TABLE 3.

Blood biochemical parameters of laying Bovan brown layers supplemented with different levels of dried thyme leaf meal.

	Treatment a
Parameter	Control	TLM1.5	TLM2.5	TLM3.5	SEM b	p c
Aspartate amino transferase (IU/L)	175c	156b	150b	136a	4.03	<0.001
Alanine amino transferase (IU/L)	3.97c	2.9ab	3.2b	2.4a	0.214	<0.001
Albumin (mmol/L)	1.43c	1.67ab	1.72b	1.57a	0.034	<0.001
Alkaline phosphatase (IU/L)	348d	464c	805b	904a	18	<0.001
Uric acid (mmol/L)	2.77	2.2	3.37	2.29	0.419	0.218
Luteinizing hormone (ng/mL)	0.396ab	0.341b	0.437a	0.378ab	0.026	<0.001
Prolactin (ng/mL)	0.047	0.112	0.132	0.12	0.058	0.244
Progesterone (ng/mL)	0.32b	0.396b	1.12a	0.614b	0.165	<0.001

Note: Means in a row with different superscripts are significantly different (p ≤ 0.05).

^a Control, TLM1.5, TLM2.5 and LM3.5 = commercial laying hen concentrate, control + 1.5% Thymus schimperi leaf meal, control + 2.5% Thymus schimperi leaf meal and control + 3.5% Thymus schimperi leaf meal, respectively.

^b SEM: standard error mean.

^c * = p ≤ 0.05. ns = p > 0.05.