Exogenous enzymes in diets for broilers

Dalólio, Felipe Santos; Moreira, Joerley; Vaz, Diêgo Pereira; Albino, Luiz Fernando Teixeira; Valadares, Leonora Ribeiro; Pires, A. V.; Pinheiro, Sandra Regina de Freitas

doi:10.1590/s1519-99402016000200003

Cited by 24 publications

(22 citation statements)

References 25 publications

(12 reference statements)

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“…These results are similar to the findings by [8,12,[31][32][33][34]. The effect of the enzyme cocktail was attributed to improved digestibility and increased protein and energy availability for growth [32][33][34][35][36][37][38][39][40].…”

Section: Discussionsupporting

confidence: 85%

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Influence of Different Time and Frequency of Multienzyme Application on the Efficiency of Broiler Chicken Rearing and Some Selected Metabolic Indicators

Attia

Al‐Harthi

El-Shafey

2020

Animals

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This study looks at the influence of time and/or frequency of multienzymes application on productivity, carcass characteristics, metabolic profile, and red blood cell characteristics of broiler chickens. Two hundred and eighty, one-day-old Arbor Acres broiler male chicks were randomly distributed into seven treatment groups. Each group consisted of eight replicates of five unsexed birds. The same basal diet was fed in a crumble form to all experimental groups: group one was the unsupplemented control that did not receive multienzymes supplementation. Additionally, multienzymes in water were supplemented in six groups in a factorial arrangement, including three times of application (starter time only which included days 1–21 of age, grower time only which included days 22–37 of age, and starter and grower time which included days 1–37 of age) and two application frequencies (continuously or intermittently). In the continuous application, the multienzymes were added to water over 24 h in a day, while in the intermittent frequency multienzymes were added to water for one day followed by a day off according to the time of application. Regardless of time and frequency of application, enzymes supplementation significantly increased growth rate, feed intake, European Production Index (EPI), protein digestibility, serum albumin, and high-density lipoprotein (HDL). Intermittent multienzymes application during days 1–21 of age or days 22–37 of age resulted in significantly greater growth, better feed conversion rate (FCR), and higher EPI of broilers during the whole rearing period than those under continuous multienzymes during different growth periods. Besides, intermittent multienzymes addition during days 1–37 of age improved FCR of broiler chicks compared to constant application. The intermittent addition of multienzymes during days 1–21 of age or 22–37 days of age and days 1–37 of age caused a significant increase in dry matter (DM) digestibility than the continuous application. The intermittent addition of multienzymes during days 1–21 of age significantly increased the digestibility of crude protein (CP), ether extract (EE), and crude fiber (CF) compared to continuous application. A similar trend was shown in the digestibility of CP and EE due to intermittent use during days 22–37 of age. Intermittent enzymes addition significantly increased high density lipoprotein (HDL) of groups receiving enzymes during days 22–37 of age compared to continuous application of enzymes. In conclusion, the use of multienzymes intermittently during days 1–21 of age and 22–37 days of age significantly increased growth, improved FCR, and raised EPI. Intermittent use can replace continuous multienzyme applications which can save 68.6% of the cost, even though further research is need from the cost-saving edge.

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Section: Discussionsupporting

confidence: 85%

“…These authors indicated that application with enzymes did not affect carcass parameters and body organs of broilers and Japanese quail except for liver percent that was reduced with multienzymes application. Likewise, carcass traits were not influenced by dietary enzyme addition to broiler chicken diets [29,40,41].…”

Section: Discussionmentioning

confidence: 92%

Influence of Different Time and Frequency of Multienzyme Application on the Efficiency of Broiler Chicken Rearing and Some Selected Metabolic Indicators

Attia

Al‐Harthi

El-Shafey

2020

Animals

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“…Além disso, Dalólio et al (2016) relatam que a utilização de complexos enzimáticos pode promover maior rendimento de carcaça e deposição de carne, consequentemente, com este aumento na deposição de proteína pode alterar o tipo e a forma de fibra a ser depositada no substrato e pode, portanto, modificar os parâmetros de qualidade da carne.…”

Section: Introductionunclassified

Características produtivas e qualitativas de frangos de corte alimentados com diferentes complexos enzimáticos

Filho

Oliveira

Boas³

et al. 2018

Bol. Ind. Anim.

