Comparative Study Of Performance And Carcass Characteristics Of The Slow-Growing Naked Neck And The Commercial ISA Hubbard 15 Broiler Chickens

Abstract

This comparative analysis investigates the growth performance and carcass characteristics between Naked Neck and Isa Hubbard 15 chickens, focusing on growth metrics such as live weight, whole and eviscerated carcass weights, adipose tissue, viscera, thigh and breast meat, and weights of liver, heart, neck, and gizzard. Isa chickens exhibited a higher live weight (2439.25g) compared to Naked Neck chickens (1534.30g), with corresponding disparities in whole carcass weight (2129.25g vs. 1340.30g) and eviscerated carcass weight (1610.40g vs. 960.95g). Additionally, Isa chickens demonstrated a greater accumulation of adipose tissue (107.00g) in contrast to Naked Neck chickens (37.25g), indicating a pronounced difference in fat deposition. Despite these significant differences in growth metrics and fat storage, organ weights such as the liver (32.25g for Isa vs. 33.00g for Naked Neck) and heart (13.95g for Isa vs. 13.05g for Naked Neck) showed minimal variation across breeds. These findings highlight the genetic and phenotypic distinctions that influence poultry production outcomes, emphasizing the importance of breed selection to meet specific production goals and market demands.