Effect of supplemental glycerol monolaurate and oregano essential oil blend on the growth performance, intestinal morphology, and amino acid digestibility of broiler chickens

Table 5 Effects of supplemental GLM and oregano EO blend on the economic value of the diets

Parameters	T1	T2	T3	T4	SEM	Regression *
						Linear	Quadratic	Cubic
Total return (USD)/bird	2.69^b	2.88^ab	2.82^ab	2.98^a	0.043	0.04	0.87	0.17
Net profit (USD)	0.92	1.10	1.02	1.08	0.027	0.09	0.26	0.08
Total costs (USD)	1.76	1.77	1.79	1.89	0.024	0.06	0.32	0.74
Feed costs (USD)	1.28	1.29	1.32	1.42	0.024	0.06	0.32	0.74
Economic efficiency	0.71	0.85	0.77	0.76	0.020	0.68	0.08	0.12
Feed cost/kg gain (USD)	0.72	0.68	0.71	0.72	0.007	0.97	0.07	0.18
Performance index%	92.34^b	105.31^ab	104.47^ab	114.25^a	2.71	0.007	0.71	0.21

^{a, b} Means within the same row carrying different superscripts are significantly different at (P < 0.05). T1: Control group; T2, T3, and T4: basal diet supplemented with 0.15 or 0.45 or 0.75% mixture of GLM and EO, respectively. * Regression is significant at P < 0.05

ISSN: 1746-6148