Table 1.

Effect of L-Threonine and Mycofix Plus (MP) on performance of broilers exposed to Aflatoxin B₁, Cobb 500.

				Starter, 1 to 8 Days			Grower, 9 to 18 Days
Treatments	L-Threonine, % of Requirements	MP, g/kg	Aflatoxin B1, 500 µg/kg	FI 1, g	BWG 2, g	FCR 3	FI, g	BWG, g	FCR
T1	100	0	−	174.1	140.5	1.24	544.4 b	331.2	1.64
T2	100	0	+	176.2	140.1	1.26	543.4 b	309.6	1.77
T3	100	1	−	176.2	138.9	1.27	542.7 b	316.4	1.72
T4	100	1	+	178.0	143.2	1.25	546.4 a,b	316.5	1.73
T5	125	0	−	178.3	140.2	1.28	543.7 b	306.7	1.78
T6	125	0	+	175.7	139.8	1.26	545.3 a,b	303.1	1.81
T7	125	1	−	175.1	141.6	1.24	548.9 a	324.8	1.71
T8	125	1	+	177.8	139.1	1.28	547.3 a,b	305.8	1.81
Pooled SEM				2.25	3.52	0.02	1.43	9.23	0.05
Main Effects			Levels	Means 4
L-Threonine			100	176.1	140.7	1.25	544.2 b	318.4	1.72
			125	176.7	140.2	1.26	546.3 a	310.1	1.78
Mycofix Plus			0	176.1	140.1	1.26	544.2 b	312.7	1.75
			1	176.8	140.7	1.26	546.4 a	315.9	1.74
Aflatoxin B1			−	175.9	140.3	1.26	544.9	319.8	1.71
			+	176.9	140.5	1.26	545.6	308.8	1.78
Main Effects and Interaction Effects				p-values
L-Threonine				NS	NS	NS	*	NS	NS
Mycofix Plus				NS	NS	NS	*	NS	NS
Aflatoxin B1				NS	NS	NS	NS	NS	NS
L-Threonine × Mycofix Plus				NS	NS	NS	NS	NS	NS
L-Threonine × Aflatoxin B1				NS	NS	NS	NS	NS	NS
Mycofix Plus × Aflatoxin B1				NS	NS	NS	NS	NS	NS
L-Threonine × Mycofix Plus × Aflatoxin B1				NS	NS	NS	NS	NS	NS

^a,b Means within a column with differing superscripts are significantly different at * p < 0.05; NS, p ≥ 0.05. ¹ Feed Intake. ² Body Weight Gain. ³ Feed Conversion Ratio. ⁴ Means represent 32 pens of chickens with 10 birds per pen (n = 32/group).