Efeitos da suplementação enzimática e da forma física da ração sobre o desempenho e as características de carcaça de frangos de corte

Um experimento foi conduzido para avaliar o efeito da suplementação do complexo enzimático Endopower bÒ, composto de a–galactosidase, galactomanase, xilanase e b–glucanase e da forma física da ração sobre o desempenho e as características de carcaça de frangos de corte. Foram utilizados 1488 frangos de corte machos, distribuídos num delineamento inteiramente casualizado, oito tratamentos e seis repetições. Os tratamentos constituíram–se de rações à base de milho e de farelo de soja, sem adição de enzimas ou com 200 ou 400 g de enzimas por tonelada de ração e duas formas físicas (farelada e peletizada). Dois tratamentos adicionais continham dieta basal farelada com energias do milho e farelo de soja valorados em 2 e 9%, respectivamente e digestibilidade de aminoácidos valorados em 4% para ambos ingredientes, sendo um tratamento sem adição de enzimas e outro com a adição de 200 g por tonelada de ração. O desempenho foi avaliado de 1 a 21 dias e 1 a 42 dias de idade das aves. Houve efeito da suplementação enzimática no consumo de ração, nos dois períodos avaliados (P0,05) dos frangos de corte 1–21 dias de idade.A study was conducted in order to verify the effect of enzyme supplementation (Endopower bÒ, based on de a–galactosidase, galactomanase, xilanase e b–glucanase) and feeding different physical forms of diets on performance and carcass yield of broilers from 1 to 42 dais old. A total of 1488 broilers chickens, 8 treatments, 6 replicates and 31 broilers per experimental unit plot were fed with diets based on corn and soybean, with enzyme supplementation 200 or 400g for ton. and without enzymes supplementation and two physical forms (meal and pelleted ). Two additional basal diets with the energetic values of corn and soybean meal valued in 2 and 9% respectively and digestibilidade of amino acids digestibility valued in 4% by using one treatment with no enzyme supplementation and another one with enzyme supplementation of 200g/ton. Two periods 1–21 and 22–42 days old were evaluated. Reduced feed intake were observed in linear way (P0.05) on the broiler performance from 1 to 21 days old

RELAÇÃO METIONINA E COLINA DIETÉTICA SOBRE O DESEMPENHO DE CODORNAS JAPONESAS (Coturnix coturnix japonica) EM POSTURA

We evaluated the relationship between levels of methionine and choline on the performance of Japanese quails (Coturnix coturnix japonica) at the production stage, using 432 birds at 65 days of age and weighing 155g, in a completely randomized design in 4x2 (methionine x choline) factorial arrangement with six replicates and nine birds per unit. The levels of choline and methionine were 0, 200, 400 and 600 ppm and 0.65 and 0.75%, respectively. We analyzed the following variables: egg production (% / hen / day), egg weight (g), egg mass (g egg / hen/ day), feed conversion (g / g) and food intake (g / d). We observed a significant interaction for egg production (P ≤ 0.01) and egg mass (P ≤ 0.05) with linear effect for 0.65% methionine and inclusion of increasing levels of choline. There was a quadratic effect of choline levels on feed intake, with 0.65% methionine. The use of choline in diets of quail in production only effects bird performance when 0.65% methionine level is used. Supplementation with choline causes an increase in average egg weight regardless of the level of dietary methionine supplementation