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Milk digestion in the young rabbit: methodology and first results

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Milk digestion in the young rabbit: methodology and first results

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dc.contributor.author Gidenne, Thierry Noël es_ES
dc.contributor.author Bannelier, Carole es_ES
dc.contributor.author Gallois, Mélanie es_ES
dc.contributor.author Segura, M. es_ES
dc.contributor.author Lambrecht, Vincent es_ES
dc.date.accessioned 2019-01-03T11:02:31Z
dc.date.available 2019-01-03T11:02:31Z
dc.date.issued 2018-12-27
dc.identifier.issn 1257-5011
dc.identifier.uri http://hdl.handle.net/10251/114672
dc.description.abstract [EN] This study aims to determine the digestibility of milk by the young rabbit (21-25 d old), taking into account the increment of digesta content and urine excretion. Nineteen litters of 9 young rabbits 21 to 25 d old were used: 12 litters (S group) fed exclusively with milk using controlled suckling, and 7 litters (Control group) with free suckling and access to the pelleted feed of the doe. The faecal digestibility of milk dry matter (DM) was measured between 21 and 25 d of age, for S litters housed from 15 d of age in a metabolism cage separately from their mother. Between 21 and 25 d, the milk intake, faeces and urine excretion were controlled daily, and the mean increment in digesta content was measured by comparing digesta weight of the whole tract at 21 and 25 d of age (one kit per litter). The increment in digesta content from 21 to 25 d averaged 77% (+8.5 g), sourcing mainly from stomach and caecum contents increase (+57 and +120% respectively). The mean increase for the dry content of the gut (from 21 to 25 d) was 1.75 g DM/kit, and was considered as non-digested to calculate the digestibility coefficient of the milk. The milk intake averaged 30 g/d/kit (7.9 g DM/d kit). No faecal excretion was recorded between 21 and 25 d. From the milk intake and increment in digesta content, the corrected digestibility of the milk dry matter reached 94% (minimum=92.9%, maximum=95.6%). The daily urine excretion averaged 5.1 mL/kit, corresponding to 1.2 g DM/kit. Therefore, the corrected DM retention coefficient of the milk was 79.5%. The quantity of nitrogen excreted in urine was low (0.06 g/d kits), thus the corrected nitrogen retention coefficient for milk reached 82% and the nitrogen retained (corrected) reached 0.44 g/d kit. Accordingly, the amount in metabolisable protein for the milk was 90 g/kg (fresh). The corrected energy retention coefficient was estimated to 95.8%, for a crude energy concentration estimated at 28.14 MJ/kg DM for the milk. Thus, the energy retained (corrected) reached 223 kJ/d kit and the content in metabolisable energy for the milk was 26.94 MJ/kg DM. es_ES
dc.description.sponsorship The authors thank INRA PHASE division for the financial support. The authors would also like to thank the technicians involved in the experiment at the INRA UE PECTOUL (Patrick Aymard, Jacques De Dapper & Jean De Dapper) and in the GenPhySE laboratory (Véronique Tartié). es_ES
dc.language Inglés es_ES
dc.publisher Universitat Politècnica de València
dc.relation.ispartof World Rabbit Science
dc.rights Reserva de todos los derechos es_ES
dc.subject Young rabbit es_ES
dc.subject Digestion es_ES
dc.subject Milk es_ES
dc.subject Methodology es_ES
dc.title Milk digestion in the young rabbit: methodology and first results es_ES
dc.type Artículo es_ES
dc.date.updated 2019-01-03T10:56:48Z
dc.identifier.doi 10.4995/wrs.2018.10061
dc.rights.accessRights Abierto es_ES
dc.description.bibliographicCitation Gidenne, TN.; Bannelier, C.; Gallois, M.; Segura, M.; Lambrecht, V. (2018). Milk digestion in the young rabbit: methodology and first results. World Rabbit Science. 26(4):269-276. https://doi.org/10.4995/wrs.2018.10061 es_ES
dc.description.accrualMethod SWORD es_ES
dc.relation.publisherversion https://doi.org/10.4995/wrs.2018.10061 es_ES
dc.description.upvformatpinicio 269 es_ES
dc.description.upvformatpfin 276 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 26
dc.description.issue 4
dc.identifier.eissn 1989-8886
dc.contributor.funder Institut National de la Recherche Agronomique, Francia
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