The embryo transfer technique (ET) began to be used in Brazil in the 70's, based initially on in vivo embryo production (by conventional superovulation). The potential of the technique as a tool in the multiplication of superior genotypes or in breeding programs resulted in its rapid assimilation by the productive sector, with a consequent increase of its use in the following decades. In recent years, the development of the in vitro embryo production technology has revolutionized the national ma

Status: Completed     Start date: Thu Jan 01 00:00:00 GMT-03:00 2009

The project was conducted in order to identify and evaluate alternatives to produce genetically modified embryos and, subsequently, genetically modified ruminant animals, by identifying methods or procedures that enable the production of ruminant transgenic embryos in a more efficient way, reducing time and costs. Such procedures, associated with the insertion of genes of interest, may allow the generation of genetically modified animals capable of producing recombinant proteins important for an

Status: Completed     Start date: Fri Apr 01 00:00:00 GMT-03:00 2011

Reproductive biotechnologies, particularly in vitro embryo production, can be useful to improve the milk productivity in Brazil by accelerating the genetic gain and reducing the intervals between generations. Genomic selection associated with reproductive biotechnology may be applied at the embryonic stage to promote the selection of embryos with desirable genetic traits and disposal of those with undesirable traits; consequently, maintenance costs of recipient cows would be reduced and efforts

Status: Completed     Start date: Sun Jun 01 00:00:00 GMT-03:00 2014