<b>Total solids and egg components yield of white and brown laying hens</b> - DOI: 10.4025/actascianimsci.v29i2.222

  • Douglas Emygdio de Faria USP-Pirassununga
  • Flavio Henrique Araujo Silva USP-Pirassununga
  • Mayra Fernanda Rizzo USP-Pirassununga
  • Márcia Izumi Sakamoto USP-Pirassununga
  • Lucio Francelino Araujo USP-Pirassununga
  • Otto Mack Junqueira Unesp Jaboticabal
DOI: https://doi.org/10.4025/actascianimsci.v29i2.222

Abstract

The experiment was conducted to evaluate the influence of lines, age of the hens and egg size on egg weight, albumen and yolk percentages, and total solid concentrations of the albumen and yolk characteristics. Seven hundred twenty eggs were randomly distributed in a 2 x 3 x 3 factorial scheme: lines of the hens (White - Lohmann LSL and Brown - ISA Brown), age of the hens (25-26, 47-48 and 62-66 weeks), and egg size (medium, large and extra), totalizing 18 treatments with 40 replicates of one egg each. The results showed that eggs produced by the white hens had higher yolk percentage than those produced by the brown hens, irrespective of the age. As the age of hens increased, albumen percentage decreased and yolk percentage increased for both lines. Eggs produced by older hens had smaller albumen and yolk solid concentrations than younger hens. It was concluded that eggs produced by white layers are more indicated for egg-processing industry due to highest yolk yield. Egg size does not influence the concentration of total solids and the age of the hen is a decisive factor of the albumen and yolk yield.

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Author Biography

Douglas Emygdio de Faria, USP-Pirassununga
Possui Graduação em Medicina Veterinária pela Universidade do Estado de Santa Catarina (1981), Mestrado em Zootecnia pela Universidade Estadual Paulista Júlio de Mesquita Filho (1994), Doutorado em Zootecnia pela Universidade Estadual Paulista Júlio de Mesquita Filho (1996) e Pós- Doutorado pela University of Florida em Nutrição de Aves (2000-2001). Atualmente é Professor Titular do Departamento de Zootecnia e Vice-Diretor da Faculdade de Zootecnia e Engenharia de Alimentos (FZEA) da Universidade de São Paulo (USP). Tem experiência na área de Avicultura, com ênfase em Nutrição e Produção, atuando principalmente com poedeiras comerciais e frangos de corte Currículo Lattes
Published
2007-11-13
How to Cite
Faria, D. E. de, Silva, F. H. A., Rizzo, M. F., Sakamoto, M. I., Araujo, L. F., & Junqueira, O. M. (2007). <b>Total solids and egg components yield of white and brown laying hens</b&gt; - DOI: 10.4025/actascianimsci.v29i2.222. Acta Scientiarum. Animal Sciences, 29(2), 173-177. https://doi.org/10.4025/actascianimsci.v29i2.222
Issue
Vol 29 No 2 (2007)
Section
Nonruminant Nutrition

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