The effect of different dietary levels of DL-methionine and DL-hydroxy analogue on the antioxidant status of young turkeys infected with the haemorrhagic enteritis virus

Table 3 Biochemical blood parameters in turkeys fed diets with different Met sources and content (n = 8)

	Biochemical blood parameters⁵
	GLU mmol/l	TP g/l	ALB μmol/l	TAG mmol/l	TC mmol/l	UA μmol/l	ALT U/l	AST U/l	ALP U/l	CK U/l	LDH U/l
Treatment¹
DLM_L	17.7	31.4	174	0.68	2.87	288^ab	6.39	211	1412	2288	932
MHA_L	18.0	28.7	190	0.50	2.62	226^b	5.24	226	1447	2669	1164
DLM_H	18.1	27.4	187	0.63	3.03	284^ab	7.15	238	1325	2779	1101
MHA_H	19.5	29.6	184	0.70	2.68	354^a	5.49	228	1203	2261	1163
Dosage² (D)
Low	17.9	30.1	182	0.59	2.75	257	5.81	218	1430	2479	1048
High	18.8	28.5	186	0.66	2.85	319	6.32	233	1264	2520	1132
Source³ (S)
DLM	17.9	29.4	181	0.66	2.95	286	6.77	225	1368	2534	1017
MHA	18.8	29.2	187	0.60	2.65	290	5.36	227	1325	2464	1163
p-values
D	0.310	0.257	0.722	0.461	0.611	0.019	0.567	0.348	0.090	0.878	0.591
S	0.347	0.870	0.474	0.573	0.161	0.861	0.119	0.868	0.650	0.796	0.352
D × S	0.529	0.075	0.325	0.211	0.805	0.013	0.771	0.420	0.412	0.099	0.589
SEM⁴	0.431	0.699	4.563	0.049	0.103	14.46	0.437	7.653	47.85	131.0	75.60

¹Diets fed to turkeys containing DL-methionine (DLM_L and DLM_H) and the equivalent amount of DL-methionine hydroxyl analogue (MHA_L and MHA_H) at two levels: low (_L) and high - (_H)
²Low level - 0.55 and 0.45% and high level - 0.78, 0.65%, in weeks 1–4 and 5–8 of feeding
³Sources of methionine: DL-isomer (DLM) and DL-methionine hydroxy analogue (MHA)
⁴SEM, standard error of the mean
⁵GLU: glucose, TP: total protein, ALB: albumin, TAG: triacylglycerols, TC: total cholesterol, UA: uric acid, AST: aspartate aminotransferase, ALT: alanine aminotransferase, ALP: alkaline phosphatase, CK: creatine kinase, LDH: lactate dehydrogenase
^a-bvalues differ significantly

ISSN: 1746-6148