Farelo da raiz integral de mandioca em dietas de frangos de corte tipo caipira

The aim this work was to evaluate cassava root meal inclusion levels in diets of free-range broiler chickens on performance, carcass yield, parts yield and functional properties of the meat. 384 male chickens of ISA S757-N strain (naked neck) were distributed in a completely randomized design with f...

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Published in:Archivos de zootecnia Vol. 60; no. 231; pp. 489 - 499
Main Authors: Falco, A.L, Fascina, V.B, Souza, K.M.R, García, A.M.L, Carrijo, A.S, Kiefer, C, Manvailer, G.V
Format: Journal Article
Language:Portuguese
Published: 2011
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Abstract The aim this work was to evaluate cassava root meal inclusion levels in diets of free-range broiler chickens on performance, carcass yield, parts yield and functional properties of the meat. 384 male chickens of ISA S757-N strain (naked neck) were distributed in a completely randomized design with four treatment and four replicates of 24 birds each. The treatments were 0%, 20%, 40% and 60% of FRIM (cassava root meal) in the total ration. The trial period was divided into three rearing phases: initial (1 to 28 days of age), growth (29 to 56 days of age) and fattening (57 to 84 days of age). Final body weight (PF), weight gain (WG), feed intake, feed conversion and liveability were evaluated. At 84 th day, carcass, breast, thigh + upper thigh, wing, back and abdominal fat yield were obtained. Breast meat was used to determi- ne the pH, water holding capacity (CRA) and cooking loss (PPC) too. The shank and breast skin color scores were determined by visual comparison. The results were submitted to analysis of variance, analysis of regression and averages were compared by Tukey’s test to 5% of probability. The analysis of variance found a significant difference between treatments for BW and WG, only at the phase of 1 to 28 days of age. There was a linear increased in BW and WG when the CRM inclusion level increased in feed. There were no significant differences between the treatments for the variables of carcass yield, cuts yield, pH, CRA and PPC. The use of FRIM in the diets of free- range broiler chickens promoted linear reduction in the shank and breast skin colors with the increase of the inclusion level of this ingredient in the feed. The FRIM can be used in the diets of free- range broiler chickens in the proportion of 60% of total ration without resulting in worst performan- ce, carcass yield, cuts yield and functional properties of the meat, however it promotes shank and breast skin no coloration. O objetivo do trabalho foi avaliar níveis de inclusão de farelo da raiz integral de mandioca, em dietas de frangos de corte tipo caipira, sobre o desempenho, os rendimentos de carcaça, de cortes e as propriedades funcionais da carne. Foram distribuídos 384 pintainhos machos da linhagem ISA S757-N (pescoço pelado) em um delineamento inteiramente casualizado com quatro tratamentos e quatro repetições de 24 aves cada. Os tratamentos foram 0%, 20%, 40% e 60% de FRIM (farelo da raiz integral de mandioca) na ração total. O período experimental foi dividido em três fases de criação: inicial (1 a 28 dias de idade), crescimento (29 a 56 dias de idade) e engorda (57 a 84 dias de idade). Foram obtidos o peso corporal final (PF), o ganho de peso (GP), consumo de ração, conversão alimentar e viabilidade. Aos 84 dias foram obtidos os rendimentos de carcaça, peito, coxa+sobrecoxa, asa, dorso gordura abdo- minal e das carnes de peito das aves foram determinados o pH, capacidade de retenção de água (CRA) e perda de peso por cozimento (PPC).Por comparação visual, foram determinados os escores para as cores de pele de canela e de peito. Os resultados foram submetidos à análise de variância, à análise de regressão e as médias foram comparadas pelo teste de Tukey a 5% de probabilidade. A análise de variância detectou diferença significativa entre os tratamentos para PF e GP, somente na fase de 1 a 28 dias de idade. Foi verificado aumento linear para PF e GP à medida que se aumentou o nível de inclusão de FRIM na ração. Não existiram diferenças significa- tivas entre os tratamentos para as variáveis de rendimento de carcaça, de cortes, pH, CRA e PPC. A utilização do FRIM nas dietas de frangos de corte tipo caipira promoveu redução linear na coloração das peles da canela e do peito das aves com o aumento do nível de inclusão desse ingre- diente nas rações. O farelo da raiz integral de mandioca pode ser utilizado nas dietas de frangos de corte tipo caipira na proporção de 60% da ração total sem prejudicar o desempenho, os rendimentos de carcaça, de corte e as propriedades funcionais da carne, no entanto promove descoloração das peles de canela e peito.
AbstractList The aim this work was to evaluate cassava root meal inclusion levels in diets of free-range broiler chickens on performance, carcass yield, parts yield and functional properties of the meat. 384 male chickens of ISA S757-N strain (naked neck) were distributed in a completely randomized design with four treatment and four replicates of 24 birds each. The treatments were 0%, 20%, 40% and 60% of FRIM (cassava root meal) in the total ration. The trial period was divided into three rearing phases: initial (1 to 28 days of age), growth (29 to 56 days of age) and fattening (57 to 84 days of age). Final body weight (PF), weight gain (WG), feed intake, feed conversion and liveability were evaluated. At 84 th day, carcass, breast, thigh + upper thigh, wing, back and abdominal fat yield were obtained. Breast meat was used to determi- ne the pH, water holding capacity (CRA) and cooking loss (PPC) too. The shank and breast skin color scores were determined by visual comparison. The results were submitted to analysis of variance, analysis of regression and averages were compared by Tukey’s test to 5% of probability. The analysis of variance found a significant difference between treatments for BW and WG, only at the phase of 1 to 28 days of age. There was a linear increased in BW and WG when the CRM inclusion level increased in feed. There were no significant differences between the treatments for the variables of carcass yield, cuts yield, pH, CRA and PPC. The use of FRIM in the diets of free- range broiler chickens promoted linear reduction in the shank and breast skin colors with the increase of the inclusion level of this ingredient in the feed. The FRIM can be used in the diets of free- range broiler chickens in the proportion of 60% of total ration without resulting in worst performan- ce, carcass yield, cuts yield and functional properties of the meat, however it promotes shank and breast skin no coloration. O objetivo do trabalho foi avaliar níveis de inclusão de farelo da raiz integral de mandioca, em dietas de frangos de corte tipo caipira, sobre o desempenho, os rendimentos de carcaça, de cortes e as propriedades funcionais da carne. Foram distribuídos 384 pintainhos machos da linhagem ISA S757-N (pescoço pelado) em um delineamento inteiramente casualizado com quatro tratamentos e quatro repetições de 24 aves cada. Os tratamentos foram 0%, 20%, 40% e 60% de FRIM (farelo da raiz integral de mandioca) na ração total. O período experimental foi dividido em três fases de criação: inicial (1 a 28 dias de idade), crescimento (29 a 56 dias de idade) e engorda (57 a 84 dias de idade). Foram obtidos o peso corporal final (PF), o ganho de peso (GP), consumo de ração, conversão alimentar e viabilidade. Aos 84 dias foram obtidos os rendimentos de carcaça, peito, coxa+sobrecoxa, asa, dorso gordura abdo- minal e das carnes de peito das aves foram determinados o pH, capacidade de retenção de água (CRA) e perda de peso por cozimento (PPC).Por comparação visual, foram determinados os escores para as cores de pele de canela e de peito. Os resultados foram submetidos à análise de variância, à análise de regressão e as médias foram comparadas pelo teste de Tukey a 5% de probabilidade. A análise de variância detectou diferença significativa entre os tratamentos para PF e GP, somente na fase de 1 a 28 dias de idade. Foi verificado aumento linear para PF e GP à medida que se aumentou o nível de inclusão de FRIM na ração. Não existiram diferenças significa- tivas entre os tratamentos para as variáveis de rendimento de carcaça, de cortes, pH, CRA e PPC. A utilização do FRIM nas dietas de frangos de corte tipo caipira promoveu redução linear na coloração das peles da canela e do peito das aves com o aumento do nível de inclusão desse ingre- diente nas rações. O farelo da raiz integral de mandioca pode ser utilizado nas dietas de frangos de corte tipo caipira na proporção de 60% da ração total sem prejudicar o desempenho, os rendimentos de carcaça, de corte e as propriedades funcionais da carne, no entanto promove descoloração das peles de canela e peito.
Author García, A.M.L
Carrijo, A.S
Kiefer, C
Falco, A.L
Manvailer, G.V
Fascina, V.B
Souza, K.M.R
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  fullname: García, A.M.L
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  fullname: Carrijo, A.S
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  fullname: Kiefer, C
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  fullname: Manvailer, G.V
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Snippet The aim this work was to evaluate cassava root meal inclusion levels in diets of free-range broiler chickens on performance, carcass yield, parts yield and...
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SubjectTerms Color of skin
Cor de pele
Ganho de peso
Meat functional properties
Naked neck
Pescoço pelado
Propriedades funcionais da carne
Rearing system
Rendimento de carcaça
Sistema de criação
Weight gain
Yield of carcass
Title Farelo da raiz integral de mandioca em dietas de frangos de corte tipo caipira
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