Fertilidad, desarrollo embrionario y prolificidad de conejas nulíparas alimentadas con piensos enriquecidos en ácidos grasos poliinsaturados n-3

  • J.I. Pascual Departamento de Producción Animal, E.T.S.I. Agrónomos, Universidad Politécnica de Madrid
  • A. González-Bulnes Dpto. de Reproducción Animal. INIA
  • A. González-Bulnes
  • M. Arias-Álvarez Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid
  • R.M. García-García Departamento de Fisiología (Fisiología Animal), Facultad de Veterinaria, Universidad Complutense de Madrid
  • M. Masdeu Departamento de Fisiología (Fisiología Animal), Facultad de Veterinaria, Universidad Complutense de Madrid
  • N. Formoso-Lafferty Departamento de Fisiología (Fisiología Animal), Facultad de Veterinaria, Universidad Complutense de Madrid
  • M. Rodríguez Departamento de Fisiología (Fisiología Animal), Facultad de Veterinaria, Universidad Complutense de Madrid
  • A. Ciacci Dpto. de Reproducción Animal. INIA
  • P.L. Lorenzo Departamento de Fisiología (Fisiología Animal), Facultad de Veterinaria, Universidad Complutense de Madrid
  • P.G Rebollar Departamento de Producción Animal, E.T.S.I. Agrónomos, Universidad Politécnica de Madrid
Keywords: productivity, embryo, PUFA n-3, rabbit.

Abstract

One hundred and five nulliparous rabbit does were fed ad libitum one month before and during pregnancy with two isofibrous, isoenergetic and isoproteic diets supplemented with two different fat sources: 0.75% lard for control diet (C group: n=53) or 1.5% of a supplement (Optomega-50; Optivite International Ltd., España) containing a 50% of ether extract and 38% of n-3 polyunsaturated fatty acids (PUFA) for experimental diet (group P n-3; n=52). Fertility after artificial insemination and induction of ovulation with 20 μg of Gonadorelina (Inducel-GnRH, Ovejero) at 4.5 months of age was assessed. At parturition, pregnancy length and prolificacy (number and weight of born alive and number of stillborn) were observed. A total of 8 pregnant does from each experimental group were chosen at random to study embryo and placenta dimensions by means of ultrasonography at 8, 15 and 22 days of pregnancy. PUFA n-3 supplementation did not affect any productive results due the success on reproductive features of nulliparous does which are difficult to improve. Neither, any differences in ultrasonographic meausrements were obtained; nevertheless we have defined useful physiological parameters of rabbit embryo and placenta to future studies in this specie.

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Published
2013-06-03
How to Cite
Pascual J., González-Bulnes A., González-Bulnes A., Arias-Álvarez M., García-García R., Masdeu M., Formoso-Lafferty N., Rodríguez M., Ciacci A., Lorenzo P. y Rebollar P. (2013). Fertilidad, desarrollo embrionario y prolificidad de conejas nulíparas alimentadas con piensos enriquecidos en ácidos grasos poliinsaturados n-3. Revista Complutense de Ciencias Veterinarias, 7(1), 5-9. https://revistas.ucm.es/index.php/RCCV/article/view/42396
Issue
Vol. 7 No. 1 (2013)
Section
Congresos y Jornadas

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