. 2015 Dec 18;29(7):1052–1059. doi: 10.5713/ajas.15.0757

Table 2.

Effect of different red light intensity treatments on weight gain, FCR, water/feed intakes and W:F ratio

Parameter and age	High (320 lux)	Medium (20 lux)	Dim (5 lux)	Control/white (20 lux)	−VEC (12D:12L)	p
Weight gain (g/bd/week)
14–21 d	375.83^a	366.56^a	362.83^a	392.06^a	283.22^b	0.0001
22–28 d	623.89^a,b	628.00^a,b	656.72^a	622.34^a,b	578.72^b	0.0262
29–35 d	569.89^a	569.67^a	647.61^a	554.05^a	337.17^b	0.0001
Total WG	1,569.61^a	1,564.22^a	1,667.17^a	1,568.44^a	1,199.11^b	0.0001
FCR
14–21 d	1.53	1.46	1.49	1.47	1.54	0.4869
22–28 d	1.02^b	1.03^b	1.03^b	1.03^b	1.08^a	0.0135
29–35 d	1.62^b	1.54^b	1.59^b	1.57^b	1.34^a	0.0005
Total FCR	1.35^a	1.31^a	1.34^a	1.32^a	1.26^b	0.0046
Feed intake (g/bd/d)
14–21 d	82.24^a	76.48^a	77.39^a	82.27^a	62.43^b	0.0003
22–28 d	145.38^a	144.06^a,b	149.32 ^a	145.94^a	133.06^b	0.0699
29–35 d	138.26^a,b	145.17^a	149.50^a	143.18^a	128.78^b	0.0146
Total feed intake	365.88^a	365.71^a	376.21^a	371.39^a	324.27^b	0.0027
Water intake (g/bd/d)
14–21 d	182.48^a,b	167.36^b	183.58^a,b	192.06^a	143.94^c	0.0012
22–28 d	366.64^b	373.67^b	464.76^a	397.79^a,b	356.52^b	0.0322
29–35 d	322.5	300.27	305.47	323.12	299.17	0.9418
Total water intake	871.63	841.29	953.81	912.96	799.63	0.2222
W:F ratio
14–21 d	2.22	2.19	2.39	2.33	2.31	0.4815
22–28 d	2.52^b	2.59^b	3.11^a	2.72^a,b	2.67^b	0.0489
29–35 d	2.35	2.07	2.05	2.25	2.32	0.7091
Total W:F	2.3	2.3	2.5	2.4	2.4	0.6623

FCR, feed conversion ratio; W:F, water:feed ratio.

^a–c

Superscripts within a raw bearing different letters are significantly (p<0.05) differ.