Table 3. Bone collagen and liver ascorbic acid contents of red seabream, Pagrus major, fed experimental diets for 12 weeks

	Bone collagen (%)	Liver ascorbic acid level (µg/g)
AA30	39.9	80^c
AA90	33.3	131^b
AA300	39.4	184^a
CP30	35.6	47^c
CP90	35.8	47^c
CP300	36.9	50^c
SEM¹⁾	3.77	27.5
Analysis of variance
Ascorbic acid level	0.388	0.003
Ascorbic acid source	0.326	0.000
Level × source	0.380	0.004

AA30, AA90, and AA300 were 30, 90, and 300 mg/kg of ascorbic acid incorporated diet groups and CBP30, CBP90, and CBP300 were citrus by-products incorporated diets replacing ascorbic acid levels in the AA diets.
Values are means from triplicate groups where the values in each column with the different superscripts are significantly different (p < 0.05).
Pooled standard error of the mean.
AA, ascorbic acid; CBP, citrus by-product.