Efeito da enzima fitase nas rações de frangos de corte, durante as fases pré-inicial e inicial

Costa, Fernando Guilherme Perazzo; Brandão, Patrícia Araújo; Brandão, Jocelyn Santiago; Silva, José Humberto Vilar da

doi:10.1590/s1413-70542007000300037

Cited by 14 publications

(10 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…De acordo com Olukosi et al (2007), pintos de corte apresentam imaturidade do trato gastrintestinal com menor produção de enzimas endógenas e pior digestibilidade dos nutrientes da ração. Estudos com a adição de complexo enzimático, em rações elaboradas com milho e farelo de soja na fase pré-inicial, confirmam a importância das enzimas na degradação da parede celular dos vegetais, com melhor absorção dos nutrientes e desempenho de frangos de corte (Gracia et al, 2003;Costa et al, 2007).…”

Section: Resultsunclassified

Desempenho de frangos de corte e digestibilidade de rações com sorgo ou milheto e complexo enzimático

Leite

Leandro

Stringhini

et al. 2011

Pesq. agropec. bras.

View full text Add to dashboard Cite

Resumo -O objetivo deste trabalho foi avaliar a digestibilidade de rações formuladas com sorgo (Sorghum bicolor), ou milheto (Pennisetum glaucum) e adição de um complexo enzimático comercial composto de amilase, carboidrases, proteases e fitase, e o desempenho de frangos de corte. Para avaliação de desempenho, foram alojados 1.800 pintos de corte machos em delineamento em blocos ao acaso, em arranjo fatorial 2x2, com quatro tratamentos (rações com sorgo ou milheto com ou sem adição de complexo enzimático) e cinco repetições com 60 aves por unidade experimental. Nos ensaios de metabolismo realizados dos 10 aos 14 e dos 24 aos 28 dias, foram distribuídos 420 pintos machos em delineamento inteiramente casualizado, em esquema fatorial 2x2 (rações com milheto ou sorgo com ou sem adição de complexo enzimático). Os dados foram submetidos à análise de variância e as médias comparadas com o teste F para contrastes ortogonais. Nas rações elaboradas com sorgo, a adição do complexo enzimático proporcionou melhores coeficientes de digestibilidade da gordura e do nitrogênio. A adição de complexo enzimático em rações formuladas com sorgo melhora a conversão alimentar somente na fase inicial de criação dos frangos, enquanto a adição de complexo enzimático não melhora o desempenho de frango nas rações elaboradas com milheto.Termos para indexação: Pennisetum glaucum, Sorghum bicolor, conversão alimentar, nutrição animal. Broiler performance and digestibility of sorghum or millet diets with enzymatic complexesAbstract -The objective of this work was to evaluate the digestibility of sorghum (Sorghum bicolor) or millet (Pennisetum glaucum) diets with the addition of a commercial enzymatic complex formed by amylase, carbohydrases, proteases and phytase, and broiler performance. For performance evaluation, 1,800 male broilers were distributed in a randomized complete block design in a 2x2 factorial arrangement, with four treatments (sorghum or millet diet with or without addition of enzymatic complex), and five replicates of 60 birds per experimental unit. In the metabolism assays carried out at 10 to 14 and 24 to 28 days, 420 male broilers were distributed in a completely randomized block design in a 2x2 factorial arrangement (millet or sorghum diet with or without addition of enzymatic complex). Data were submitted to variance analysis and averages were compared by the F test for orthogonal contrasts. In diets formulated with sorghum, the addition of the enzymatic complex provided better coefficients of digestibility of fat and nitrogen. The addition of the enzymatic complex in diets formulated with sorghum improves feed conversion ratio only in the initial phase of raising broilers, while the addition of the enzymatic complex does not improve broiler performance in diets formulated with pearl millet.

show abstract

Section: Resultsunclassified

Desempenho de frangos de corte e digestibilidade de rações com sorgo ou milheto e complexo enzimático

Leite

Leandro

Stringhini

et al. 2011

Pesq. agropec. bras.

View full text Add to dashboard Cite

show abstract

“…Phytase improved feed to gain ratio by 3% at 500 and 750 ftu/kg (Tejedor et al, 2001) in broilers from 10 to 24 days of age, and 1.3% at 500 ftu/kg (Costa et al, 2007) in 21-day-old broilers.…”

Section: Resultsmentioning

confidence: 94%

“…Overall, broilers fed 0 or 750 ftu/kg of diet ingested similar amount of ration regardless of the P source or level, indicating that phytase did not influence feed intake (P>0.01), as reported in the literature. Costa et al (2007) and Assuena et al (2009) reported no differences in the feed intake of broilers fed diets with phytase levels varying from 250 to 1,000 ftu/kg.…”

