. 2021 Sep 25;17:312. doi: 10.1186/s12917-021-03022-5

Table 3.

Effects of supplemental GLM and oregano EO blend on the broilers’ morphometric measures (μm) of the small intestine

Parameters	T1	T2	T3	T4	SEM	Regression *
						Linear	Quadratic	Cubic
Duodenum
Muscle thickness	121.80^c	114.23^c	168.8^b	229.10^a	10.30	0.00	0.00	0.05
Crypt depth	247.98^b	158.22^c	236.41^b	345.98^a	11.78	0.00	0.00	0.06
Villus height	582.39^b	1213.89^a	1185.71^a	1192.57^a	50.01	0.00	0.00	0.002
Goblet cell count	25^a	18.33^b	20^b	17.66^b	1.22	0.02	0.22	0.13
Jejunum
Muscle thickness	117.06^c	387.91^a	416.42^a	237.89^b	21.90	0.001	0.00	0.66
Crypt depth	252.83	278.4	216.46	222.06	10.60	0.05	0.54	0.05
Villus height	672.81^c	1070.14^b	962.60^b	1251.40^a	55.57	0.00	0.09	0.00
Goblet cell count	40.66^a	32.33^ab	27.66^b	25^b	1.48	0.00	0.16	0.84
Ileum
Muscle thickness	219.02^b	356.87^a	336.22^a	366.26^a	15.93	0.00	0.00	0.001
Crypt depth	117.06^b	209.70^a	133.64^b	138.99^b	8.59	0.81	0.002	0.00
Villus height	323.87^c	619.15^ab	562.82^b	634.54^a	23.81	0.00	0.00	0.00
Goblet cell count	70^a	55^b	45.33^b	52.66^b	2.37	0.001	0.004	0.37

^a,b,cMeans within the same row carrying different superscripts are significantly different (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