Are carnivore digestive separation mechanisms revealed on structure-rich diets?: Faecal inconsistency in dogs (Canis familiaris) fed day old chicks
| Autor: | An Cools, Myriam Hesta, Annelies De Cuyper, Marcus Clauss, Wouter H. Hendriks, Geert Janssens, Guido Bosch |
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| Přispěvatelé: | LS Voeding, University of Zurich |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Metabolic Processes 10253 Department of Small Animals Animal Nutrition Physiology lcsh:Medicine Beagle Biochemistry MACRONUTRIENT DIGESTIBILITY Predation FATTY-ACID PRODUCTION Feces Faecal consistency Medicine and Health Sciences Carnivore IN-VITRO ANALYSES lcsh:Science CAPTIVE EXOTIC FELIDS Defecation chemistry.chemical_classification Mammals Multidisciplinary biology 630 Agriculture Ecology digestive oral and skin physiology Eukaryota PARTICLE PASSAGE MARKERS 04 agricultural and veterinary sciences Diervoeding Carnivory Trophic Interactions Canis Community Ecology Vertebrates Animal Nutritional Physiological Phenomena Trophic interactions Research Article TOTAL TRACT ENERGY Excretion 1100 General Agricultural and Biological Sciences 03 medical and health sciences Animal science HEALTHY ADULT DOGS Dogs 1300 General Biochemistry Genetics and Molecular Biology NUTRIENT DIGESTIBILITY Animals Life Science Veterinary Sciences Nutrition 1000 Multidisciplinary HUMAN INTESTINAL BACTERIA Wolves lcsh:R Ecology and Environmental Sciences 0402 animal and dairy science Organisms Fatty acid Biology and Life Sciences biology.organism_classification Fatty Acids Volatile 040201 dairy & animal science Diet Gastrointestinal Tract 030104 developmental biology Metabolism chemistry Amniotes Fermentation WIAS END-PRODUCT CONCENTRATIONS 570 Life sciences lcsh:Q Physiological Processes Chickens |
| Zdroj: | PLoS ONE 13 (2018) 2 PLOS ONE PLoS ONE PLoS ONE, 13(2) PLoS ONE, Vol 13, Iss 2, p e0192741 (2018) PLoS One, 13(2). Public Library of Science |
| ISSN: | 1932-6203 |
| Popis: | Pronounced variations in faecal consistency have been described anecdotally for some carnivore species fed a structure-rich diet. Typically two faecal consistencies are distinguished, namely hard and firm versus liquid and viscous faeces. It is possible that a separation mechanism is operating in the carnivore digestive tract, as in many herbivore species. Six beagle dogs were fed two experimental diets in a cross-over design of 7 days. Test diets consisted of chunked day old chicks differing only in particle size (fine = 7.8 mm vs coarse = 13 mm) in order to vary dietary structure. Digestive retention time was measured using titanium oxide (TiO2) as marker. The total faecal output was scored for consistency and faecal fermentation profiles were evaluated through faecal short-chain fatty acid (SCFA) and ammonia (NH3) analyses. A total of 181 faecal samples were collected. Dietary particle size did not affect faecal consistency, fermentative end products nor mean retention time (MRT). However, a faecal consistency dichotomy was observed with firm faeces (score 2 +/- 2.5) and soft faeces (score 4 +/- 4.5) being the most frequently occurring consistencies in an almost alternating pattern in every single dog. Firm and soft faeces differed distinctively in fermentative profiles. Although the structure difference between diets did not affect the faecal dichotomy, feeding whole prey provoked the occurrence of the latter which raises suspicion of a digestive separation mechanism in the canine digestive tract. Further faecal characterisation is however required in order to unravel the underlying mechanism. |
| Databáze: | OpenAIRE |
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