2004
DOI: 10.1590/s0103-84782004000200028
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Diminuição dos níveis de cálcio e fósforo em dietas com farelo de arroz integral e enzimas sobre o desempenho de frangos de corte

Abstract: O objetivo deste trabalho foi estudar o efeito dos níveis crescentes de Farelo de Arroz Integral (FAI) sobre o desempenho de frangos de corte e avaliar a redução dos níveis de cálcio (Ca) e do fósforo (P), quando as dietas foram suplementadas com enzimas exógenas. Foram utilizados 480 pintos (fêmeas) Cobb com 12 dias de idade, distribuídas em 8 tratamentos avaliando 4 níveis de FAI (0%, 10%, 20% e 30%) com e sem enzima, com 3 repetições de 20 aves por tratamento. Nas dietas que continham enzimas, foram diminuí… Show more

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Cited by 5 publications
(6 citation statements)
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“…The former found higher values to feed supplemented with phytase than those with no addition of the enzyme; the later found that intake and weight gain in feed with 0.35% of available phosphorus and 500 PU of phytase/kg feed were similar to the one with no phytase and 45% of available ones. These results are also in consonance with Santos et al (2004) and Namkung & Leeson (1999) who reported that the reduction of calcium and levels of available phosphorus in the diets supplemented with phytase did not harm the performance of the broilers.…”
Section: Resultssupporting
confidence: 90%
“…The former found higher values to feed supplemented with phytase than those with no addition of the enzyme; the later found that intake and weight gain in feed with 0.35% of available phosphorus and 500 PU of phytase/kg feed were similar to the one with no phytase and 45% of available ones. These results are also in consonance with Santos et al (2004) and Namkung & Leeson (1999) who reported that the reduction of calcium and levels of available phosphorus in the diets supplemented with phytase did not harm the performance of the broilers.…”
Section: Resultssupporting
confidence: 90%
“…This agrees with Bonato et al (2004), who, studying feeds with increasing levels of rice bran, observed the occurrence of a decrease in feed intake when birds were fed levels of rice bran addition above 30%. Similar results were found by Santos et al (2004), who observed that as level of inclusion of rice bran in the diet was increased, the feed intake and body weight of birds decreased. Those authors explain that the reduction in bird performance is due to the presence of β-glucans, pentosans and non-starch polysaccharides.…”
Section: Resultssupporting
confidence: 88%
“…Segundo LÓPEZ et al (1978) isto é atribuído ao menor consumo e ao maior conteúdo de fibra bruta, lignocelulose e sílica na ração. SANTOS et al (2001) também não verificaram resultados significativos da enzima sobre a conversão alimentar quando suplementaram dietas à base de farelo de arroz integral para frangos de corte. No entanto, SCHANG (1996), SOTO-SALANOVA (1996) e FIGUEIREDO et al (1998 observaram diferenças (P<0,05) na conversão alimentar pela aplicação de enzimas exógenas em dietas para frangos de corte.…”
Section: Resultsunclassified
“…Concluíram que o nível de inclusão de 19,6% de FAI pode ser considerado o nível ótimo de inclusão na dieta, do ponto de vista de desempenho. SANTOS et al (2001), trabalhando com níveis crescentes de FAI (0, 10, 20 e 30%) e enzimas, observaram que houve um declínio linear no peso corporal da aves, à medida que foi aumentada a inclusão de FAI nas dietas. GRAHAM & INBORR (1993) observaram que a pentosanase é efetiva na degradação das paredes celulares, promovendo assim, maior liberação de nutrientes, o que explica o maior desempenho dos animais.…”
Section: Introductionunclassified