EN
A variety of recombinant DNA molecules have been introduced into the germ line of animals.The results transgenic animals have a diverse range of phenotypes, some of which were expected and some not anticipated.To data, the majority of transgenic animals are mice.However recombinant DNA has been introduced into agriculturally important animals such a sheep, rabbits, pigs, chickens, cattle and fish.In this report, we will survey the consequences of transgene expression in agriculturally important mammals in terms of their effects on growth.Also, we will review the data concerning the use of transgenic mammals as "bioreactors" for the production of recombinant proteins.