- -

Litter size component traits in two Algerian rabbit lines

RiuNet: Institutional repository of the Polithecnic University of Valencia

Share/Send to

Cited by

Statistics

Litter size component traits in two Algerian rabbit lines

Show simple item record

Files in this item

dc.contributor.author Belabbas, Rafik es_ES
dc.contributor.author García, Maria de la Luz es_ES
dc.contributor.author AinBaziz, Hacina es_ES
dc.contributor.author Berbar, Ali es_ES
dc.contributor.author Argente, Maria José es_ES
dc.date.accessioned 2021-04-14T10:48:08Z
dc.date.available 2021-04-14T10:48:08Z
dc.date.issued 2021-03-31
dc.identifier.issn 1257-5011
dc.identifier.uri http://hdl.handle.net/10251/165133
dc.description.abstract [EN] The aim of this study was to estimate the limiting litter size components in rabbit females from a Synthetic line (n=32) and a Local population (n=34). Ovulation rate, number of implanted and live embryos were counted by laparoscopy at 12 d after mating. Prolificacy (total newborn, number born alive and mortality) and embryonic, foetal and prenatal survival at day of birth of the 3rd gestation were measured. The analysed traits were body weight of the female at mating, ovulation rate, implanted, live and resorbed embryos, embryonic, foetal and prenatal survival, as well as total newborn, number born alive and mortality at birth. Synthetic line females had a higher ovulation rate compared to the Local population (11.03±0.23 vs. 8.41±0.23 corpora lutea; P<0.0001). Synthetic line displayed a higher number of implanted embryos (10.00±0.25 vs. 7.85±0.25 embryos; P<0.0001). No difference was found between groups for number of resorbed embryos. Similar embryonic, foetal and prenatal survival rates were reported between the Synthetic line and the Local population. Additionally, total newborn was higher in the Synthetic line than in the Local population (+1.46 kits; P<0.05). A principal components analysis was performed. The first four principal components (PC) explained more than 90% of the total variation in both lines. Total newborn, number born alive and live embryos were the main variables defining the 1st PC. Resorbed embryos and foetal survival were located in the 2nd PC. Ovulation rate and embryonic survival were the predominant variables defining the 3rd PC. The body weight of females was located in the 4th PC. The phenotypic correlation between total newborn and its components were high and positive in both lines, except for ovulation rate and total newborn, where it was moderate in Synthetic line. In conclusion, the females from Synthetic line have a higher total newborn than those from Local population, as a consequence of a higher number of released oocytes and embryos that successfully reach implantation. However, a higher uterine crowding in Synthetic line seems to limit survival of foetuses that reach term of gestation, while ovulation rate is the principal limiting factor of total newborn in Local population. es_ES
dc.description.sponsorship The authors are grateful to Halfaoui Mobarek Said and Hamed Khodja Nabil for their valuable support during this experiment. es_ES
dc.language Inglés es_ES
dc.publisher Universitat Politècnica de València es_ES
dc.relation.ispartof World Rabbit Science es_ES
dc.rights Reconocimiento - No comercial - Compartir igual (by-nc-sa) es_ES
dc.subject Crossbreeding es_ES
dc.subject Litter size es_ES
dc.subject Ovulation es_ES
dc.subject Prenatal survival es_ES
dc.subject Rabbits es_ES
dc.title Litter size component traits in two Algerian rabbit lines es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.4995/wrs.2021.14247
dc.rights.accessRights Abierto es_ES
dc.description.bibliographicCitation Belabbas, R.; García, MDLL.; Ainbaziz, H.; Berbar, A.; Argente, MJ. (2021). Litter size component traits in two Algerian rabbit lines. World Rabbit Science. 29(1):51-58. https://doi.org/10.4995/wrs.2021.14247 es_ES
dc.description.accrualMethod OJS es_ES
dc.relation.publisherversion https://doi.org/10.4995/wrs.2021.14247 es_ES
dc.description.upvformatpinicio 51 es_ES
dc.description.upvformatpfin 58 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 29 es_ES
dc.description.issue 1 es_ES
dc.identifier.eissn 1989-8886
dc.relation.pasarela OJS\14247 es_ES


This item appears in the following Collection(s)

Show simple item record