Detoxified castor cake feed for laying hens/ Torta de mamona destoxificada para alimentacao de poedeiras comerciais

This experiment aimed to evaluate the use of detoxified castor cake (DCC) in the diet of laying hens on performance and internal and external quality of eggs. A total of 200 laying hens with 40-50 weeks of age, of Hy-Line W-36[R] line, with 1543[+ or -]34g body weight, were distributed in a complete...

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Veröffentlicht in:Ciência rural 2014-03, Vol.44 (3), p.538
Hauptverfasser: Bueno, Camila Ferreira Delfim, Veloso, Alvaro Luis de Carvalho, Filho, Daniel Emygdio de Faria, Dias, Adelio Nunes, Fernandes, Vanilza, do Couto, Felipe Amorim Paes, Matos, Joao Batista, Jr, Carneiro, Wilson Almeida
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Zusammenfassung:This experiment aimed to evaluate the use of detoxified castor cake (DCC) in the diet of laying hens on performance and internal and external quality of eggs. A total of 200 laying hens with 40-50 weeks of age, of Hy-Line W-36[R] line, with 1543[+ or -]34g body weight, were distributed in a completely randomized design with five treatments (0, 5, 10, 15 and 20% of DCC in diet) with five replicates of eight birds each. The feed intake, egg production, egg weight, egg mass and feed conversion were evaluated. The egg internal quality was evaluated by Haugh unit, percentage of albumen and yolk. The shell quality was evaluated by the thickness, density and specific percentage of eggshell. The performance variables were affected by the inclusion of DCC with a negative linear response to food intake and quadratic for egg production, egg weight, egg mass and feed conversion, with the best levels of 10.5, 5.7, 9.2 and 10.3% respectively. There was no significant effect of DCC inclusion for the variables of egg quality. It is conclude that the DCC can be included in hens diets up to 5.7% to optimize performance and do not alter the internal and external quality of the eggs. Key words: alternative feedstuff, ricin, ricinine, Ricinus communis L. Objetivou-se com este experimento avaliar o efeito da inclusao de torta de mamona destoxificada (TMD) na racao de poedeiras comerciais sobre o desempenho e a qualidade interna e externa dos ovos. Foram utilizadas 200 poedeiras comerciais de 40 a 50 semanas de idade, da linhagem Hy-Line W-36[R], com 1543[+ or -]34g de peso corporal, que foram distribuidas em um delineamento inteiramente casualizado com cinco tratamentos (0, 5, 10, 15 e 20% de torta de mamona destoxificada na racao) com cinco repeticoes de oito aves cada. Foram avaliados o consumo de racao, a producao, o peso e a massa de ovos e a conversao alimentar. A qualidade interna foi avaliada por meio da unidade de Haugh, percentual de albumen e de gema. A qualidade da casca foi medida pela espessura, densidade especifica e percentual de casca. As variaveis de desempenho foram afetadas pela inclusao da TMD com resposta linear negativa para o consumo de racao e quadratica para producao de ovos, peso do ovo, massa do ovo e conversao alimentar, com os melhores niveis de 10,5, 5,7, 9,2 e 10,3% respectivamente. Nao houve efeito significativo da inclusao da TMD para as variaveis de qualidade interna e externa dos ovos. Concluiu-se que a TMD pode ser incluida na racao de poedei
ISSN:0103-8478