Genetic analysis of bone quality traits and growth in a random mating broiler population

Poultry Science
F González-CerónS E Aggrey

Abstract

We report the genetic relationship between growth and bone quality traits in a random mating broiler control population. Traits studied were growth rates from week 0 to 4 [body weight gain (BWG) 0 to 4], from week 0 to 6 (BWG 0 to 6), and residual feed intake (RFI) from week 5 to 6 (RFI 5 to 6). Bone quality traits were obtained at 6 weeks of age. These traits were shank weight (SW), shank length (SL), shank diameter (SDIAM), tibia weight (TW), tibia length (TL), and tibia diameter (TDIAM). Likewise, tibia was used to obtain the tibia density (TDEN), tibia breaking strength (TBS), tibia mineral density (TMD), tibia mineral content (TMC), and tibia ash content (TAC). At the phenotypic level, growth traits were positively correlated with most of the bone quality traits except with TDEN and TAC which tended to show unfavorable associations (-0.04 to -0.31). Heritability of bone quality traits ranged from 0.08 to 0.54. The additive genetic associations of growth traits with weight, length, and diameter of shank and tibia were positive (0.37 to 0.80). A similar pattern was observed with TMD and TMC (0.06 to 0.65). In contrast, growth traits showed unfavorable genetic associations with TDEN, TBS, and TAC (-0.03 to -0.18). It was conc...Continue Reading

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Citations

Oct 20, 2015·Avian Diseases·B PackialakshmiG R Huff
Jan 8, 2019·Animal : an International Journal of Animal Bioscience·J C FaveriM C Ledur
Jul 13, 2019·Poultry Science·Susanne KünzelMarkus Rodehutscord
Jul 18, 2019·Tropical Animal Health and Production·Dimas de Oliveira SantosHumberto Tonhati
Dec 4, 2019·Genome Génome / Conseil National De Recherches Canada·Jun GuoKe-Hua Wang
Mar 28, 2017·Journal of Applied Genetics·Ewa Sell-KubiakTomasz Szwaczkowski

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