Efeito antioxidante do subproduto da goiaba na dieta de frangos sobre o desempenho e a qualidade de carne

• Main Author: Oliveira, Maryelle Durães de
• Publication Date: 2015
• Format: Master thesis
• Language: por
• Source: Repositório Institucional da UFG
• Download full: http://repositorio.bc.ufg.br/tede/handle/tede/5405
• topic: Aditivos; Avicultura; Fitogênicos; Nutrição; Psidiumguajava; Additives; Nutrition; Poultry; Phytogenic; Psidiumguajava; PRODUCAO ANIMAL::CRIACAO DE ANIMAIS

An experiment was conducted with the objective of evaluating the antioxidant potential by product Guava as nutritional additive in broiler rations aimed at improving intestinal integrity, metabolism of nutrients, the growth performance of animals and the meat quality . 288 female chicks were housed, Cobb500 lineage, with one day old galvanized wire batteries. The experimental design was completely randomized, consisting of four treatments (0%, 0.5%, 1.0% and 1.5% of guava byproduct.) And six replicates of 12 birds / cage each. The diets were isonutritives. The feeding program comprised two phases: pre-starter feed (1 to 7 days old), starter (8 to 21 days of age). The byproduct of guava was added to the basal diet replacing starches. The final weight was measured, the weight gain, feed intake and feed conversion at 21 days of age. The metabolizability of the dry matter and nitrogen was assessed in metabolic assays conducted from 17 to 21 days of age. At 21 days of age were sacrificed for the collection chest, thigh and drumstick to the analysis of colorimetry, pH and reactive substance to thiobarbituric acid (TBARS) and fragments duodenum, jejunum and ileum were collected for preparation of histological slides, and later , measurements of villus height and crypt depth of the intestinal mucosa. The data were submitted to ANOVA and mean test, was adopted α = 0.05%. Guava byproduct did not improve the performance of the birds, and did not harm any of the variables studied. The pH of the colorimetrically and breast and thigh were not influenced by the use of guava byproduct. There was less TBARS value, indicating lipid oxidation of lower thigh meat, the inclusion of 1.5% of byproduct of Guava that was statistically similar to include 0.5 to 1.0%, which shows the characteristic antioxidant guava. There was no influence of guava byproduct levels used to average values of TBARS in the breast meat samples. There was no significant difference (p> 0.05) between treatments for the villi height variables, crypt depth and villus / crypt of the duodenum and jejunum. It is observed significant result for depth variables crypt and villus: crypt. For metabolizing analysis of nutrients in all studied variables obtained significant differences (p> 0.05).