Performance and economic viability of broiler chicken fed diets with multienzyme complexes

Pasquali, Guilherme Aguiar Mateus; Oliveira, Raphael Fortes de; Aiello, Paula Andressa Bedim; Polycarpo, Gustavo do Valle; Crivellari, Rafael; Cruz-Polycarpo, Valquíria Cação da

doi:10.4025/actascianimsci.v39i1.32765

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PRODUÇÃO ANIMAL • Acta Sci., Anim. Sci. 39 (1) • Mar 2017 • https://doi.org/10.4025/actascianimsci.v39i1.32765 copy

Performance and economic viability of broiler chicken fed diets with multienzyme complexes

Desempenho e viabilidade econômica com utilização de complexos enzimáticos em dietas para frangos de corte

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT.

This study evaluated the effect of multienzyme complexes (EC1 and EC2) in low nutritional density diets on performance and economic viability of broilers. A total of 840 day-old chicks were assigned to 7 treatments, distributed in a completely randomized design: (1) PC: positive control, basal diet formulated to meet nutritional requirements; (2) NC1: negative control, reduced energy and nutrient density diet without enzymes; (3) NC1+EC1; (4) NC2: negative control, diet formulated with 7% over-estimated crude protein and amino acids of soybean meal without enzymes; (5) NC2+EC2; (6) NC3: negative control, reduced energy and nutrient density diet and over-estimation of crude protein and amino acids of soybean meal; (7) NC3+EC1+EC2. Feeding NC1 or NC3 impaired feed conversion ratio at 7, 21 and 42 days, and NC2 at 21 days. Inclusion of EC2 in NC2 diet improved feed conversion ratio and kept it similar to basal diets from 1 to 21 days. Association of EC1 with EC2 in NC3 diet did not improve performance. In summary, inclusion of EC2 in diets with reduced nutrient density keep feed conversion ratio similar to basal diets from 1 to 21 days but does not improve performance of broiler chicken from 1 to 42 days post-hatch.

Keywords:
exogenous enzymes; poultry; enzyme complexes

Ingredients (%)	Pre-starter				Starter
Ingredients (%)	CP	CN1	CN2	CN3	CP	CN1	CN2	CN3
Corn	54.71	58.15	58.41	59.72	58.90	62.35	62.25	63.56
Soybean meal¹	38.51	37.53	35.37	34.81	34.95	33.97	32.11	31.54
Soybean oil	2.32	0.41	1.67	0.48	2.27	0.36	1.68	0.49
Limestone	0.92	1.17	0.92	1.16	0.91	1.16	0.91	1.15
Dicalcium phosphate	1.89	1.11	1.92	1.15	1.53	0.74	1.55	0.78
Common salt	0.35	0.35	0.35	0.35	0.35	0.35	0.35	0.35
Sodium bicarbonate	0.23	0.23	0.23	0.23	0.19	0.19	0.19	0.19
DL-methionine	0.35	0.33	0.35	0.33	0.28	0.26	0.28	0.26
L-lysine	0.22	0.21	0.23	0.21	0.16	0.15	0.17	0.16
L-threonine	0.10	0.09	0.10	0.09	0.06	0.05	0.06	0.05
Premix^2,3	0.40	0.40	0.40	0.40	0.40	0.40	0.40	0.40
Inert	-	0.02	0.05	1.07	-	0.02	0.05	1.07
Total	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
Calculated Composition
AMEn (kcal kg^-1)	2.950	2.875	2.950	2.875	3.000	2.925	3.000	2.925
Crude protein (%)	22.20	22.00	22.20	22.00	20.80	20.60	20.80	20.60
Dig. Methionine (%)	0.63	0.62	0.63	0.62	0.55	0.54	0.55	0.54
Dig. Met+Cys (%)	0.92	0.90	0.92	0.90	0.83	0.81	0.83	0.81
Dig. Lysine (%)	1.31	1.28	1.31	1.28	1.17	1.14	1.17	1.14
Dig. Threonine (%)	0.84	0.83	0.84	0.83	0.80	0.79	0.80	0.79
Calcium (%)	0.92	0.82	0.92	0.82	0.82	0.72	0.82	0.72
Av. Phosphorus (%)	0.40	0.30	0.40	0.30	0.34	0.24	0.34	0.24
Sodium (%)	0.22	0.22	0.22	0.22	0.21	0.21	0.21	0.21

