. 2024 May 13;13(10):1515. doi: 10.3390/foods13101515

Table 4.

Effect of free and nanoencapsulated rosemary essential oil on the performance of broiler chicken.

Parameter	Dietary Treatments							SEM	p-Value
Parameter	CON	AB	CS	REO_F100	REO_F200	REO_N100	REO_N200	SEM	p-Value
BWG, g
7–21 d	477	494	478	480	486	497	518	4.78	0.233
22–42 d	1265 ^b	1356 ^ab	1298 ^ab	1301 ^ab	1321 ^ab	1351 ^ab	1381 ^a	12.01	<0.001
7–42 d	1742 ^c	1850 ^ab	1776 ^bc	1781 ^bc	1807 ^bc	1848 ^ab	1899 ^a	12.56	0.035
FI, g
7–21 d	599	587	591	593	593	597	594	2.60	0.942
22–42 d	2490	2482	2485	2474	2478	2462	2474	8.69	0.992
7–42 d	3088	3069	3076	3067	3071	3058	3068	8.26	0.987
FCR
7–21 d	1.26	1.19	1.24	1.24	1.22	1.20	1.15	0.013	0.343
22–42 d	1.97 ^a	1.83 ^ab	1.92 ^ab	1.91 ^ab	1.88 ^ab	1.82 ^ab	1.80 ^b	0.017	0.048
7–42 d	1.77 ^a	1.66 ^bc	1.73 ^ab	1.72 ^ab	1.70 ^ab	1.66 ^bc	1.62 ^c	0.012	0.001

Means with different superscripts in the same row differ significantly (p < 0.05); CON (control) fed basal diet only, AB (antibiotic) fed basal diet + 10 g/ton enramycin, CS (Chitosan) fed basal diet + 150 mg/kg chitosan nanoparticles, REO_F100 and REO_F200 fed basal diet + 100 mg/kg and 200 mg/kg free REO, respectively, REO_N100 and REO_N200 fed basal diet + 100 mg/kg and 200 mg/kg nanoencapsulated REO, respectively; BWG: body weight gain; FI: feed intake; FCR: feed conversion ratio; SEM: standard error of the mean.