Production Indicators and Levels of Corticosterone in Pullets Treated with Beak-Trimming Protocols
ABSTRACT The aim of this study was to compare the effects of beak trimming by hot blade or infrared radiation on production indicators and plasma levels of corticosterone in pullets. During the rearing phase, an entirely random delineation was used a 2 x 3 factorial design (two different techniques...
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| Format: | Article |
| Language: | English |
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Fundação APINCO de Ciência e Tecnologia Avícolas
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| Series: | Brazilian Journal of Poultry Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100063&lng=en&tlng=en |
| _version_ | 1828815782593691648 |
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| author | JA Vieira Filho EA Garcia E Oba TA Santos AB Molino AP Silva K Pelícia ICLA Paz |
| author_facet | JA Vieira Filho EA Garcia E Oba TA Santos AB Molino AP Silva K Pelícia ICLA Paz |
| author_sort | JA Vieira Filho |
| collection | DOAJ |
| description | ABSTRACT The aim of this study was to compare the effects of beak trimming by hot blade or infrared radiation on production indicators and plasma levels of corticosterone in pullets. During the rearing phase, an entirely random delineation was used a 2 x 3 factorial design (two different techniques for beak trimming x 3 strains), a total of six treatments with six repetitions of 20 hens. In the growing phase, the previous treatments were divided into 12, with eight repetitions with seven hens. These treatments were then distributed in a factorial design of 2 x 3 x 2 (two methodologies for beak trimming during rearing phase x three strains x with or without beak trimming at ten weeks of age). In the rearing phase the birds treated by infrared radiation had a lower total consumption and a longer beak length. In the growing phase, the execution of beak trimming at ten weeks of age, led to a lower total consumption and a lower body weight, but a better food conversion, when compared to those hens that did not have beak treatment. Beak trimming at ten weeks did not change the plasmatic levels of corticosterone. |
| first_indexed | 2024-12-12T10:50:11Z |
| format | Article |
| id | doaj.art-dc3e4d066a7d48fba25c7a9ab294dcc2 |
| institution | Directory Open Access Journal |
| issn | 1806-9061 |
| language | English |
| last_indexed | 2024-12-12T10:50:11Z |
| publisher | Fundação APINCO de Ciência e Tecnologia Avícolas |
| record_format | Article |
| series | Brazilian Journal of Poultry Science |
| spelling | doaj.art-dc3e4d066a7d48fba25c7a9ab294dcc22022-12-22T00:26:47ZengFundação APINCO de Ciência e Tecnologia AvícolasBrazilian Journal of Poultry Science1806-9061201637010.1590/1806-9061-2017-0560S1516-635X2018000100063Production Indicators and Levels of Corticosterone in Pullets Treated with Beak-Trimming ProtocolsJA Vieira FilhoEA GarciaE ObaTA SantosAB MolinoAP SilvaK PelíciaICLA PazABSTRACT The aim of this study was to compare the effects of beak trimming by hot blade or infrared radiation on production indicators and plasma levels of corticosterone in pullets. During the rearing phase, an entirely random delineation was used a 2 x 3 factorial design (two different techniques for beak trimming x 3 strains), a total of six treatments with six repetitions of 20 hens. In the growing phase, the previous treatments were divided into 12, with eight repetitions with seven hens. These treatments were then distributed in a factorial design of 2 x 3 x 2 (two methodologies for beak trimming during rearing phase x three strains x with or without beak trimming at ten weeks of age). In the rearing phase the birds treated by infrared radiation had a lower total consumption and a longer beak length. In the growing phase, the execution of beak trimming at ten weeks of age, led to a lower total consumption and a lower body weight, but a better food conversion, when compared to those hens that did not have beak treatment. Beak trimming at ten weeks did not change the plasmatic levels of corticosterone.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100063&lng=en&tlng=enBeak treatmentinfrared radiationpoultry productionstresswelfare. |
| spellingShingle | JA Vieira Filho EA Garcia E Oba TA Santos AB Molino AP Silva K Pelícia ICLA Paz Production Indicators and Levels of Corticosterone in Pullets Treated with Beak-Trimming Protocols Brazilian Journal of Poultry Science Beak treatment infrared radiation poultry production stress welfare. |
| title | Production Indicators and Levels of Corticosterone in Pullets Treated with Beak-Trimming Protocols |
| title_full | Production Indicators and Levels of Corticosterone in Pullets Treated with Beak-Trimming Protocols |
| title_fullStr | Production Indicators and Levels of Corticosterone in Pullets Treated with Beak-Trimming Protocols |
| title_full_unstemmed | Production Indicators and Levels of Corticosterone in Pullets Treated with Beak-Trimming Protocols |
| title_short | Production Indicators and Levels of Corticosterone in Pullets Treated with Beak-Trimming Protocols |
| title_sort | production indicators and levels of corticosterone in pullets treated with beak trimming protocols |
| topic | Beak treatment infrared radiation poultry production stress welfare. |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100063&lng=en&tlng=en |
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