Table 5.

Values for plasma homocysteine concentration at 48 and 70 weeks of age, production data, radiographic density, mechanical and physicochemical bone properties measured at 70 weeks of age between CBS genotype Ost106225194/Ost112522587 (AA/AA vs. GG/GG) in Population 5

	Trait	AA/AA mean	se	GG/GG mean	se	P value	df
Radiographic, mechanical, metabolite and production data
Body weight	Body weight (g)	1638	24	1603	24	0.291	1,64
Egg traits	Egg number	282.3	1.8	276.0	2.3	0.574	1,64
	Egg breaking strength (48 wk of age)	40.1	0.9	40.4	1.3	0.508	1,61
Plasma homocysteine	Homocysteine 48 wk of age (µM/L)	18.64	0.55	16.68	0.64	0.024	1,52
	Homocysteine 70 wk of age (µM/L)	19.13	0.46	17.18	0.63	0.016	1,64
Detailed morphometry and physicochemical analysis
Bone type
Whole tibia	Breaking strength (N)	228.1	6.6	228.2	9.0	0.998	1,36
Whole tibia	Stiffness (Nm)	316,939	8456	322,940	9526	0.64	1,36
Whole tibia	Density (mm Al equiv/mm3)	1.60	0.01	1.61	0.01	0.412	1,36
	% cortical bone	56.84	2.33	50.84	2.30	0.075	1,36
Tibia cortical
Tibia cortical	Density (mmAl equiv/mm3)	0.018	0.001	0.022	0.001	0.024	1,36
Tibia cortical	MinCO3 1415	0.209	0.003	0.170	0.003	< 0.001	1,36
Tibia cortical	CI 1030/1020	0.584	0.004	0.633	0.007	< 0.001	1,36
Tibia cortical	PO4/Amide I	3.97	0.11	6.40	0.12	< 0.001	1,36
Tibia cortical	LNK 1660/1690	2.54	0.12	4.17	0.19	< 0.001	1,36
Tibia cortical	AngSpread 002	54.9	0.91	49.4	0.66	0.004	1,35
Tibia cortical	FWHM002	0.45	0.01	0.46	0.017	0.842	1,36
Tibia medullary	Density (mmAl equiv/mm3)	0.025	0.003	0.024	0.002	0.743	1,36
Tibia medullary	MinCO3 1415	0.18	0.03	0.16	0.02	0.576	1,36
Tibia medullary	CI 1030/1020	0.77	0.022	0.73	0.02	0.149	1,36
Tibia medullary	PO4/Amide I	1.17	0.09	1.25	0.10	0.585	1,36
Tibia medullary	LNK 1660/1690	3.20	0.09	3.20	0.07	0.998	1,36
Tibia medullary	FWHM002	0.58	0.03	0.56	0.02	0.425	1,35