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Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 2005;18(11): 1535-1541.
DOI: https://doi.org/10.5713/ajas.2005.1535    Published online December 2, 2005.
Multi Trait Selection with Restriction for Cutup Carcass Value in Broiler Chicken: Genetic Relatedness of Lines Involved Based on Randomly Amplified Polymorphic DNA
H. Khosravinia, H. N. N. Murthy, K. P. Ramesha, M. G. Govindaiah
Five broiler chicken lines, namely HC, BPB2, CPB2, PB2 and UM1, involving in a selection program and differing in selection intensity and genetic background, were screened for randomly amplified polymorphic DNA (RAPD) polymorphism using 10 selected decamer primers. Nine primers amplified the genomic DNA, generating 200 to 2,500 bp and all detected polymorphism between lines. Out of 74 bands scored using these primers, 34 (50.0%) were found to be polymorphic. The number of polymorphic loci ranged from 3 to 6 with an average of 4.33. Lines differed considerably for within-population genetic similarity estimated by band frequency (WS = 93.55 to 99.25). Between-line genetic similarity estimates based on band sharing as well as on band frequency ranged from 71.35 to 86.45 and from 73.38 to 87.68, respectively. Lines HC and PB2 were the most closely related to the other, while BPB2 and CPB2 appeared to be more distant from each other. The between-line genetic distance based on both band sharing and band frequency revealed the similar trends as for Between-line genetic similarity. Based on BS and BF criteria, BPB2 and CPB2 as well as PB2 and UM1 lines can be merged to launch a new genetic group for further progress in biometrical objectives. A phylogenetic tree, derived using Nei`s coefficient of similarity revealed the different pattern of genetic distance between lines.
Keywords: Broiler Chicken; Selected Lines; Cutup Carcass; Genetic Relatedness; RAPD Markers
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