Table 4 Selected biochemical and redox parameters in the plasma and liver of weaners.

Parameter	C	FRA	FR	SEM	P_value
Plasma
UA; µmol l⁻¹	0.333^b	0.377^a	0.324^b	0.007	< 0.001
UREA; mmol l^–1	2.45	2.49	2.92	0.060	0.130
CREAT; µmol l⁻¹	86.81^b	79.41^b	96.55^a	2.10	< 0.001
BIL; µmol l⁻¹	2.52^a	2.72^a	1.83^b	0.098	< 0.001
Iron; µmol l⁻¹	19.43^b	29.31^a	17.86^b	0.837	< 0.001
Copper; µmol l⁻¹	30.38^c	40.97^a	34.58^b	0.726	< 0.001
Zinc; µmol l⁻¹	43.88^b	53.14^a	42.26^b	0.983	< 0.001
Selenium; µmol l⁻¹	1.11^b	1.60^a	1.36^ab	0.050	< 0.001
CAT; U ml⁻¹	11.28^c	43.18^a	28.69^b	3.23	< 0.001
SOD; U ml⁻¹	32.41	30.50	32.42	0.587	0.325
FRAP; µmol l⁻¹	13.10^c	22.15^a	16.81^b	0.971	< 0.001
Vitamin C, µmol l⁻¹	20.31^b	25.76^a	23.89^ab	1.32	0.035
LOOH; µmol l⁻¹	1.97^b	2.13^ab	2.40^a	0.049	< 0.001
MDA; µmol l⁻¹	0.761^b	0.332^c	2.01^a	0.178	< 0.001
Liver
CAT; U g⁻¹	162.8^b	261.36^a	169.2^b	15.18	0.001
SOD; U g⁻¹	90.69^b	133.3^a	102.4^ab	7.08	0.019
LOOH; nmol g⁻¹	12.07	10.65	9.54	0.514	0.127
MDA; nmol g⁻¹	15.07^a	10.91^b	10.97^b	0.737	0.011

Feeding groups: C control group, FRA weaners receiving a diet with 8% FRSMb and feed additives, FR weaners receiving a diet with 8% FRSMb without feed additives, UA uric acid, UREA urea, CREAT creatinine, BIL bilirubin, SOD superoxide dismutase, CAT catalase, FRAP total antioxidant potential, MDA malondialdehyde, LOOH peroxides.
SEM standard error of the mean.
^a,b,cMeans within a row with different superscripts differ significantly (p ≤ 0.05).

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