4454 progenies developed over a period of four years were analyzed to find the productive performance of si5f halfbreds i.e. SN (SC x NZW), NS (NZW x SC), SL (SC x LC), NL (NZW x LC), LS (LC x SC) and LN (LC x NZW), developed through diallel crossing involving Soviet Chinchilla, New Zealand White and indigenous rabbit of Meghalaya. Rabbits were maintained in indoor cage housing and 50% roughage feeding was practiced replacing concentrate pelleted feed. It was found that SN showed highest live weight at 42, 60, 90 and 120 days of age and average daily gain, whereas LS expressed highest body weight at 150 days of age. There was highly significant (P < 0.01) difference among the genetic groups at all ages i.e. 42, 60, 90, 120 and 150 days of age. However non-significant difference (P > 0.05) was found in average daily gain. Average live weight of halfbreds at 42 days age was found to be 621 g ranging from 655.95 in SN to 581.49 g in SL. 60 days live weight varied from 1.048 kg to 0.930 kg with an average of 0.974 kg. 90 days live weight varied from 1.669 to 1.526 kg with an average of 1.581 kg. Average daily gain ranged from 21.10 g in SN to 19.15 g in NL with an average figure of 19.99 g.
