TABLE 3.

Effects of dietary treatments on production performance of the laying hens

Productive performance	Treatments				SEM a	p‐values
	C	LEO	MEO	LEO + MEO
Body weight changes (g)
52–56 weeks	55.9	52.1	49.7	59.0	32.07	.167
Feed intake (g/hen/day)
42–46 weeks	110	108	108	109	0.627	.362
47–51 weeks	109	109	109	109	0.195	.574
52–56 weeks	109	109	109	108	0.510	.609
42–56 weeks (overall period)	109	109	109	109	0.350	.576
Feed conversion ratio (feed/egg)
42–46 weeks	2.22b	2.15b	2.97 a	2.92 a	0.050	.001
47–51 weeks	2.55	2.59	2.55	2.44	0.094	.732
52–56 weeks	2.01	1.93	1.93	1.85	0.072	.471
42–56 weeks (overall period)	2.26b	2.23b	2.48 a	2.40 a	0.059	.022
Hen‐day egg production (%)
42–46 weeks	77.8 a	80.4 a	58.7b	59.0b	1.43	.001
47–51 weeks	67.0	67.1	67.8	68.1	2.12	.977
52–56 weeks	85.0	89.6	91.1	89.9	2.92	.491
42–56 weeks (overall period)	76.6 a	79.0 a	72.5b	72.3b	1.79	.040
Egg mass (g/hen/day)
42–46 weeks	49.5 a	50.61 a	36.5b	37.4b	0.969	.001
47–51 weeks	43.5	42.40	43.4	45.0	1.48	.678
52–56 weeks	54.9	56.50	56.7	58.8	1.89	.549
42–56 weeks (overall period)	49.3 a	49.8 a	45.5b	47.1 a	1.24	.077

Means within a row with different superscripts are significantly different (p < .05).

Abbreviations: C, control group; LEO + MEO, lavender essential oil + mint essential oil; LEO, lavender essential oil; MEO, mint essential oil.

^aStandard error of mean.