EFFECT OF PHYSICAL FORM AND FEED RESTRICTION ON THE PERFORMANCE OF LIGHT LAYING HENS

Authors

  • Isabel Cristina Mello da Silva Departamento de Zootecnia-Universidade Federal do Rio grande do sul
  • Andréa Machado Leal Ribeiro Departamento de Zootecnia-Universidade Federal do Rio grande do sul
  • Alexandre de Mello Kessler Departamento de Zootecnia-Universidade Federal do Rio grande do sul
  • Ronald Alejandro Rocha Claros Departamento de Zootecnia-Universidade Federal do Rio grande do sul

DOI:

https://doi.org/10.5216/cab.v11i2.1518

Keywords:

Poultry Production

Abstract

The experiment aimed at testing the effects of feed physical form (mash vs. pelleted) and feed allowance (ad libitum vs. 10% restriction) in 160 H & N laying hens. Four treatments were applied, with 20 replications of two 26-44-week-old birds each in a completely randomized design, in a 2 x 2 factorial arrangement. Feed intake (FI), body weight gain (BWG), feed conversion (FC), egg production (EP), egg weight (EW) and egg specific gravity (EG) were evaluated. The mash diet provided greater FI in the total period (P<0.0001), whereas pelleted diet showed greater FI only after 42 weeks of age, indicating that birds need to adapt to the new physical form of diet. Egg production, EW, FC, and EG were not different for the two physical forms in the total period. BWG tended to be greater throughout the experiment period for birds eating pelleted diet. Ninety percent of feed restriction from ad libitum intake showed the worst results for all studied variables and none of the physical forms was able to compensate the negative effects of restriction.

KEYWORDS: Egg production, feed restriction, laying hens,  pelleting.

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Author Biographies

Isabel Cristina Mello da Silva, Departamento de Zootecnia-Universidade Federal do Rio grande do sul

Departamento de Zootecnia - Universidade Federal do Rio Grande do Sul

Andréa Machado Leal Ribeiro, Departamento de Zootecnia-Universidade Federal do Rio grande do sul

Departamento de Zootecnia - Universidade Federal do Rio Grande do Sul

Alexandre de Mello Kessler, Departamento de Zootecnia-Universidade Federal do Rio grande do sul

Departamento de Zootecnia - Universidade Federal do Rio Grande do Sul

Ronald Alejandro Rocha Claros, Departamento de Zootecnia-Universidade Federal do Rio grande do sul

Departamento de Zootecnia-Universidade Federal do Rio grande do sul

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Published

2010-06-22

How to Cite

DA SILVA, I. C. M.; RIBEIRO, A. M. L.; KESSLER, A. de M.; CLAROS, R. A. R. EFFECT OF PHYSICAL FORM AND FEED RESTRICTION ON THE PERFORMANCE OF LIGHT LAYING HENS. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 11, n. 2, p. 271–279, 2010. DOI: 10.5216/cab.v11i2.1518. Disponível em: https://revistas.ufg.br/vet/article/view/1518. Acesso em: 18 nov. 2024.

Issue

Vol. 11 No. 2 (2010)

Section

Animal Production

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