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Revista Brasileira de Zootecnia
Article . 2010
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Effect of using organic microminerals on performance and external quality of eggs of commercial laying hens at the end of laying Efeito da utilização de microminerais orgânicos sobre o desempenho e a qualidade externa dos ovos de poedeiras comerciais em final de postura

Authors: Mônica Patrícia Maciel; Edilson Paes Saraiva; Édina de Fátima Aguiar; Pedro Assunção Pimenta Ribeiro; Débora Pereira Passos; Jussara Barros Silva;

Effect of using organic microminerals on performance and external quality of eggs of commercial laying hens at the end of laying Efeito da utilização de microminerais orgânicos sobre o desempenho e a qualidade externa dos ovos de poedeiras comerciais em final de postura

Abstract

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.Um experimento foi realizado com o objetivo de avaliar o efeito da utilização de microminerais na forma orgânica sobre o desempenho e a qualidade dos ovos de poedeiras comerciais em final de postura. Foram utilizadas 480 galinhas da linhagem Hisex com 72 a 80 semanas de idade, distribuídas em delineamento inteiramente casualizado, com 6 repetições e 16 aves por parcela. Foram avaliadas cinco dietas: ração basal suplementada com todos os microminerais na forma inorgânica (controle); ração basal suplementada com 50% dos microminerais zinco (Zn) + manganês (Mn) + cobre (Cu) na forma orgânica e 50% na forma inorgânica; ração basal suplementada com 50% de zinco na forma orgânica e 50% na forma inorgânica; ração basal suplementada com 50% de manganês na forma orgânica e 50% na forma inorgânica e ração basal suplementada com 50% de cobre na forma orgânica e 50% na forma inorgânica. Não houve efeito das dietas sobre a produção de ovos, o consumo de ração, a conversão alimentar, a porcentagem e a espessura de casca. As aves que consumiram a ração basal suplementada apenas com zinco ou manganês na forma orgânica produziram ovos com menor peso específico. A utilização da ração basal suplementada com cobre na forma orgânica proporcionou menor perda de ovos. Porém, os melhores resultados foram obtidos com a ração basal suplementada com os microminerais Zn + Mn + Cu na forma orgânica, pois proporcionou menor perda de ovos, maior peso específico e maior peso dos ovos, sendo, portanto, recomendada para a alimentação de poedeiras comerciais em final de postura.

Keywords

produção, laying hens, características dos ovos, poedeiras, production, minerals, minerais, egg characteristics, SF1-1100, Animal culture

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold