Performance and Carcass Yield of Broilers Fed Increasing Levels of Sunflower Cake

Abstract

-This study aimed to evaluate the performance, carcass yield and intestinal morphometry of 1-to 21-day-old broiler chickens fed a diet containing increasing levels of sunflower cake, supplemented with or without an enzyme complex (EC). We used 1200 Cobb 500 birds, which were distributed in a completely randomized design in a 2x5 factorial scheme and five levels of sunflower cake inclusion (0, 5, 10, 15, and 20%) in diets supplemented or not with EC. Each treatment consisted of 5 replicates. Animals were fed the experimental diets from 1 to 21 days of age and from 22 to 42 days all birds received the same feed based on corn and soybean meal. There was no interaction between the level of sunflower cake inclusion and presence of EC. From 1 to 21 days of age, the weight gain, final weight, and feed intake linearly decreased (P<0.05) with increasing sunflower cake inclusion level. At 42 days old, after animals consumed diets based on corn and soybean meal (from 22 to 42 days), the levels provided least 21 days did not influence the performance results. Animals receiving the EC in the first phase showed better results at the end of the experiment (P<0.05). Up to 21 days old, carcass yield decreased, and abdominal fat increased with the sunflower cake inclusion. The addition of EC in the diet improved the thigh, breast and carcass yield. Intestinal morphology after 21 days revealed that the three segments of the intestine had at least one type of change, such as a decrease in villus height and increase in crypt depth, with increased level of sunflower cake in the diet, affecting performance.Keywords: Alternative food. Poultry. Co-Products. Nutrition. Palavras-chaves: Alimento alternativo. Avicultura. Co-produtos. Nutrição. DESEMPENHO E RENDIMENTO DE CARCAÇA DE FRANGOS ALIMENTADOS COM NÍVEIS

Nutritional Composition, Metabolisable Energy and Total Use of Sunflower Seed Cake for Meat Quail

“…These results differ from those presented by Oliveira et al (2012) and Berwanger et al (2017), who observed a quadratic and a linear response of FI, respectively, after SC was included in the diet of broilers. However, those authors did not observe differences in FI between the SC-containing and the control treatments, similar to our findings.…”

“…A distinct result was obtained by Oliveira et al (2012), who used increasing levels of SC up to 18% in the diet of broilers from 20 days of age and observed a linear decrease in FC. Our results corroborate those obtained by Costa Júnior et al (2015) and Berwanger et al (2017), who also did not observe a significant difference between birds fed diets containing SC and those fed the control treatment. Kalmendal et al (2011), however, reported that SC inclusion levels negatively affected the FC of broilers and recommended its inclusion up to 20%.…”

The use of Enzymes in Meat Quail Diets Containing Sunflower Seed Cake

“…The present results differ from those mentioned by Alagawany et al (2015), who did not observe significant effects of enzyme supplementation on the carcass characteristics of broilers fed sunflower meal. Berwanger et al (2017a) observed an increase in the yields of carcass, breast and drumsticks + thighs of broilers from 1 to 21 days of age that were fed enzyme-supplemented diets.…”

“…Additionally, it contains 23.80% ether extract, 0.72% calcium and 0.23% phosphorus (Berwanger et al 2014). However, its use in the feeding of poultry is limited due to the presence of fibre, phytate and chlorogenic acid, which are antinutritional factors that may compromise animal performance (Berwanger et al 2017a).…”

Avaliação bio econômica de frangos de corte alimentados com farelo integral de raízes de mandioca suplementado com carboidrases exógena

“…O custo da alimentação dos animais pode chegar a cerca de 70% do valor total gasto na produção e é afetado pelo preço dos grãos e ingredientes, como a soja, fazendo com que o setor produtivo utilize fontes alternativas de alimentos com custos mais baixos (Berwanger et al, 2017).…”