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La inseminación artificial en la especie equina Evaluación de la tasa de concepción Pasquale Chiacchirini (1) - Mauricio Monaci (1) - Angela Polisca (1) Gennaro Tortora (2) - Prospero Volpe (2)

nal rr'fri^;^rado a+5"C y conscrvado durante 36 horas.

PRF.MISAS La mctcxk>Ic^gía cl^ la inscminacic"m artificial en Ia ye^ua c•ncuc:nu-a hacc: ya als^unos añc^s su ahlirt^•icín hráctira en numerc^^o,ti lrtí,^^s c•ur c•yarulacl. t Iay^ yue r^a^rcl.u^ tamhi^n yuc r^hmsenta un meclic^ válido para progrui^ar y^ rcalirar la mcjc>ra ^;^n^•[ira ^•n hlazcn más I^r^•^^s, l^^•rmiticnclc^ ^•I ^tnhl^•ngelarión, rc^nw la hérclicla cle la integri18 20 cl,tcl cle la m^mhrana acrosmis (19H3), utilir,tndo muesU^as cle semen fresco y congelacio ^rov^nient^•.5 dr un mismo cahallo sementaL, refi^r^ hah^r ohtenido, en el primer cicltros nacidos con e^ta hráctica. Ia inseminacistaglandina F? alf^i (PGF2alfa) (Iatrumate-LC.I.) (Cuadro 1).

La eficacia clel tratamiento se ha ev^^luacío tanto en hase a la supresión de 1^>s estrc^s clurante el mism}^resivatn^n[^ nxíx^ilt^ti, h^tsta clue ha sc^hrcvcnido la n. tiie[e-onc^^ ^lí,ts cl^°,^hu^^s cle la vulaci, se h,tn recogiclo 33 etnhriones (69^'u), cle Is cuales H(?^^^^) nt^ ^ran ^^iahles. Palabras clave: l'egua, inseminaribn artificial, sinrronizacibn de los ^strc^s, tcrtilizaricín.

vulatory intervals and progesterone concentrations associated with loss during days I I to I 5. Theriogenol., 24. 409. Imel K.J., E.L. Squires, R.P. Elsden and R.H. Shideler!1981)- Collection and transfer of equine embryos. J. Am. Vet. Med. Ass., 10, 987. Klug E., H. Treu, H. Hillmann and H. Heinze ( 1975) - Results of insemination of mares with fresh and frozen stallion semen. - J. Reprod. Fert., Suppl. 23, 107. Leopold A., A. Zironi (1970) - Sul congelamento del materiale seminale del cavallo. - Rivista di Zootecnia Agricoltura Veterinaria, 3-4, S9. Loomis P.R., R.P. Amann, E.L. Squires and B.W. Pickett ( 1983) Fertility of unfrozen and frozen stallion spcrmatozoa extended in EDTA-Lactose-Egg yolk and packaged in straws. - J. Anim. Sci., 56,

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687. Merkt H., A. R. Gunzcl ( I 979) - A survey of early pregnancy losses in West Germany thoroughbred mares. - Equinc Vct. J.. I I, 256. M ^ ller Z.( I 982) - Fertility of frozen equine semen. - J. Reprod. Feri., suppl. 32, 47. M ^ ller Z. (1987) - Practicalities of insemination of mares with deepfrozen semen. - J. Reprod. Fert., suppl. 35, I 21.

Pace M.M. and J.J. Sullivan ( 1975) - E(Tect of timing of insemination, numbers of spermatozoa and extender componcnts on the pregnancy rate in mare inseminated with frozen stallion semen. - J.

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Reprod. Fert., suppl. 23; I I 5. Palmer E. and M.A. Driancourt (1980) - lJse of ultrasonic echography in equine gynecology. - Theriogenol. I 3, 203. Province CA., E.L. Squires, B.W. Pickett and R.P. Amann (1985) Cooling-rates, storage temperatures and fertility ofextended equine spermatozoa. - Theriogenol., 23, 925. Squires E.L., W.B. Stevens, D.E. Mc Glothlin and B.W. Pickett (1979) - Use an oral progestin for estrus synchronization in mares. Theriogenol., I I, 110. Squires E.L., V.M. Cook and J.L. Voss ( 1985) - Collection and tran-

sfer of equine embryos. - Bullettin n. 1, Fort Collins. Colorado State University. Animal Reproduction Laboratory. 29)

Tischner M. (1975) - Results of artificial insemination of horses in

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Poland in the post-war period. - J. Reprod. Fert., suppl. 23, 1 I I. Turner D.D., M.C Garcia, S.K. Webel, /O ^ .J. Ginther ( 1981) -[nfluence of follicular size on the response o^t mares to allyl trenbolone given before the onset of the ovulatory season. Theriogenol., 16, 73.

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Van Nieckerk CH., W.H. Gerneke (1966) - Persistence and parthenogenetic cleavage of tubal ova in the mare. - Onderstepoort J. Vet. Res., 33, 195.

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Villahoz M.D., E.L. Squires, J.L. Voss and R.K. Schideler ( 1985) Some observations on early embryonic death in mares. Theriogenol., 23, 915.

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Von Lepel J. Frhr(1975) - Maintenance offertiliry in the horse including artificial insemination. - Equine Veterinary J., 7, 97. Webel S.K., and E.L. Squires (1982) - Control of oestrus cycle in mares with Altrenogest. - J. Reprod. Fert., suppl. 32, 193. Yates D.J. and M.D. Whitacre (1988) - Equine artificial insemination. - Veterinary Clinics of North America: Equine Practice, 4, 2, 291.

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