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vol.12 número2PRODUCTION AND SEROLOGIE EVALUATION OF A BACTERIN AGAINST BOVINE LEPTOSPIROSISPARENTERAL SUPPLEMENTATION OF COPPER IN GESTATION COWS: EFFECT ON POSTPARTUM AND CALVES índice de autoresíndice de assuntospesquisa de artigos
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Revista MVZ Córdoba

versão impressa ISSN 0122-0268versão On-line ISSN 1909-0544

Resumo

RODRIGUEZ, Juan et al. MULTIFACTORIAL ANALYSIS OF PREGNANCY RATES IN EMBRYOS TRANSFER PROGRAMS IN COLOMBIA. Rev.MVZ Cordoba [online]. 2007, vol.12, n.2, pp.978-984. ISSN 0122-0268.

Objective. To analyze several characteristics of transferable embryo, as well as some of receptors on the pregnancy rates. Materials and methods. Hundred seventy four transfers were evaluated in two farms in Colombia. The analyzed variables in the receptors were serum progesterone levels, corpus luteum size and genetic group. The analyzed variables in embryos were stage of development, quality and transferin fresh or frozen. Results. None of the variables individually predicts the rate of pregnancy, however, the probability of a better result exists when a frozen excellent embryo is used (OD=5.100), good fresh (OD = 4.180) and if the receptor is ¾ Angus (OD=2.945). Conclusions. The pregnancy rate continues being a regulated event in multifactorial way and none of the evaluated parameters individually is responsible for the reproductive success

Palavras-chave : Corpus luteum; progesterone; breed; embryos transfer.

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