Levedura (Saccharomyces cerevisiae) spray-dry, autolizada e parede celular de levedura na alimentação de frangos de corte

• Autor(a) principal: Machado, Daniel Augusto Vidiri
• Data de Publicação: 2010
• Outros Autores: Sartori, José Roberto [UNESP], Pezzato, Antonio Celso [UNESP], Fascina, Vitor Barbosa [UNESP], Madeira, Luciene Aparecida [UNESP], Carrijo, Alfredo Sampaio, Cruz, Valquíria Cação da [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.fmvz.unesp.br/rvz/index.php/rvz/article/view/57; http://hdl.handle.net/11449/141037
• topic: Performance; Mannanoligosaccharides; Growth promoter and carcass yield; Desempeño; Mananoligosacarideos; Promotor de crecimiento; Rendimiento; Desempenho; Mananoligossacarídeo; Promotor de crescimento; Rendimento de carcaça

Spray dryer yeast is a feedstuff rich in protein and vitamins, and can be used as a source of alternative nutrients and additives on poultry feeding. This research aimed to evaluate the addition of 0.3% of yeast cell walls and 3.0% of dried yeast and autolysate on growth performance and carcass yield compared with diet absent of additive and supplemented with additive growth promote. Six hundred male one-day-old chicks, Cobb strain, it were distributed in randomized blocks with five treatments (without growth promoter, zinc bacitracin and three yeast sources), with four replicates (30 birds each), totalizing 120 poultry each treatment. Chickens were produced until 42 days of age. The data of performance were obtained on 21 and 42 days. In the end of the experiment were used five chickens for replicate (20 each treatment) which were identified, submitted to eight hours fasting and weighted after carcass yield, cuts and abdominal fat were determined. The results showed no differences on growth performance in the first period (21 days). Diets containing growth promoter, yeast cell walls or autolysate yeast showed the best feed conversion (42 days). Diet containing no additives determined the highest feed consumption. There was no significant difference for others productive performance parameters as well as to carcass yield and cuts. The cell wall of yeast and yeast autolysate may replace antibiotic growth promoters, without affecting the performance and carcass characteristics of broiler chickens.