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Crossbreeding effects on rabbit reproduction from four maternal lines of rabbits

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Crossbreeding effects on rabbit reproduction from four maternal lines of rabbits

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dc.contributor.author Mohamed Ragab, Mohamed es_ES
dc.contributor.author Sánchez Serrano, Juan Pablo es_ES
dc.contributor.author Mínguez Balaguer, Carlos es_ES
dc.contributor.author Baselga Izquierdo, Manuel es_ES
dc.date.accessioned 2017-02-23T10:49:42Z
dc.date.available 2017-02-23T10:49:42Z
dc.date.issued 2016-07
dc.identifier.issn 1751-7311
dc.identifier.uri http://hdl.handle.net/10251/78233
dc.description.abstract Litter size is essential for an efficient production of rabbit meat . A diallel cross between four maternal lines was carrie d ou t and the analysis of the components of litter size has been already done. This paper presents the analysis of litter size traits themselves (total born (TB), number born alive (NBA) , number weaned (NW)) and kindling interval (KI ), that complete the analysis of the reproductive performance. The 16 genetic groups were distributed in four Spanish farms . The V line was present in all farms in order to be used as reference group. A total of 34 546 parities from 7111 does, were analysed. The crossbreeding parameters were estimated according to Dickerson model. The diffe ences between lines performance were of low magnitude and not significant for litter size traits. The LP line showed the shortest KI follow ed by H respect to lines A and V. These differences reflected the differences between direct and maternal genetic effects. The differences between the average of all crosses and line V were f ou n d to be significant and seemed to be important, being 0.46 for TB, 0.56 for NBA, 0. 75 for NW and − 2.21 days for KI. The differences between reciprocal crosses for litter size were of low magnitude and non- sign ficant, which indicate that the maternal effects are not important between these lines. In general, the lines did not show significant diffeences in direct and maternal genetic effects for TB, NBA and NW but there were some significant differences for KI, which ranged from 1.54 to 6.85 days in direct effects and from 0.63 to 3.38 days for maternal effects. A positive and, in some cases, relevant heterosis was found. The largest heterosis was for TB in the HV c oss (1.05 rabbits), followed by the AH (0.74 rabbits), AV (0.57 rabbits) and LH (0.55 rabbits) crosses. For NBA , significant heterosis was found in HV (1.11 rabbit s) and AV (0.49 rabbits) and for NW in AV ( 0.90 rabbits ), LH ( 0.70 rabbits ) and LV (0.58 rabbits). Favourable and significant heterosis for KI was found in AV and LV crosses, whereas it was unfavourable in AL and in LH. The more recommended crosses were AV and LH, showing the greatest performances on NW, while the cross HV, which shows the greatest performances an NBA, could be highly recommended when cross-fostering is practised to equalise litter sizes after birth, in this situation the lower NW performance observed could be improved. es_ES
dc.description.sponsorship This work was supported by the Spanish project AGL2011-30170-C02-01 from the Spanish National Research Plan. en_EN
dc.language Inglés es_ES
dc.publisher Cambridge University Press (CUP) es_ES
dc.relation Spanish project from the Spanish National Research Plan [AGL2011-30170-C02-01 ] es_ES
dc.relation.ispartof Animal es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Diallelic cross es_ES
dc.subject Kindling interval es_ES
dc.subject Litter size es_ES
dc.subject Maternal lines es_ES
dc.subject Rabbits es_ES
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.title Crossbreeding effects on rabbit reproduction from four maternal lines of rabbits es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1017/S1751731115002918
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Agrónomos - Escola Tècnica Superior d'Enginyers Agrònoms es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ciencia Animal - Departament de Ciència Animal es_ES
dc.description.bibliographicCitation Mohamed Ragab, M.; Sánchez Serrano, JP.; Minguez Balaguer, C.; Baselga Izquierdo, M. (2016). Crossbreeding effects on rabbit reproduction from four maternal lines of rabbits. Animal. 10(7):1-7. doi:10.1017/S1751731115002918 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1017/S1751731115002918 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 7 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 10 es_ES
dc.description.issue 7 es_ES
dc.relation.senia 311467 es_ES
dc.identifier.eissn 1751-732X


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