Comparison of production characteristics of BLRI-developed layer strain-2 (Shorna) with commercial ISA Brown

Abstract

The existing research program was undertaken to associate the presentation of Bangladesh Livestock Research Institute (BLRI) settled layer strain-2 "Shorna" with a commercial strain (ISA Brown). To conduct this study, a total of 120 ISA Brown and 120 Shorna pullets were selected at chance from the prevailing batch at the age of twelve weeks. Birds were arranged in a completely randomized design, with six replications having 20 birds in each replication. Non-significant results were found in the case of feather sexing accuracy between two brown egg-laying strains. The egg weight and the egg mass production were found to be significantly (p < 0.05) higher in Shorna than in ISA Brown, whereas the egg production rate fell for Shorna compared to ISA Brown. In terms of body weight or feed consumption, there was no statistically significant difference between Shorna and ISA brown, and neither of the studied layer chickens had an impact on their FCR. Higher serum phosphorus and antibody titer levels were found in Shorna than in ISA brown (P<0.05). Additionally, the Shorna strain had more ovarian follicles than the ISA brown strain (P<0.05). Therefore, it may be assumed that these results prove Shorna is equivalent to an ISA brown laying chicken.