Physiological and Pharmacological Aspects of the Reticulo-Rumen (Current Topics in Veterinary Medicine, 41)

The success of a scientific workshop depends on a delicate blend of many types of ingredients. Most important is to select a provocative topic which is at the forefront of a current investigative study. Coupled together with a relatively small but distinguished group of active research scientists known for their continued record of contributing significant findings, one has the firm foundation for an exciting and rewarding investment of time and effort. This was the setting for the first workshop organized by the European Association for Veterinary Pharmacology and Toxicology. Ruminants have been domesticated for many centuries and have served mankind as a source of dairy products, meat, wool and power. The ruminant stomach has long been - and still is - a major concern for physiologists, pathologists, clinicians and pharmacologists. This workshop was organized and convened in an attempt to strengthen the basic science of the ruminant stomach, as it applies to an economically important group of mammals. To achieve this, various topics were covered by specialists which ensured presentation of new data, followed by discussions. In this book, reviews are presented on the different topics: motility (control and regulation, neurotransmitters and endogenous substances involved); flow of digesta (comparative aspects, role of content and metabolites); food intake; rumen metabolism (chemical manipulation, metabolism of xenobiotics and drugs); pharmacology of forestomach motility and, the reticulo-rumen as a pharmacokinetic compartment. Front Matter....Pages I-X The Control of the Motility of the Reticulo-Rumen....Pages 1-20 Reticulo-Rumen and Gastroduodenal Junction Motility....Pages 21-41 Neurotransmitters / Neuromodulators Involved in the Motor and Secretory Functions of the Ruminant Stomach: A Histochemical , Radioimmunological , Immunocytochemical and Functional Approach....Pages 43-111 Reticulo-Rumen Motility: In Vitro and in Vivo Effects of Endogenous Substances....Pages 113-132 Forestomach: Control of Digesta Flow....Pages 133-154 Comparative Studies of Food Propulsion in Ruminants....Pages 155-170 Metabolic and Endocrine Controls of Food Intake in Ruminants....Pages 171-197 Rumen Microbial Metabolism of Plant Secondary Compounds, Xenobiotics and Drugs....Pages 199-225 Chemical Manipulation of Rumen Metabolism.....Pages 227-251 The Rumen as a Pharmacokinetic Compartment....Pages 253-269 Drug-Induced Effects on Reticular Groove Reflex, Eructation and Rumination....Pages 271-306 Back Matter....Pages 307-318