Performance and egg quality of strains of laying hens after forced molt with different levels of calcium

Authors

  • Milton Albano Jr. Universidade de São Paulo, Faculdade de Medicina Veterinária, São Paulo, SP
  • Ricardo Albuquerque Universidade de São Paulo, Faculdade de Medicina Veterinária, São Paulo, SP
  • César Gonçalvez Lima Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP
  • Esleibe Ghion Universidade de São Paulo, Faculdade de Medicina Veterinária, São Paulo, SP
  • Félix Ribeiro Lima Universidade de São Paulo, Faculdade de Medicina Veterinária, São Paulo, SP
  • Cintra Suzane Dias Morais Universidade de São Paulo, Faculdade de Medicina Veterinária, São Paulo, SP

DOI:

https://doi.org/10.1590/S1413-95962000000400015

Keywords:

Lines, Laying hens, Moult, Calcium, Performance

Abstract

One experiment was conducted to study performance of laying hens of four strains after forced molt: Lohmann White, Babcok, Embrapa-011 (light weight) and Lohmann Brown (semi-heavy weight). Different levels of calcium were applied during the production period (2, 3, 4, 5 and 6%), the experimental design was a random block design with whole 400 birds. Hens were 74 week old at the beginning of the molt phase. The birds fed 2% of calcium showed lower feed consumption and lower egg production. The highest levels of calcium increased the egg shell quality. The color of egg yolk was lower for levels 2 and 6% of calcium. Egg weight, Haugh unit and egg yolk color were related to strain, and the Embrapa-011 showed the lower performance among strains.

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Published

2000-01-01

How to Cite

Albano Jr., M., Albuquerque, R., Lima, C. G., Ghion, E., Lima, F. R., & Morais, C. S. D. (2000). Performance and egg quality of strains of laying hens after forced molt with different levels of calcium. Brazilian Journal of Veterinary Research and Animal Science, 37(4), 334-338. https://doi.org/10.1590/S1413-95962000000400015

Issue

Vol. 37 No. 4 (2000)

Section

ZOOTECHNICS

License

The journal content is authorized under the Creative Commons  BY-NC-SA  license (summary of the license: https://creativecommons.org/licenses/by-nc-sa/4.0 | full text of the license: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode) 

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