The authors note that an important reserve for increased production, improvement of the quality of mutton, especially lamb, is the use of industrial breeding in sheep breeding and the successful combination of parental breeds used in industrial breeding and contributing to the development of cross-breeding, caused by the effect of heterosis. In this regard, it is necessary to identify the best variants of crossing low-yielding, fine-wool, coarse-wool and other breeds of ewes with rams of meat, meat and fat and other breeds and on the basis of comparative study of the growth characteristics, formation of meat features in the process of growing, feeding and fattening purebred and cross lambs, to develop the technology of their preparation for meat. Development and introduction of scientifically based intensive technology of preparation of lambs for meat, received from simple industrial crossing of low productive coarse-wool sheep with meat and meat-fat sheep breeds contribute to increasing the productivity of the sheep being sold, improving the product quality, providing the population with meat and high-quality meat products. The practical significance is that these technologies of growing and feeding crossed lambs, which have been bred by industrial crossing of compatible breeds by meat features and precocity, contribute to the increased production of high-quality ecological lamb and mutton.