Etude comparée de la digestion dans les pré-estomacs du lama et du mouton
| Autor: | M. Jailler, J.P. Dulphy, C. Dardillat, JM Ballet |
|---|---|
| Přispěvatelé: | Revues Inra, Import, ProdInra, Migration, Station de recherches sur la nutrition des herbivores, Institut National de la Recherche Agronomique (INRA) |
| Rok vydání: | 1997 |
| Předmět: |
Male
Veterinary medicine Time Factors 040301 veterinary sciences Soybean meal Ammonia levels Urine Biology Cohort Studies 0403 veterinary science Excretion Eating Animal science Ammonia [SDV.BDD] Life Sciences [q-bio]/Development Biology medicine Animals [SDV.SA.SPA] Life Sciences [q-bio]/Agricultural sciences/Animal production studies [SDV.BDLR] Life Sciences [q-bio]/Reproductive Biology 2. Zero hunger Sheep Stomach Ruminant Stomach LAMA 0402 animal and dairy science food and beverages 04 agricultural and veterinary sciences Hydrogen-Ion Concentration Lama Fatty Acids Volatile biology.organism_classification Animal Feed 040201 dairy & animal science [SDV.AEN] Life Sciences [q-bio]/Food and Nutrition medicine.anatomical_structure [SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies Hay Digestion Camelids New World Orchiectomy |
| Zdroj: | Reproduction Nutrition Development Reproduction Nutrition Development, EDP Sciences, 1997, 37 (6), pp.709-725 |
| ISSN: | 0926-5287 1297-9708 |
| DOI: | 10.1051/rnd:19970608 |
| Popis: | To compare digestion in the forestomach of llamas and sheep, the animals were fed four different diets: hay alone (H), low in nitrogen; the same hay with soybean meal (HS), with barley (HB) and with both soybean meal and barley (HSB). The sheep intakes were restricted to obtain about the same intake level in the two species. On average, the digestibilities of DM, OM and NDF were significantly higher in llamas: respectively, +2.7, 3.6 and 5.3 for the four diets. Added barley impaired hay digestion in the sheep, but very little in the llamas. The llamas retained nitrogen better than the sheep owing to very low urine losses. For hay alone, the retention time of digesta in the forestomach was higher in the llamas than in the sheep. In contrast, there was no difference between species for the other diets. The pH and ammonia levels were higher in llamas. In contrast, the SCFA levels were lower. In all cases the in-situ rate of digestion was greater in llamas. The low intake of llamas generally observed in the literature does not account for their better digestion. The stability of the two first compartment pH levels and an excellent cellulolytic activity are determining factors in the better digestion efficiency of plant cell walls in the llamas. However, higher NH3 levels were observed in llamas, although the urinary N excretion was lower. |
| Databáze: | OpenAIRE |
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