. 2024 Jun 26;37(12):2145–2154. doi: 10.5713/ab.24.0136

Table 2.

Effect of protease and organic acids supplementation on growth performance in broilers fed poultry by-product meal based diet

Parameters	Treatments¹⁾					SEM	p-value

	Cont	PBM	PBMP	PBMO	PBMPO
Starter phase (d 1 to 2¹⁾
Weight gain (g)	942.7^a	938.2^a	930.0^a	870.1^b	891.8^ab	14.29	0.031
Feed intake (g)	1,271.0^a	1,294.1^a	1,238.3^ab	1,174.5^b	1,238.4^ab	20.16	0.013
FCR (g/g)	1.35	1.38	1.33	1.35	1.39	0.01	0.462
Finisher phase (d 22 to 35)
Weight gain (g)	1,056.4	1,009.1	998.6	1,028	950.8	17.47	0.531
Feed intake (g)	1,897.3	2,008.2	1,923.3	1,970	1,885.5	22.99	0.563
FCR (g/g)	1.81	2.01	1.93	1.92	1.98	0.03	0.226
Overall period (d 1 to 35)
Weight gain (g)	1,979.1	1,947.3	1,928.6	1,898.1	1,842.6	23.22	0.249
Feed intake (g)	3,298.3	3,302.3	3,141.6	3,144.5	3,123.9	40.24	0.412
FCR (g/g)	1.67^ab	1.70^a	1.63^b	1.66^ab	1.70^a	0.01	0.043

SEM, standard error of the mean; FCR, feed conversion ratio.

¹⁾

Cont, standard broiler ration; PBM, control diet with 25% of the soybean meal replaced by poultry by-product meal (PBM) on an equivalent protein basis; PBMP, PBM diet supplemented with 0.5 g/kg of protease; PBMO, PBM diet supplemented with 1 g/kg organic acid; PBMPO, PBM diet supplemented with 0.5 g/kg protease and 1 g/kg organic acid.

^a,b

Values within the same row with different superscripts, differ significantly (p<0.05).