Table 3. Growth performance and internal organ weights of rats fed with CON, ABF, and HBF for four and eight weeks

Items	Diets						SEM	Effects
	Four weeks			Eight weeks				Fat (F)	Period (P)	F × P
	CON	ABF	HBF	CON	ABF	HBF
Growth performance (g)
Initial BW	195.17	198.54	185.73	197.48	197.75	186.3	4.448	0.073	0.880	0.963
Final BW	348.47d	355.49c	357.04c	437.76b	437.86b	445.88a	2.942	0.049	< .0001	0.859
ADG	5.68b	5.81b	6.34a	4.29d	4.29d	4.64c	0.125	0.015	< .0001	0.186
Weight gain	153.31d	156.95d	171.31c	240.29b	240.10b	259.58a	3.388	0.048	< .0001	0.075
Daily feed intake	18.64c	19.78b	19.91b	19.84b	20.53a	20.73a	4.426	0.026	< .0001	0.370
ADG/FI	0.30a	0.29b	0.32a	0.22c	0.21d	0.22c	0.006	0.029	< .0001	0.032
Organ weight (g)
Liver	11.11	10.22	10.74	14.85	14.21	14.59	0.301	0.285	< .0001	0.990
Kidney	1.97	1.99	1.96	2.64	2.70	2.75	0.066	0.742	< .0001	0.673
Heart	1.18	1.12	1.19	1.48	1.35	1.42	0.027	0.240	< .0001	0.560
Lung	1.61	1.52	1.56	1.74	1.73	1.73	0.025	0.622	< .0001	0.801
Spleen	0.75	0.82	0.83	0.92	0.86	0.98	0.021	0.235	0.001	0.430

Mean values not having a common letter in the same row are significantly different.
CON, control; ABF, Angus beef fat; HBF, Hanwoo beef fat; BW, body weight; ADG, average daily gain; FI, feed intake.