Please use this identifier to cite or link to this item: http://hdl.handle.net/10532/2018
Title: Laparoscopic ovum pick-up (LOPU) en ovejas Rasa aragonesa portadoras o no del alelo FecXR del gen BMP15: rendimiento, diámetro folicular y efecto del tratamiento estimulatorio con FSH
Other Titles: Laparoscopic ovum pick-up (LOPU) in Rasa aragonesa ewes carrying or not the FecXr allele in the BMP15: performance, follicular diameter and effect of the stimulation with FSH
Authors: Lahoz Crespo, Belén
Folch Pera, José
Cocero Oviedo, Mª Jesús
Echegoyen Pérez, Elías
Sánchez Ruiz, Pilar
Alabart Alvarez, José Luis
Issue Date: 2011
Citation: Lahoz, B., Folch, J., Cocero, M.J., Echegoyen, E. , Sánchez, P. y Alabart, J.L. “Laparoscopic ovum pick-up (LOPU) en ovejas Rasa aragonesa portadoras o no del alelo FecXR del gen BMP15: rendimiento, diámetro folicular y efecto del tratamiento estimulatorio con FSH”. En: 41 Jornadas de Estudio. XIV Jornadas sobre Producción Animal. AIDA. Zaragoza, España, 17 y 18 de mayo de 2011, pp.347-349. ISBN: 978-84-615-0062-8
Abstract: A new polymorphism in the Bone Morphogenetic Protein 15 gene (FecXR allele) causing increased prolificacy in heterozygous ewes (R+) by an increase in ovulation rate has been recently described in Rasa Aragonesa ewes. Data from 2,172 follicles aspirated by the LOPU technique, with and without FSH treatment, in 16 R+ and 16 non carrier (++) ewes during 11 sessions were analyzed. Without FSH, the number of follicles present in the ovary was not significantly different between R+ and ++ ewes (9.7 and 9.2, respectively). FSH treatment led to 17.8 follicles in R+ ewes, mainly increasing 4 and 5 mm follicles (+11.2% and 9.7%, P<0.0001 for both) while in ++ ewes it produced 15.3 follicles, by increasing the percentage of 5, 6 and >6 mm follicles (+11.7% P<0.0001, +6.9% P<0.01 and +5.6% P<0.05, respectively). In conclusion, R+ ewes did not present a higher number of ovarian follicles, but their follicular population presented a significantly lower diameter. Further studies are necessary to determine if FSH sensitivity is increased in ewes carrying this polymorphism.
URI: http://hdl.handle.net/10532/2018
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