Ingredients (%)	Grower				Finisher
Ingredients (%)	CP	CN1	CN2	CN3	CP	CN1	CN2	CN3
Corn	61.51	64.96	64.54	67.90	66.15	69.61	68.78	72.14
Soybean meal¹	31.73	30.74	29.15	28.25	27.55	26.56	25.31	24.41
Soybean oil	3.26	1.35	2.73	0.83	3.10	1.19	2.65	0.75
Limestone	0.82	1.07	0.82	1.07	0.77	1.01	0.77	1.01
Dicalcium phosphate	1.33	0.55	1.36	0.58	1.07	0.29	1.09	0.31
Common salt	0.35	0.35	0.35	0.35	0.35	0.35	0.35	0.35
Sodium bicarbonate	0.16	0.16	0.16	0.15	0.14	0.14	0.14	0.14
DL-methionine	0.25	0.23	0.25	0.23	0.24	0.22	0.23	0.21
L-lysine	0.15	0.14	0.15	0.14	0.18	0.17	0.18	0.17
L-threonine	0.04	0.03	0.04	0.03	0.05	0.04	0.05	0.04
Premix^2,3	0.40	0.40	0.40	0.40	0.40	0.40	0.40	0.40
Inert	-	0.02	0.05	0.07	-	0.02	0.05	0.07
Total	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
Calculated Composition
AMEn (kcal kg^-1)	3.100	3.025	3.100	3.025	3.150	3.075	3.150	3.075
Crude protein (%)	19.50	19.30	19.50	19.30	18.00	17.80	18.00	17.80
Dig. Methionine (%)	0.52	0.51	0.52	0.51	0.48	0.47	0.48	0.47
Dig. Met+Cys (%)	0.79	0.77	0.79	0.77	0.74	0.72	0.74	0.72
Dig. Lysine (%)	1.08	1.05	1.08	1.05	1.01	0.98	1.01	0.98
Dig. Threonine (%)	0.70	0.69	0.70	0.69	0.66	0.65	0.66	0.65
Calcium (%)	0.73	0.63	0.73	0.63	0.64	0.54	0.64	0.54
Av. Phosphorus (%)	0.31	0.21	0.31	0.21	0.27	0.17	0.27	0.17
Sodium (%)	0.20	0.20	0.20	0.20	0.19	0.19	0.19	0.19

Diet	Enzyme complex	WG (g)	FI (g)	FCR	VB (%)
Diet		1 to 7 days
PC	-	145	156	1.076a	VB (%)	99.22
NC1	-	134	162	1.217bc	99.19
NC1	EC1	138	158	1.156abc	98.39
NC2	-	146	162	1.113ab	100.0
NC2	EC2	138	153	1.110ab	99.19
NC3	-	136	167	1.239c	99.19
NC3	EC1+EC2	137	164	1.208bc	100.0
P-value		0.101	0.196	< 0.05	0.704
CV (%)		5.14	5.18	7.68	1.35
	1 to 21 days
PC	-	882a	1197	1.365a	97.61
NC1	-	791c	1161	1.480b	97.58
NC1	EC1	823bc	1167	1.426ab	97.58
NC2	-	836abc	1222	1.483b	97.58
NC2	EC2	867ab	1170	1.369a	95.97
NC3	-	803c	1171	1.480b	95.97
NC3	EC1+EC2	814bc	1167	1.440ab	99.19
P-value		< 0.05	0.287	< 0.05	0.741
CV (%)		5.64	3.36	4.91	2.86
	1 to 42 days
PC	-	2654a	4405	1.673a	96.02
NC1	-	2426cd	4235	1.759b	96.77
NC1	EC1	2498bc	4263	1.723b	95.99
NC2	-	2597ab	4417	1.713ab	96.77
NC2	EC2	2499bc	4238	1.717ab	93.55
NC3	-	2367d	4244	1.813c	95.16
NC3	EC1+EC2	2450cd	4278	1.758b	96.77
P-value		< 0.01	0.086	< 0.01	0.890
CV (%)		4.56	2.81	2.90	3.76

Diet	Enzyme complex	Feed cost (R$ kg^-1)	Cost per bird (R$ bird^-1)	Profit per bird (R$ bird^-1)	Profitability Index (%)
PC	-	0.68	5.15	0.99	13.2
NC1	-	0.63	4.77	0.81	12.1
NC1	EC1	0.64	4.85	0.94	13.4
NC2	-	0.67	5.06	0.86	9.4
NC2	EC2	0.67	5.07	0.91	12.9
NC3	-	0.63	4.80	0.74	9.5
NC3	EC1+EC2	0.64	4.82	0.83	12.2

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