COMPARATIVE STUDIES ON SOME PRODUCTIVE CAPABILITIES AMONG IMPORTED, ENDOGENOUS AND NATIVE RABBIT BREEDS UNDER EGYPTIAN ENVIRONMENTAL CONDITIONS

摘要

This study was planned to evaluate some productive capabilities of growing different breeds of rabbits; New Zealand White (NZW), V-line; Baladi Black (BB) and Gabali breeds under Egyptian conditions. Four hundred weaned rabbits (one month age) of both sexes were used as biological material. Breed had significant effects on growing traits. The (NZW) rabbits showed the highest (P≤0.05) initial and body weight at 60 days. Also V-line and (BB) groups showed significantly higher daily weight gain than both Gabali and NZW rabbits. For daily feed intake trait, NZW and V-line breeds showed higher significantly (P≤0.05) than both BB and Gabali breeds. Whereas, (BB) rabbits showed the highest (P≤0.05) feed efficiency trait (0.375). Dressing percentage and all internal organs weight were significantly affected by breeds. A significant difference between breeds for carcass weight, V-Line scored the highest (1168.2 g). For dressing percentage, V-Line observed the highest records (62.71 %), meanwhile the other breeds observed the same manner. Significant maximum values (P≤0.05) were recorded for all internal organs weight of growing V-Line rabbits. Baladi Black, (NZW) and Gabali breeds were significantly descendedly ranked after that. Blood picture and serum constitute observed that (BB) and Gabali had significantly (P≤0.05) higher values than both imported NZW and V-line except total protein and globulin traits, where the native Gabali rabbits recorded a significant maximum score at all (7.01 and 2.4 mg%), respectively.