PMID- 25784765 OWN - NLM STAT- MEDLINE DCOM- 20150806 LR - 20200220 IS - 0032-5791 (Print) IS - 0032-5791 (Linking) VI - 94 IP - 5 DP - 2015 May TI - Genetic analysis of bone quality traits and growth in a random mating broiler population. PG - 883-9 LID - 10.3382/ps/pev056 [doi] AB - 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 concluded that bone quality traits have an additive genetic background and they can be improved by means of genetic tools. It appears that selection for growth is negatively correlated with some traits involved in the integrity, health, and maturity of leg bones. CI - (c) 2015 Poultry Science Association Inc. FAU - Gonzalez-Ceron, F AU - Gonzalez-Ceron F AD - NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602. FAU - Rekaya, R AU - Rekaya R AD - Department of Animal and Dairy Science, University of Georgia, Athens, GA, 30602. FAU - Aggrey, S E AU - Aggrey SE AD - NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602 saggrey@uga.edu. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150317 PL - England TA - Poult Sci JT - Poultry science JID - 0401150 SB - IM MH - Animals MH - Biomechanical Phenomena/genetics MH - Bone Density/*genetics/*physiology MH - Bone and Bones/*physiology MH - Chickens/genetics/*physiology MH - Female MH - Male OTO - NOTNLM OT - bone quality OT - growth OT - residual feed intake EDAT- 2015/03/19 06:00 MHDA- 2015/08/08 06:00 CRDT- 2015/03/19 06:00 PHST- 2014/12/26 00:00 [accepted] PHST- 2015/03/19 06:00 [entrez] PHST- 2015/03/19 06:00 [pubmed] PHST- 2015/08/08 06:00 [medline] AID - S0032-5791(19)32478-2 [pii] AID - 10.3382/ps/pev056 [doi] PST - ppublish SO - Poult Sci. 2015 May;94(5):883-9. doi: 10.3382/ps/pev056. Epub 2015 Mar 17.