A REPORT ON COMPARATIVE PERFORMANCE OF DIFFERENT LAYER STRAIN AVAILABLE AT SHIBPUR UPAZILLA AT NARSINGDI

Abstract

This study was conducted to know the Comparative performances of different commercial layer strains available at shibpur upazilla, Narsingdi. In shibpur mainly Hy-Line Brown, ISA- brown, Novogen brown and shaver brown -579 strains were reared. During this study total 9780 Hy-line brown in six farms, 5500 ISA Brown strains in 4 farms, 7450 Novogen brown in 6 farms and 6400 shaver brown-579 strains in four farms were studied. All the birds were reared in cage management system. The mature body weight, no. of egg production in total rearing periods, feed conversion ratio(FCR), peak production periods, mortality rate , age of 1st laying, weight at 1st laying, laying periods of four strains in cage management system were studied. The mature body weight of each strain was in (1800-2000gm) range. The number of egg production per bird in total rearing periods (80 - 95 weeks) were 393±0.21 of Hy-line brown, 365±0.26 of ISAbrown, 381±0.33 of Novogen brown and 380±0.41 of shaver brown -579. Feed converversion ratio was higher in case of ISA brown(2.4:1) and lower in case of other three strains. Peak production periods were higher (30-70) weeks in case of Hy-line brown than other three strains. Mortality rate was lower in Hy-line brown (7.66)) and higher in ISA-brown(14%) and shaver brown -579 (13.8%).The age of 1st laying was in average (17-19) weeks for the strains. The weight at 1st laying was likely to close for all the strain(1500-1700gm). The laying periods was higher (70-72) weeks in Hy-line brown and lower(60-65) weeks in ISA- brown. The performance of Hy-line brown was very good than other strain. The performance of ISA-brown was slightly lower.So,the performance of Hy-line brown was better than other three strain and more adaptable in shibpurupazilla, Narsingdi. 2