The level of productivity of goats in Jakarta is still relatively low mainly because of the poor maintenance system of the local goats. In order to increase the productivity of the local goats and to produce high quality meat goat as well, then it is requires the artificial insemination (AI) technology to cross local goats with a superior type of meat goat. Therefore, Jakarta Assessment Institute for Agricultural Technology (Jakarta AIAT) had conducted an assessment to study the reproductive performance of the offsprings of Boer goat crossed with local goats. The study divided into two sub activities were: a) crossing process through the AI using frozen semen of Boer goat with 4 types of local goat, including Kacang, PE, Saanen and Java Randu goats, and b) observations on the pregnancy, the birth, growth as well as the parent and child performance of the offsprings. The study conducted in the two consecutive years (2011 - 2012) at 4 city administration areas of Jakarta Province. The selected goats be synchronized using Prostaglandins (PGF2α) hormone twice in a 10-day interval, then 3 days later be inseminated twice in the time interval from 10 to 12 hours. The offsprings be weaned at the age of 3 months and the parents be reinseminated again at that time. Artificial insemination had been made against as many as 3 goats during the month of July 2011, 48 goats in August 2011, and each of the 6 goats in October 2011 and January 2012. So it is expected that 4.76% of the goat will giving birth in December 2011, 76,2% in January 2012 and each 9,52% in March 2012 and June 2012. Pregnancy examination, using ultra sonography (USG) technique, had been carried out in 33 goats, which consisted of 2 Kacang, 3 PE, 8 Saanen and 20 Java Randu goats, respectively. The USG results showed that as many as 54.5% of examined goats were in a positive state of pregnancy, 27.3% were not pregnant and 18.2% were possible pregnant. As of early January 2012 only one goat had given birth, with a length of pregnancy was 164 days. This goat has twin offsprings with different sexes, that was 1 male and 1 female. The male goat had a birth weight of 3 kg, and a female one had 2 kg weight, with the combination of fur color of white and black.