Regulation of bone phosphorus retention and bone development possibly by related hormones and local bone-derived regulators in broiler chicks

Table 2 The correlation coefficients bone phosphorus retention or bone development and local bone-derived regulators in broilers at 14, 28 and 42 days of age ^a

Traits	FGF23 mRNA expression	PHEX mRNA expression	DMP1 mRNA expression	Tibia ALP	Tibia BGP
D 14
Tibia ash phosphorus concentration	0.052	−0.299	0.380*	−0.697**	− 0.604**
TP_TA	−0.198	− 0.397*	0.394*	− 0.828**	−0.660**
Tibia BMC	−0.222	−0.362*	0.409*	−0.803**	− 0.634**
Tibia BMD	−0.224	− 0.377	0.419**	−0.806**	− 0.651**
Tibia BBS	−0.143	− 0.303	0.432**	−0.774**	− 0.686**
Tibia ash concentration	−0.229	− 0.386*	0.401*	− 0.810**	−0.643**
D 28
Tibia ash phosphorus concentration	0.068	0.087	0.471**	−0.513**	−0.083
TP_TA	0.311	−0.333	0.667**	−0.763**	− 0.425*
Tibia BMC	0.295	−0.312	0.689**	−0.741**	− 0.401*
Tibia BMD	0.384*	−0.395*	0.617**	− 0.764**	−0.416*
Tibia BBS	0.339	−0.353	0.617**	−0.807**	− 0.409*
Tibia ash concentration	0.291	−0.283	0.688**	− 0.800**	−0.361
D 42
Tibia ash phosphorus concentration	0.312	0.158	0.437*	−0.515**	−0.310
TP_TA	0.314	0.138	0.420*	−0.632**	−0.325
Tibia BMC	0.291	0.169	0.462*	−0.629**	−0.343
Tibia BMD	0.284	0.205	0.441*	−0.621**	− 0.317
Tibia BBS	0.280	0.218	0.442*	−0.549**	−0.362*
Tibia ash concentration	0.389*	0.268	0.397*	−0.624**	−0.303

^a Data represent the correlation coefficients between bone phosphorus retention or bone development and local bone-derived regulators in broilers at 14 (n = 39/40), 28 and 42 (n = 31/32) days of age. *P < 0.05, **P < 0.01. TP_TA the total phosphorus accumulation in tibia ash, BMC bone mineral concentration, BMD bone mineral density, BBS bone breaking strength, FGF23 Fibroblast growth factor 23, PHEX phosphate-regulating gene homologous to endopeptidase on X chromosome, DMP1 Dentin matrix protein 1, ALP alkaline phosphatase, BGP bone gal protein

ISSN: 2049-1891