Identification of quantitative trait loci for shank length and growth at different development stages in chicken

Animal Genetics
Y GaoX Hu

Abstract

Shank length affects chicken leg health and longer shanks are a source of leg problems in heavy-bodied chickens. Identification of quantitative trait loci (QTL) affecting shank length traits may be of value to genetic improvement of these traits in chickens. A genome scan was conducted on 238 F(2) chickens from a reciprocal cross between the Silky Fowl and the White Plymouth Rock breeds using 125 microsatellite markers to detect static and developmental QTL affecting weekly shank length and growth (from 1 to 12 weeks) in chickens. Static QTL affected shank length from birth to time t, while developmental QTL affected shank growth from time t-1 to time t. Seven static QTL on six chromosomes (GGA2, GGA3, GGA4, GGA7, GGA9 and GGA23) were detected at ages of 2, 3, 4, 5, 6, 7, 9 and 12 weeks, and six developmental QTL on five chromosomes (GGA1, GGA2, GGA4, GGA5 and GGA23) were detected for five shank growth periods, weeks 2-3, 4-5, 5-6, 10-11 and 11-12. A static QTL and a developmental QTL (SQSL1 and DQSL2) were identified at GGA2 (between ADL0190 and ADL0152). SQSL1 explained 2.87-5.30% of the phenotypic variation in shank length from 3 to 7 weeks. DQSL2 explained 2.70% of the phenotypic variance of shank growth between 2 and 3 wee...Continue Reading

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Citations

Jan 8, 2019·Animal : an International Journal of Animal Bioscience·J C FaveriM C Ledur
Dec 4, 2019·Genome Génome / Conseil National De Recherches Canada·Jun GuoKe-Hua Wang
Sep 30, 2017·Genome Génome / Conseil National De Recherches Canada·Saeed S SohrabiAli Esmailizadeh
Oct 10, 2020·Frontiers in Genetics·Yuzhe WangNing Li
Dec 24, 2010·Current Opinion in Endocrinology, Diabetes, and Obesity

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