Growth Performance and Morphology Traits Associated with Neuropeptide Y (NPY) Genes Expression in Native Chickens
Growth Performance and Morphology Traits Associated with Neuropeptide Y (NPY) Genes Expression in Native Chickens
Jennarong Kammongkun1, Doungnapa Promket2*
ABSTRACT
This study investigates the association between neuropeptide Y (NPY) gene expression and growth performance and morphology traits in 281 PH chickens using PCR-RFLP genotyping. The analysis revealed significant associations between growth performance and morphology traits in PH chickens. The correlations between average daily gains (ADG4 to ADG16) and body weights (BW0 to BW16) ranged from 0.33 to 0.99, indicating a consistent upward trend over time. The high body weight (HBW) group exhibited superior growth performance and morphology traits compared to the low body weight (LBW) group (P<0.01), except for shank length (SL). Notably, NPY gene polymorphisms showed significant associations with growth performance and morphological traits (P<0.01). The Bb genotype was linked to higher body weight and average daily gain during weeks 4 to 16 compared to the bb genotype (P<0.01). This suggests an influence of the genotype on these traits. Additionally, NPY polymorphism affected body length (BL), with Bb genotype (21.10 cm) showed significantly higher BL values compared to the BB genotype (20.57 cm). These findings highlight the potential role of NPY gene variants in influencing growth performance and morphology traits in PH chickens, providing important genetic markers for selective breeding programs. Incorporating NPY polymorphisms into breeding strategies could boost productivity and efficiency in poultry farming. Future research should explore additional genetic factors influencing these traits.
Keywords | Growth performance, Morphology, Gene marker, Native chickens, Candidate gene, Economic trait
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