Desempenho de frangos alimentados com feno de maniçoba no semiárido paraibano

Abstract

Desempenho de frangos alimentados com feno de maniçoba no semiárido paraibano 1 RESUMOObjetivou-se analisar o efeito da substituição parcial da ração convencional pelo feno de maniçoba (Manihot glaziovii Muell. Arg.) sobre o desempenho e qualidade de carcaça de frangos de corte tipo caipira. Utilizaramse 192 animais de quatro linhagens diferentes: Máster Griss Plumê, Plymouth Rock Barrada, pescoço pelado Label Rouge e a New Hampshire, com idade inicial de 38 dias. As aves foram distribuídas em delineamento inteiramente casualizado, com três tratamentos (substituição de 0,0; 7,5 e 15,0% da ração basal pelo feno de maniçoba) e quatro repetições, constituídas por 16 aves (dois casais de cada linhagem). Houve diminuição no consumo de proteínas e aumento no consumo de fibras com o aumento de feno na dieta e as aves que consumiram 15,0% de feno tiveram menor ganho de peso (1476,56 g ave -1 ), maior conversão alimentar (2344,19 g), menor rendimento de carcaça (70,74%) e peso absoluto do peito (417,03 g). O uso de até 7,5% de substituição da ração convencional pelo feno de maniçoba não influi no desempenho e na qualidade da carcaça.Palavras-chave: Avicultura alternativa, forrageiras nativas, qualidade da carne. Performance of broilers fed Maniçoba hay in the semiarid region of Paraíba, Brazil ABSTRACTThe objective of this work was to evaluate the effect of the partial replacement of the conventional diet with maniçoba (Manihot glaziovii Muell. Arg.) hay on the performance and carcass quality of free-range broiler chickens. 192 animals, from four different strains were used: Master Griss Plum, Barred Plymouth Rock, Naked Neck Label Rouge and New Hampshire, with initial age of 38 days. The birds were distributed in a completely randomized design with three treatments (replacement of 0.0, 7.5 and 15.0% of the basal diet with maniçoba hay) and four replications consisting of 16 birds (two pairs of each strain). There was a decrease in protein intake and an increase in fiber intake with the increase of hay in the diet, and the birds fed with 15.0% of hay had lower weight gain (1476.56 g bird -1 ), higher food conversion (2344.19 g), lower carcass percentage (70.74%) and absolute breast weight (417.03 g). It was observed that the use of up to 7.5% of ration replacement with maniçoba hay is a viable alternative.

Performance and intestinal parameters of Label Rouge chickens fed on highmoisture corn silage

“…Resultados semelhantes foram encontrados por Furtado et al (2011), que avaliaram o desempenho de frangos alimentados com feno de maniçoba no semiárido paraibano, e Costa et al (2007), que avaliaram o feno de maniçoba em aves caipiras.…”

Cassava foliage in quail feeding

“…By contrast, Furtado et al (2011) observed a reduction in the feed intake, weight gain, and feed conversion in free-range broilers receiving diets with increasing levels of cassava hay. Likewise, Silva et al (2012) did not observe an influence of inclusion of cassava shoots on the performance of Japanese quail, recommending the use of 12% of the by-product in quail diets.…”

“…Similarly, Costa et al (2007) found a linear increase (P < 0.05) in the absolute and relative weights of the gizzard of broilers receiving diets with increasing levels of cassava. Furtado et al (2011) observed an increase in the relative weight of the liver and in the gizzard weight of free-range broilers that received diets with increasing levels of cassava. Results of the economic analysis of the studied variables are shown in Table 4.…”

“…Moreover, the difference found in the relative weight of the cuts is possibly associated with the effect of sex, since unsexed quail were used and the choice of birds for slaughter was based on the average weight of the plot. Costa et al (2007) and Furtado et al (2011) did not find influences of cassava inclusion in the diets of free-range broilers on their carcass yield. Trompiz et al (2010), however, evaluated the inclusion of cassava leaf hay in broiler diets and obtained an increase in drumstick yield and no effects on the absolute weight and yields of the other carcass components.…”

Níveis De Inclusão Da Torta Da Semente De Cupuaçu Na Dieta De Frangos Caipiras Criados Na Amazônia Ocidental

“…Segundo Furtado et al (2011), utilizando feno de maniçoba, que possui maior quantidade de fibra bruta comparada com a TSC, relataram que a quantidade de fibra, do alimento alternativo, pode ter reduzido o consumo de ração dos frangos, ocorrendo também aumento no rendimento de moela. Os autores ainda relatam que até o nível de 7,5% de inclusão do feno, não houve diferença significativa (P>0,05) sobre o rendimento de carcaça dos frangos.…”