Data/hora: 01/06/2024 02:09:16

Provedor de dados: | 96
País: | Brazil
Título: | Effect of using organic microminerals on performance and external quality of eggs of commercial laying hens at the end of laying
Autores: | Maciel,Mônica Patrícia; Saraiva,Edilson Paes; Aguiar,Édina de Fátima; Ribeiro,Pedro Assunção Pimenta; Passos,Débora Pereira; Silva,Jussara Barros.
Data: | 2010-02-01
Ano: | 2010
Palavras-chave: | Egg characteristics; Laying hens; Minerals; Production.
Resumo: | The objective of the present study was to evaluate the effect of using microminerals in organic form on the performance and quality of eggs from commercial laying hens at the end of laying. Four hundred and eighty Hisex strain hens, 72 to 80 weeks of age, were used. A randomized complete design was used, with six replications and 16 birds for each experimental unit. Five diets were evaluated: basal feed supplemented with all microminerals in inorganic form (control); basal feed supplemented with 50% microminerals zinc (Zn) + manganese (Mn) + copper (Cu) in organic form and 50% in inorganic form; basal feed supplemented with 50% zinc in organic form and 50% in inorganic form; basal feed supplemented with 50% manganese in organic form and 50% in inorganic form; and basal feed supplemented with 50% copper in organic form and 50% in inorganic form. There was no effect of diets on egg production, feed intake, food conversion and egg shell percentage and thickness. Birds fed basal feed supplemented only with zinc or manganese in organic form produced eggs with lower specific weight. The use of basal feed supplemented with copper in organic form has minimized egg loss. However, the best results (lower egg loss, higher specific weight and higher weight of eggs) were obtained with the basal feed supplemented with microminerals Zn + Mn + Cu in organic form and, therefore, it is recommended for feeding of commercial laying at the end of laying.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000200017
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982010000200017
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.39 n.2 2010
Fonte: | info:eu-repo/semantics/openAccess