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Revista de la Facultad de Medicina Veterinaria y de Zootecnia
Print version ISSN 0120-2952
Abstract
OYUELA, L. A and JIMENEZ, C. FACTORS THAT AFFECT PREGNANCY RATES IN EMBRYO TRANSFER PROGRAMS. Rev. Med. Vet. Zoot. [online]. 2010, vol.57, n.3, pp.191-200. ISSN 0120-2952.
Since mid 70´s, the Embryo Transfer (ET) technology was commercially used to quickly reproduce animals of valuable genetics; with the development of embryo freezing, the possibility of mobilizing animals between countries with sanitary barriers became a reality. In the last decade with the commercial use of in vitro produced embryos (IVPE) the production increased, there are multiple factors that can influence in the results of the ET programs, these factors has very diverse origins: embryo (stage of development, quality, genetic component etc), recipient factors (body score, corpus luteum) external factors (season, animal management). This document will approach the topics associated with the factors that could affect pregnancy rates in ET programs of IVPE.
Keywords : Embryo transfer; recipients; cattle; IVPE.