COMPARISON OF PRODUCTION PERFORMANCE BETWEEN TWO BROILER BREEDER STRAINS IN NORTHEN PART OF BANLADESH

Abstract

The present study was conducted on Broiler Strains (Cobb-500 & Arbor Acres) maintained atKazi farms located in Northen part of Bangladesh to compare the egg production performance, Mortality rate, Hatchability and feed (kg) per hatching egg from 25 to 64 weeks of age.The highest egg production of Cobb-500 were observed in 30 to 34 weeks of age (79.76 ± 0.893) and the lowest in 60 to 64 weeks of age (46.76 ±0.724). The highest egg production of Arbor Acres were observed in 35 to 39 weeks of age (75.12 ± 0.257) and the lowest in 60 to 64 weeks of age (47.88 ±0.86). There were no significant difference (p<0.05) in egg production between Cobb-500 and Arbor Acres strain (79.76 ± 0.893 and 74.24 ± 0.851) at 30-34 weeks of age and (74.92 ± 0.257and 75.12 ± 0.25) at 35-39 weeks of age but significant difference between two strains at the age of 25-29, 40-44, 45-49, 50-54, 55-59, and 60-64 weeks.The highest mortality of Cobb-500 were observed in 60 to 64 weeks of age (0.9600  0.07543) and the lowest in 40 to 44 weeks of age (0.2900  0.02470). The highest mortality of Arbor Acres were observed in 60 to 64 weeks of age (1.2260  0.05519) and the lowest in 40 to 44 weeks of age (0.4800  0.0446). There were no significant difference (p<0.05) in mortality between Cobb-500 and Arbor Acres strain at different weeks of age .The highest hatchability of Cobb-500 were observed in 35 to 39 weeks of age (92.0680  0.11249) and lowest in 60 to 64 weeks of age (75.7640  0.34243). The highest hatchability of Arbor Acres were observed in 40 to 44 weeks of age (89.0140  0.20061) and the lowest in 60 to 64 weeks of age (73.4300  0.35355). There is no significant difference (p<0.05) in hatchability between Cobb-500 and Arbor Acres strain (92.4060  .10260 and 88.1880  .42407) at 35 to 39 weeks of age and (92.0680  .11249 and 89.0140  .20061) at 40 to 44 weeks of age but significant difference was found between two strains at the age of 25-29, 30-34, 45-49, 50-54, 55-59 and 60-64 weeks. There were no significant difference (p<0.05) in feed requirement of per hatching egg between Cobb-500 and Arbor Acres strain at age of 30-34, 40-44 and 45-49 weeks but significant differences were found among other weeks. In conclusion Cobb-500 strain was appeared to be most economic to rear than Arbor Acres in response their performance record.