen and intestinal tract of animals, and there is a delicate balance among the individual populations within this complex microbial community. This authoritative edited volume, the first in a two-volume set, reviews the gut environment and the fermentations taking place in animal digestive tracts. It is an essential source of reference for microbial ecologists and physiologists, medical microbiologists and gastroenterologists, biochemists, nutritionists, veterinarians and animal scientists, and wildlife ecologists. |
Sommario
Introduction to Gastrointestinal Microbial Ecology | 3 |
Future Directions in Gut Microecology | 9 |
Types of AnimalMicrobe Relationships | 21 |
Synopsis | 31 |
Foregut Fermentation | 39 |
The Ruminant Animal | 62 |
Fermentation of Feedstuffs | 68 |
Conclusions | 75 |
Future Prospects in Ruminant and Nonruminant Animal Feeding | 359 |
References | 360 |
A Model for Metabolism of Nitrogen Compounds in Gastrointestinal Environments | 380 |
Degradation of NitrogenContaining Compounds in the Rumen | 381 |
Peptide Metabolism | 392 |
Deamination | 397 |
Urea Metabolism | 403 |
Nucleic Acid Metabolism | 405 |
Fermentation in the Hindgut of Mammals | 84 |
Digesta Flow and Digestion in Cecum Fermenters | 91 |
Summary and Conclusions | 107 |
An Elusive | 116 |
Role of Gut Microbes in the Physiology of the Avian Host | 124 |
Microbes and Nitrogen Digestion | 133 |
Conclusions | 143 |
Enzyme Activities of the Gastrointestinal Microorganisms | 176 |
Uptake and Metabolism of SCFA | 185 |
References | 192 |
Fermentation in Reptiles and Amphibians | 199 |
Gastrointestinal Tract Morphology of Anuran Tadpoles | 218 |
Microbial Fermentation in Insect Guts | 231 |
Fermentation in Guts of Other Insects | 251 |
Carbohydrate Fermentation Energy Transduction and | 269 |
Fermentation Reactions in Gut Anaerobes | 279 |
Hydrogen Metabolism in the Colon | 293 |
References | 309 |
Polysaccharide Degradation in the Rumen and Large Intestine | 319 |
The Plant Cell Wall and Its Polymers | 320 |
Polysaccharides and Monosaccharides Metabolized by Ruminal Microorganisms | 323 |
Adhesion of Ruminal Microorganisms to Plant Cell Walls and to Plant Polysaccharides | 327 |
General Mechanisms for the Degradation of Plant Cell Walls Cellulose and Hemicellulose | 330 |
Mechanisms of Cellulose and Hemicellulose Degradation by Ruminal Bacteria and Fungi | 334 |
Pectin Degradation by Ruminal Bacteria and Fungi | 344 |
Effect of Lignin and Tannins on Cell Wall Polymer Degradation | 346 |
Starch Structure and Degradation by Ruminal Microorganisms | 347 |
Microbial Interactions | 351 |
General Features of the Microbial Fermentation in the Large Intestine | 352 |
Enzymology of Polymer Degradation by Intestinal Microorganisms | 355 |
Uptake and Metabolism of Monosaccharides and Disaccharides | 357 |
Genetic Manipulation of the Fibrolytic Capability of Ruminal and Nonruminal Bacteria | 358 |
Coordination of Nitrogen and Carbohydrate Metabolism | 407 |
Conclusions | 412 |
Biosynthesis of NitrogenContaining Compounds | 424 |
Ammonia Assimilation and Biosynthesis of Glutamate Glutamine and Asparagine | 426 |
Control of Assimilatory Pathways | 435 |
Biosynthesis of Other LAmino Acids | 442 |
Biosynthesis of Polyamines | 448 |
Biosynthesis of Pyrimidines and Purines | 451 |
Conclusions | 457 |
Biotransformation of Bile Acids Cholesterol and Steroid Hormones | 470 |
Metabolism of Bile Acids by the Intestinal Microbiota | 474 |
Metabolism of Cholesterol by the Intestinal Microbiota | 488 |
Metabolism of Steroid Hormones by the Intestinal Microbiota | 491 |
Summary | 497 |
References | 498 |
Gastrointestinal Toxicology of Monogastrics | 511 |
Toxins from Animal Sources | 512 |
Toxins from Plant Sources | 515 |
Toxins from Food Processing | 525 |
Toxins from Food Additives | 530 |
Toxins from Pharmaceutical Agents | 536 |
Bacterial Toxins Produced in the Gastrointestinal Tract | 539 |
Biotransformation Mechanisms of Toxins in the Monogastrics | 547 |
Conclusions | 560 |
Introduction | 569 |
Gastrointestinal Detoxification and Digestive Disorders | 583 |
Ruminal Detoxification of Phytotoxins and Mycotoxins | 591 |
Ruminal Digestive Disorders | 612 |
Conclusion | 620 |
| 639 | |
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Gastrointestinal Microbiology: Volume 1 Gastrointestinal Ecosystems and ... Roderick Mackie,Bryan White Anteprima limitata - 2012 |
Gastrointestinal Microbiology: Volume 1 Gastrointestinal Ecosystems and ... Roderick Mackie,Bryan White Anteprima non disponibile - 2012 |
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