Physical characteristics of reticular content in the bovine and consequences on reticular outflow
| Autor: | R. Baumont, C. Dardillat |
|---|---|
| Přispěvatelé: | Revues Inra, Import, Station de recherches sur la nutrition des herbivores, Institut National de la Recherche Agronomique (INRA), ProdInra, Migration |
| Jazyk: | francouzština |
| Rok vydání: | 1992 |
| Předmět: |
medicine.medical_specialty
Time Factors law.invention Rumen Animal science law Osmotic Pressure Internal medicine [SDV.BDD] Life Sciences [q-bio]/Development Biology medicine Osmotic pressure Animals Dry matter [SDV.SA.SPA] Life Sciences [q-bio]/Agricultural sciences/Animal production studies Particle Size [SDV.BDD]Life Sciences [q-bio]/Development Biology Filtration ComputingMilieux_MISCELLANEOUS [SDV.BDLR] Life Sciences [q-bio]/Reproductive Biology 2. Zero hunger Chemistry Viscosity 0402 animal and dairy science [SDV.BDLR]Life Sciences [q-bio]/Reproductive Biology 04 agricultural and veterinary sciences Hydrogen-Ion Concentration 040201 dairy & animal science Animal Feed [SDV.AEN] Life Sciences [q-bio]/Food and Nutrition Endocrinology [SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies Reticular connective tissue Particle-size distribution Fermentation 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Particle Outflow Cattle Digestion [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition Reticulum |
| Zdroj: | Reproduction Nutrition Development Reproduction Nutrition Development, EDP Sciences, 1992, 32, pp.21-36 Reproduction Nutrition Development, EDP Sciences, 1992, 32 (1), pp.21-36 |
| ISSN: | 0926-5287 1297-9708 |
| Popis: | Reticular content was sampled in cows before and 2 and 5 hours after they were fed various forages. Dry matter, particle size distribution, pH, osmotic pressure and viscosity of the liquid phase were measured. Consistency was also evaluated using purpose-built apparatus. The contents were fractionated by vertical distribution under gravity and by intermittent flow through an orifice into fractions containing different particle concentrations, to model reticular retention of large particles in rumen outflow. Retention occurs as a result of a combination of flotation carrying large particles back into the rumen, and filtration which prevents them leaving it. These processes are particularly effective after feeding, and with poor hay, and so help prolong fermentation time. The consistency of reticular content is relatively stable; it may be autoregulated by adjustment of feeding parameters in response to sensory receptor signals. |
| Databáze: | OpenAIRE |
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