. 2019 Jun 16;9(6):362. doi: 10.3390/ani9060362

Table 5.

Ross 308 broilers’ intestine segment dimensions according to feed diets from 1–6 weeks of age.

Traits		Diets									SEM	p
Traits		C	D1	D2	D3	D4	D5	D6	D7	D8	SEM	p
Duodenum	Weight, g	20.27 ^a	15.53 ^ab	14.90 ^ab	16.37 ^ab	15.64 ^ab	14.61 ^ab	13.56 ^b	14.02 ^b	12.99 ^b	1.77	*
	Length, mm	34.33 ^a	33.00 ^ab	29.60 ^abc	30.30 ^abc	26.60 ^bcd	27.60 ^abcd	24.00 ^cd	22.00 ^d	25.00 ^cd	2.27	*
	Width, mm	7.50 ^b	7.97 ^ab	7.81 ^b	8.29 ^ab	7.64 ^b	6.84 ^b	8.22 ^ab	8.13 ^ab	9.38 ^a	0.57	*
	Diameter, mm	0.94 ^b	1.16 ^b	1.17 ^b	1.61 ^a	1.67 ^a	1.68 ^a	0.89 ^b	1.05 ^b	1.21 ^b	0.12	*
Jejunum	Weight, g	60.09	51.16	51.07	57.91	52.52	47.75	46.30	60.88	46.84	0.70	NS
	Length, mm	120.00	113.10	112.30	110.00	111.66	108.33	109.00	113.66	101.00	5.71	NS
	Width, mm	9.26 ^abc	8.44 ^bc	8.23 ^a	9.50 ^ab	9.80 ^a	9.34 ^abc	8.26 ^bc	8.02 ^c	9.30 ^abc	0.40	*
	Diameter, mm	1.26 ^a	1.40 ^abc	1.01 ^c	1.25 ^bc	1.34 ^bc	1.59 ^ab	1.09 ^bc	1.20 ^bc	1.80 ^a	0.15	*
Ileum	Weight, g	9.10 ^a	5.23 ^bc	5.06 ^bc	6.39 ^b	2.67 ^d	3.95 ^dc	3.39 ^dc	2.97 ^dc	3.09 ^dc	4.82	**
	Length, mm	18.16 ^a	16.80 ^ab	11.16 ^cd	15.23 ^abc	11.66 ^cd	12.66 ^bc	13.00 ^bcd	8.00 ^d	9.26 ^d	1.51	**
	Width, mm	7.33 ^ab	5.97 ^ab	7.26 ^ab	5.39 ^b	5.27 ^b	5.92 ^ab	6.45 ^ab	7.97 ^a	6.60^ab	0.61	*
	Diameter, mm	1.03	1.14	1.05	1.43	1.48	1.54	1.35	1.08	1.32	0.16	NS
Rectum weight, g		2.14	1.80	2.29	2.23	2.11	2.30	1.78	2.32	1.82	0.30	NS
Cecum weight, g		17.13	14.22	14.12	12.74	14.54	12.62	13.74	15.97	14.56	1.98	NS
Colon weight, g		2.10 ^ab	1.28 ^b	1.73 ^ab	1.52 ^ab	2.36 ^a	1.87 ^ab	1.98 ^ab	1.62 ^ab	2.06 ^ab	0.26	*

C (Control) = diet with lysine, methionine, and L-carnitine equal to NRC recommendations; D1 = control diet supplemented with lysine at 15% in excess of NRC, methionine at 15% in excess of NRC, and L-carnitine equal to NRC; D2 = control diet supplemented with lysine at 30% in excess of NRC, methionine at 30% in excess of NRC, and L-carnitine equal to NRC; D3 = control diet supplemented with lysine equal to NRC, methionine equal to NRC, and L-carnitine at 15% in excess of NRC; D4 = control diet supplemented control diet supplemented with lysine at 15% in excess of NRC, methionine at 15% in excess of NRC, and L-carnitine at 15% in excess of NRC; D5 = control diet supplemented lysine at 30% in excess of NRC, methionine at 30% in excess of NRC, and L-carnitine at 15% in excess of NRC; D6 = control diet supplemented with lysine equal to NRC recommendations, methionine equal to NRC recommendations, and L-carnitine at 75% in excess of NRC; D7 = control diet supplemented with lysine at 15% in excess of NRC, methionine at 15% in excess of NRC, and L-carnitine at 75% in excess of NRC; D8 = control diet supplemented with lysine at 30% in excess of NRC, methionine at 30% in excess of NRC, and L-carnitine at 75% in excess of NRC, SEM = standard error of the mean; ** p < 0.001, * p < 0.05; NS = p ≥ 0.05; a,b: Means within the same row without common superscripts letters are not significantly different (p ≥ 0.05).