Section: Resultsmentioning

confidence: 97%

“…However, Tejedor et al (2001) verified that both 500 and 750 ftu/kg can improve weight gain of broilers by 3.4% and 2.8%, respectively. On the other hand, Costa et al (2007) observed that different enzymes, at the same level (500 ftu/kg), can result in differences in weight gain, when compared with nonsupplemented diets. Assuena et al (2009) reported a linear reduction in weight gain of 21 and 42 day-old broilers as a result of supplementation with levels higher than 500 ftu/kg, with marked impairment of this variable at 1,000 ftu/kg.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Bioavailability and poultry fecal excretion of phosphorus from soybean-based diets supplemented with phytase

et al. 2013

View full text Add to dashboard Cite

-Five hundred and four 1-day-old Cobb broiler chickens were randomly allotted to 18 treatments and fed a semi-purified basal diet (4 g/kg total phosphorus) supplemented with 2 levels of supplemental P (0.5 or 1 g/kg) during 21 days to evaluate performance and bone mineralization; to assess the relative bioavailability of P (RBP) in wheat meal (WM) and roasted (RS) or extruded soybean meal (ES), with or without phytase (0 or 750 ftu/kg diet), using dicalcium phosphate (DC) as standard; and to estimate phosphorus excretion. Weight gain (WG), feed intake (FI), feed to gain ratio (FG), and tibia ash weigh (AW) were assessed. For each source, the RBP was calculated by the slope ratio method, when tibia ash weight was regressed on P ingested. Ingested and fecal P was determined to calculate P intake, and P excretion and excretion rate. Phytase addition increased overall FI, WG, and FG ratio by 3.3, 2.6 and 0.8%, respectively, but differences were not significant. Overall AW was increased by 10.8% after the enzyme inclusion in the diets. The relative bioavailability of phosphorus values of tested WM, RS, and ES were increased by 6.32, 64.32, 76.99%, respectively, in response to supplementation of phytase in diets containing WM, RS, and ES, respectively. Phytase reduced P excretion by 12.7% and the excretion rate by 15.0%, regardless of the phosphorus source or level.

show abstract

“…Thus, the addition of phytase to pig diets can be a viable solution to improve animal performance (Costa et al, 2007). Moreover, the use of phytase in commercial diets with low nutrient levels may be economically viable because it permits the reduction of nutrient levels in the diet formulation, which reduces costs while maintaining animal performance.…”

Section: Resultsmentioning

confidence: 99%

Nutrient reduction in rations with phytase for growing pigs

et al. 2011

View full text Add to dashboard Cite

-Two experiments were conducted to evaluate the performance, the energy and nutrient balance and economic viability of production of growing pigs fed diets with reduced levels and phytase. In experiment 1, 60 barrows and gilts (initial weight 25 ± 1.72 kg) were housed in a randomized block design with three diets, ten replicates and two animals per experimental unit (one male and one female). One of the diets was formulated with a reduced level with phytase and evaluated in comparison to a positive-control diet that was formulated according to the nutritional recommendations for animals of this breed, and a negative-control diet without phytase. The different diets did not affect feed intake, but the diet with phytase promoted better final weight, daily weight gain and feed conversion, although it did not differ from the positive control diet. In experiment 2, 27 barrows (initial weight 49 ± 3.67 kg) were housed in random blocks with three diets and nine replicates with experimental plot represented by one animal. The diets did not affect the balance of energy and nutrients but had a significant effect on the efficiency of utilization of calcium and phosphorus, which was the lowest in animals that received the positive-control diet. Economic viability improved when nutrients were reduced and phytase was added in the ration. The addition of phytase (500 ftu/kg) in rations formulated with nutritional levels reduced for growing swines improves rearing productivity and it is economical viable.Key Words: diet formulation, enzyme, metabolism, nutrition, performance Redução de nutrientes em rações com fitase para suínos em crescimento RESUMO -Dois experimentos foram conduzidos para avaliar o desempenho, o balanço de energia e nutrientes e a viabilidade econômica da produção de suínos em crescimento alimentados com rações com níveis reduzidos e fitase. No experimento 1, 60 suínos machos castrados e fêmeas (peso inicial de 25 ± 1,72 kg) foram alojados em delineamento de blocos casualizados, com três dietas, dez repetições e dois animais por unidade experimental (macho e fêmea). Uma das dietas foi formulada com nível reduzido e com fitase e avaliada em comparação a uma dieta controle positivo, formulada conforme as recomendações nutricionais para animais da linhagem, e a uma dieta controle negativo, sem fitase. As dietas não influenciaram o consumo de ração, porém aquela com fitase promoveu melhor peso final, ganho de peso diário e conversão alimentar, embora não tenha diferido da controle positivo. No experimento 2, 27 suínos machos castrados (peso inicial de 49 ± 3,67 kg) foram alojados em blocos ao acaso com três dietas e nove repetições com parcela experimental representada por um animal. As dietas não afetaram o balanço de energia e nutrientes, mas tiveram efeito significativo na eficiência de utilização de cálcio e fósforo, que foi pior nos animais que receberam a dieta controle positivo. A viabilidade econômica melhorou com a redução de nutrientes e adição de fitase na ração. A suplementação de fitase (500...

show abstract

Efeito da enzima fitase nas rações de frangos de corte, durante as fases pré-inicial e inicial

Cited by 14 publications

References 12 publications

Desempenho de frangos de corte e digestibilidade de rações com sorgo ou milheto e complexo enzimático

Desempenho de frangos de corte e digestibilidade de rações com sorgo ou milheto e complexo enzimático

Bioavailability and poultry fecal excretion of phosphorus from soybean-based diets supplemented with phytase

Nutrient reduction in rations with phytase for growing pigs

Contact Info

Product

Resources

About