Growth and development indexes of several different tri breed crossbred combination progeny were tested at different ages. Results indicated that body sizes and body weight of tri breed crossbred individuals were significantly larger than that of two-breed crossbred individuals, even at family feeding conditions. It was also suggested that fine quality forge and mixed concentrate should be fed after 2 months later, which ensured 400 kg body weight at 18 month age and 500 kg body weight after 3 month fattening at 21 month old.\;