. 2023 Oct 29;103(1):103257. doi: 10.1016/j.psj.2023.103257

Table 8.

The effect of thermal manipulation at 12 to 18 d of incubation on body weight, feed consumption, and feed conversion ratio of chicks exposed to thermal challenge at 8 to 18 wk of age.

Treatments	G1	G2	P value
Treatments	(Control)	(T.M.)	P value
Interval weeks body weight (g)
At the 8^th week	493.92 ± 5.56	527.46 ± 4.60	0.094
At the 10^th week	670.97^b ± 5.42	755.37^a ± 6.43	0.045
At the 14^th week	1050.01^b ± 10.92	1245.37^a ± 11.61	0.001
At the 18^th week	1500.58^b ± 11.76	1845.92^a ± 19.41	0.001
Feed consumption (g/bird/period)
From 8 to 10 wk	700.87 ± 7.36	711.98 ± 7.31	0.811
From 11 to 14 wk	1500.61^b ± 14.94	1550.09^a ± 12.00	0.002
From 15 to 18 wk	1800.70^b ± 11.22	1900.01^a ± 14.09	0.001
From 8 to 18 wk	4002.19^b ± 17.86	4151.09^a ± 19.38	0.001
Feed conversion ratio (g feed/g gain)
From 8 to 10 wk	3.88^a ± 0.05	3.07^b ± 0.04	0.001
From 11 to 14 wk	3.94^a ± 0.06	3.16^b ± 0.03	0.001
From 15 to 18 wk	4.00^a ± 0.03	3.16^b ± 0.03	0.001
From 8 to 18 wk	3.96^a ± 0.03	3.14^b ± 0.03	0.001

^a,b

Means having different letters in the same row are significantly different (P ≤ 0.05).

T.M. = temperature manipulation.