Brief Communication: Effect of Post-Mating Pro Gestagen Administration on Pregnancy Rate in Crossbred Goats Following an Induced Estrus

  • Héctor Nava-Trujillo Universidad del Zulia, Facultad de Ciencias Veterinarias, Escuela de Medicina Veterinaria
  • José Chango-Villasmil Universidad del Zulia, Facultad de Ciencias Veterinarias, Escuela de Medicina Veterinaria
  • Geovanny Finol-Parra Catedra de Fisiología de los Animales Domésticos I
  • Juan Maldonado-Suárez Universidad del Zulia, Facultad de Ciencias Veterinarias, Escuela de Medicina Veterinaria
  • Paola Torres-Rodríguez Universidad del Zulia, Facultad de Ciencias Veterinarias, Escuela de Medicina Veterinaria
  • Freygelinne Carrillo-Fernández Universidad del Zulia, Facultad de Ciencias Veterinarias, Escuela de Medicina Veterinaria
  • Lidya Gil-Huerta Universidad de Zaragoza, Facultad de Veterinaria, Departamento de Patología Animal Zaragoza

Resumen

Estrus induced with progesterone or progestagens have low fertility compared to natural estrus. However, post-mating progesterone administration has been reported by increases embryo development and pregnancy rate; therefore the aim of this study was to evaluate the effect of post-mating progestagen administration on pregnancy rate after medroxyprogesterone acetate (MAP) induced estrus in crossbred goats. Estrus induction was started at 31.3 Ó 1.7 days post-partum with intra- vaginal sponges impregnated with 60 mg of MAP during 14 days and at time of sponge removal were applied 500 IU of eCG intramuscular. Estrus was detected every 6 hours from 24 hours onwards after sponge withdrawal. Goats were naturally mated with two entry bucks. Five days post-mating, mated goats were randomly assorted into two groups, control group (n=18), without any treatment, and MAP group (n=18), receiving a sponge with 60 mg of MAP for fourteen days. Ultrasonographyc diagnosis of pregnancy was performed at day 50 post-mating. MAP treatment, did not affect the pregnancy rate, with 44.4% (8/18) in MAP group, while in control group was 55.5% (10/18), P>0.05. In conclusion, MAP treatment with a sponge impregnated with 60 mg of MAP between days 5 and 19 post-mating did not affect the pregnancy rate after progestagen induced estrus during the early post-partum period in crossbred tropical goats

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Cómo citar
1.
Nava-Trujillo H, Chango-Villasmil J, Finol-Parra G, Maldonado-Suárez J, Torres-Rodríguez P, Carrillo-Fernández F, Gil-Huerta L. Brief Communication: Effect of Post-Mating Pro Gestagen Administration on Pregnancy Rate in Crossbred Goats Following an Induced Estrus. Rev. Cient. FCV-LUZ [Internet]. 1 [citado 28 de marzo de 2024];18(5). Disponible en: https://produccioncientificaluz.org/index.php/cientifica/article/view/15399
Sección
Producción Animal