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. 2020 Jul 11;6(7):e04400. doi: 10.1016/j.heliyon.2020.e04400

Table 3.

Effect of strain (Ross or Cobb) and Sex (Male or Female) on weekly feed consumption (FC = g/bird/day).

Strain²	Sex	Weekly Feed Consumption¹
		0–7 d	7–14 d	14–21 d	21–28 d	28–35 d	35–42 d
		(g)
Ross		22.64	68.93	113.52	140.33	188.86	231.52
Cobb		21.17	67.87	114.79	139.41	187.71	231.34
	Male	21.83	69.72	118.90	149.28	202.15	244.24
	Female	21.98	67.08	109.41	130.46	174.42	218.62
SEM³		0.34	0.62	0.92	0.98	1.15	2.47
Ross Male		22.50	71.10	120.08^A	150.99	204.01	245.77
Ross Female		22.79	66.76	106.96^C	129.66	173.72	217.28
Cobb Male		21.16	68.34	117.72^A	147.57	200.29	242.72
Cobb Female		21.17	67.41	111.86^B	131.24	175.13	219.96
SEM³		0.48	0.88	1.31	1.38	1.63	3.49
		(Probability > F)

Strain		0.004	0.237	0.336	0.511	0.482	0.957
Sex		0.755	0.005	<0.001	<0.001	<0.001	<0.001
Strain x Sex		0.783	0.059	0.009	0.080	0.125	0.482

^ab Means within a column of 3 or more independent variables lacking a common superscript differ significantly (P < 0.05).

¹

Main and interaction effect means calculated using total pen feed consumption (g)/number of birds/days = FC (g/bird/day).

²

Ross 708 and Cobb 500.

³

SEM = Standard error of mean, main effect means of strain and sex calculated using n = 20.