| Full text | |
| Author(s): |
Javer Alves Vieira Filho
[1]
;
Edivaldo Antônio Garcia
[2]
;
Eunice Oba
[3]
;
Tiago Antônio dos Santos
[4]
;
Anderson Pontes Silva
[5]
;
Andréa Britto Molino
[6]
;
Ibiara Correia de Lima Almeida Paz
[7]
;
Grace Alessandra de Araújo Baldo
[8]
Total Authors: 8
|
| Affiliation: | [1] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Produção Animal - Brasil
[2] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Produção Animal - Brasil
[3] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Reprodução Animal e Radiologia Veterinária - Brasil
[4] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Produção Animal - Brasil
[5] Lohmann do Brasil - Brasil
[6] Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Nutrição e Produção Animal - Brasil
[7] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Produção Animal - Brasil
[8] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Produção Animal - Brasil
Total Affiliations: 8
|
| Document type: | Journal article |
| Source: | Pesquisa Agropecuária Brasileira; v. 51, n. 6, p. 759-765, 2016-06-00. |
| Abstract | |
Abstract: The objective of this work was to evaluate the effect of beak trimming, by hot blade or infrared radiation, on the production indicators and egg quality of three laying hen strains in the first week of life, and whether a second beak trimming would be necessary in the tenth week. Birds were distributed in a completely randomized design with 2x3x2 factorial arrangement (first beak trimming by means of infrared radiation or hot blade x the strains Lohmann LSL, Hy-line W-36, and Lohmann Brown x with or without beak trimming at the tenth week of age), totaling twelve treatments with six replicates. Beak trimming by infrared radiation, in the first week of life, provides the same production results and egg quality as the conventional method by hot blade. There were no deaths from cannibalism for birds of the three strains that were not subjected to the second beak trimming; however, a decrease of 8% viability was observed in birds at the 63th week of age. (AU) | |
| FAPESP's process: | 13/07312-8 - Methods of beak trimming: development and performance production of light and semi heavy layers |
| Grantee: | Javer Alves Vieira Filho |
| Support Opportunities: | Scholarships in Brazil - Doctorate |