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RESUMO: O objetivo desse trabalho foi avaliar a efetividade de diferentes complexos enzimáticos nas características produtivas e qualitativas em frangos de corte. Foram utilizados 936 pintainhos de corte macho, da linhagem Hubbard, distribuídos em um delineamento em blocos ao acaso, com seis tratamentos, seis repetições e 26 aves por parcela. Os tratamentos consistiram em controle positivo, controle negativo e utilização de quatro complexos enzimáticos utilizados em rações com desvalorização energética de acordo com a matriz energética das enzimas. Foi analisado o desempenho, características de carcaça e qualidade de carne. O uso dos diferentes complexos enzimáticos (CE1 e CE2) e suas desvalorizações proporcionaram maior consumo de ração e de energia em relação aos tratamentos CP, CN, CE3 e CE4, porém isto não refletiu no ganho de peso, conversão alimentar, índice de eficiência produtiva, além das características de carcaça, cortes e qualidade de carne. Conclui-se que a utilização de componentes enzimáticos altera desempenho das aves, sem alterar as características de carcaça e carne.

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“…The use of exogenous enzymes has been investigated in animal nutrition due to their ability to improve the use of low-digestible ingredients (Barbosa et al, 2014); reduce nutrients losses through excretion as well as environmental pollution (Leite et al, 2011); and improve performance and carcass characteristics in broilers (Dalólio et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Xylanase and β-glucanase in maize- and soybean meal-based diets for broilers

Diana

Albino

Rostagno

et al. 2020

Semina: Ciênc. Agrár.

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The objective of this study was to evaluate the effect of adding different xylanase and ?-glucanase enzyme blends to maize- and soybean meal-based diets on performance and energy metabolizability in broilers. Two experiments were carried out with broilers of the COBB 500 strain. In the first experiment, 1960 chicks were assigned to a completely randomized design with a 2 × 3 + 1 factorial arrangement, totaling seven treatments, namely, T1- Positive control (PC); T2 - Negative control 1 (NC1; PC minus 200 kcal kg-1 ME); T3 - NC1 + Blend A; T4 - NC1 + Blend B; T5 - Negative control 2 (NC2; PC minus 167 kcal kg-1 ME and 5% amino acids); T6 - NC2 + Blend A; and T7 - NC2 + Blend B. Fourteen replicates were used per treatment and 20 birds per experimental unit. The parameters evaluated at 21 and 42 days of age were weight gain (WG), feed intake (FI) and feed conversion (FC). At 42 days, production efficiency index (PEI), viability and the yields of cuts were also calculated. Birds that received diets with a reduced nutritional value showed a reduction in WG and PEI and worsened FC as compared those of PC treatment (p < 0.05). However, the birds that consumed the NC2 diet with Blend B exhibited a similar WG to those in PC group (p > 0.05) from 1 to 21 days of life. For the yield of thigh + drumstick, the factors were statistically similar (p > 0.05) to those observed in the PC birds. In the second experiment, 432 fourteen-day-old chicks were distributed in a completely randomized design with seven treatments, with eight replicates per treatment and six birds per experimental unit. The apparent metabolizable energy (AME) and nitrogen-corrected AME (AMEn) values were determined. Overall, the NC2 diet with Blend B provided the highest AME and AMEn values; however, NC1 with the same enzyme blend was the treatment which provided the lowest values. The addition of xylanase and ?-glucanase enzyme blends to maize- and soybean meal-based diets improves WG at 21 days as well as PEI in broilers; however, it does not influence the yield of cuts. Enzymes (Blend B) improve the energy metabolization of broiler diets with reduced energy and amino acid levels.

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Exogenous enzymes in diets for broilers

Cited by 24 publications

References 25 publications

Influence of Different Time and Frequency of Multienzyme Application on the Efficiency of Broiler Chicken Rearing and Some Selected Metabolic Indicators

Influence of Different Time and Frequency of Multienzyme Application on the Efficiency of Broiler Chicken Rearing and Some Selected Metabolic Indicators

Características produtivas e qualitativas de frangos de corte alimentados com diferentes complexos enzimáticos

Xylanase and β-glucanase in maize- and soybean meal-based diets for broilers

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