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THE EFFECTS OF ALFAPROSTOL (PGF2a analogue) AND eCG ON REPRODUCTIVE PERFORMANCES IN POSTPARTUM RABBITS

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THE EFFECTS OF ALFAPROSTOL (PGF2a analogue) AND eCG ON REPRODUCTIVE PERFORMANCES IN POSTPARTUM RABBITS

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dc.contributor.author Mollo, A.
dc.contributor.author Veronesi, M.C.
dc.contributor.author Battocchio, M.
dc.contributor.author Cairoli, F.
dc.contributor.author Brecchia, G.
dc.contributor.author Boiti, C.
dc.date.accessioned 2011-02-23T11:12:19Z
dc.date.available 2011-02-23T11:12:19Z
dc.date.issued 2003
dc.identifier.issn 1257-5011
dc.identifier.uri http://hdl.handle.net/10251/9953
dc.description.abstract [EN] The aim of this study was to verify the effectiveness of post partum pharmacological oestrus synchronisation with alfaprostol or eCG in improving rabbit doe reproductive performances and to evaluate the incidence of pseudopregnancy in this species. One hundred and eighty commercial hybrid rabbit does, multiparous and lactating, were randomly divided into three groups (n=60) and treated on day 8 post partum (pp) as follows: Group A, 1 mL s.c. vitaminic solution with 200 mg alfaprostol, a synthetic analogue of PGF2a; Group B, 1 mL sc vitaminic solution with 20 I.U eCG; Group C (Control) 1 mL sc vitaminic solution. On day 11 pp (3 days after treatment), all the rabbits were artificially inseminated (AI), and injected with 0.8 mg of buserelin i.m. to induce ovulation. Concurrently, blood samples were taken for progesterone (P4) analysis by RIA with the following schedule: day 8 pp (before treatment), day 11 pp (before AI and the induction of ovulation) and day 16 pp (5 days after AI). Fertility was not influenced by hormonal treatments (71.7% and 71.2% respectively) compared to control (66.1%). Conversely, both PGF2a and eCG hormonal synchronisation treatments increased (P<0.05) litter size. P4 values before treatment on day 8 pp testify to the absence of functional CL (P4<2 ng/mL) in the early post partum period in 98.9% of the does in this breeding farm. Before AI and the induction of ovulation on day 11 pp 5.6% of the does had P4 concentrations, indicating non-oestral status (P4>1 ng/mL). On day 5 after insemination 95.5% had P4 values, which attest to the presence of functional corpora lutea (CL) (P4>2 ng/mL). The results of this study show that as long as rabbitry is properly managed zootechnically and sanitarily, drugs such as alfaprostol and eCG, while not ameliorating fertility rate when used for post partum oestrus sychronisation, can increase litter size. es_ES
dc.language Inglés es_ES
dc.publisher World Rabbit Science. ICTA. UPV es_ES
dc.relation.ispartof World Rabbit Science
dc.rights Reserva de todos los derechos es_ES
dc.subject Pgf2a es_ES
dc.subject Ecg es_ES
dc.subject Reproductive performance es_ES
dc.title THE EFFECTS OF ALFAPROSTOL (PGF2a analogue) AND eCG ON REPRODUCTIVE PERFORMANCES IN POSTPARTUM RABBITS es_ES
dc.type Artículo es_ES
dc.date.updated 2011-02-23T10:54:44Z
dc.identifier.doi 10.4995/wrs.2003.498
dc.rights.accessRights Abierto es_ES
dc.description.bibliographicCitation Mollo, A.; Veronesi, M.; Battocchio, M.; Cairoli, F.; Brecchia, G.; Boiti, C. (2003). THE EFFECTS OF ALFAPROSTOL (PGF2a analogue) AND eCG ON REPRODUCTIVE PERFORMANCES IN POSTPARTUM RABBITS. World Rabbit Science. 11(2):63-74. https://doi.org/10.4995/wrs.2003.498 es_ES
dc.description.accrualMethod SWORD es_ES
dc.relation.publisherversion https://doi.org/10.4995/wrs.2003.498
dc.description.upvformatpinicio 63
dc.description.upvformatpfin 74
dc.description.volume 11
dc.description.issue 2
dc.identifier.eissn 1989-8886 es_ES


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