Turkish Journal of Veterinary & Animal Sciences
Abstract
The genetic improvement of local chicken breeds is essential for sustainability and adaptability. Marker-assisted breeding can increase the response to selection; however, it requires the identification of marker associations with different traits. Therefore, the current study aimed to evaluate the association between microsatellite marker alleles and the body weight of juvenile chicks over three subsequent generations. Ten microsatellites were used to genotype four chicken lines (two selected and two randombred) across three generations. The lines included the normally feathered selected line (CE1), the normally feathered randombred line (CE2) used as a genetic control for CE1, the naked-neck selected line (CE3), and the naked-neck randombred line (CE4) used as a genetic control for CE3. Seventy-four alleles were detected in the two groups across the three generations. Of these, 22 alleles were selected for association analysis based on their frequency across the subsequent generations. The most important alleles were 419 bp at the LEI0079 locus, 186 bp at the LEI0094 locus, and 118 bp at the ADL0158 locus. The current results also highlight additional promising alleles, such as 231 bp at the LEI0079 locus and 233 bp at the ADL0158 locus. These alleles accumulated in the selected chickens and affected body weight at different ages. The results suggest that these loci contain growth-related genes. These results may enhance the understanding of these regions not only in chickens but also in other domestic animals.
Author ORCID Identifier
MARIAM ORABI: 0009-0005-2441-777X
ESSAM EL-GENDY: 0000-0002-8428-9184
AHMED EL-KAIATY: 0000-0003-3079-4828
ELLHAM ABBAS: 0000-0002-3638-3117
MARWA AHMED: 0000-0003-2403-8217
MOSTAFA HELAL: 0000-0002-8005-9023
DOI
10.55730/1300-0128.4377
Keywords
Allele association, growth, local chickens, microsatellites, selection
First Page
102
Last Page
109
Publisher
The Scientific and Technological Research Council of Türkiye (TÜBİTAK)
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
ORABI, M. S, EL-GENDY, E. A, EL-KAIATY, A. M, ABBAS, E. H, AHMED, M. M, & HELAL, M. M (2025). Association between microsatellite loci and body weight over generations of selection for growth in local selected chicken lines. Turkish Journal of Veterinary & Animal Sciences 49 (3): 102-109. https://doi.org/10.55730/1300-0128.4377
