Phosphorus and phytase levels for layer hens
<p>The objective of this research was to evaluate the performance and bone quality of laying hens after peak production fed diets containing phosphorus levels and phytase. An experiment was conducted with 384 Hy-line distributed in a completely randomized in a factorial 4 x 3 with 4 levels of...
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| Format: | Article |
| Language: | English |
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Instituto de Zootecnia
2013-02-01
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| Series: | Boletim de Indústria Animal |
| Subjects: | |
| Online Access: | http://revistas.bvs-vet.org.br/bia/article/view/7135 |
| _version_ | 1828316350845550592 |
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| author | Juliana Cristina Ramos Rezende Antonio Carlos de Laurentiz Rosemeire da Silva Filardi Vitor Barbosa Fascina Daniella Aparecida Berto Sérgio Turra Sobrane Filho |
| author_facet | Juliana Cristina Ramos Rezende Antonio Carlos de Laurentiz Rosemeire da Silva Filardi Vitor Barbosa Fascina Daniella Aparecida Berto Sérgio Turra Sobrane Filho |
| author_sort | Juliana Cristina Ramos Rezende |
| collection | DOAJ |
| description | <p>The objective of this research was to evaluate the performance and bone quality of laying hens after peak production fed diets containing phosphorus levels and phytase. An experiment was conducted with 384 Hy-line distributed in a completely randomized in a factorial 4 x 3 with 4 levels of available phosphorus and 3 levels of phytase. The experimental period was divided into four periods of 28 days, at the end of each cycle were determined experimental feed intake, egg production, egg weight, feed conversion, mortality, and average egg weight, shell thickness, Haugh units and specific gravity. At the end of the experimental period were determined amounts of calcium and phosphorus excreted by the method of total excreta collection and a fowl per experimental unit was sacrificed for collection of bones and evaluation of width, length and level of robustness from femur and tibia. There was interaction between phosphorus levels and phytase on feed intake, feed conversion and percentage of posture. For inclusion levels of phytase all egg quality variables showed no significant differences. The treatments did not affect bone characteristics of laying hens.</p> |
| first_indexed | 2024-04-13T17:13:17Z |
| format | Article |
| id | doaj.art-d767bb0d3efc442b8142948538973424 |
| institution | Directory Open Access Journal |
| issn | 1981-4100 |
| language | English |
| last_indexed | 2024-04-13T17:13:17Z |
| publishDate | 2013-02-01 |
| publisher | Instituto de Zootecnia |
| record_format | Article |
| series | Boletim de Indústria Animal |
| spelling | doaj.art-d767bb0d3efc442b81429485389734242022-12-22T02:38:13ZengInstituto de ZootecniaBoletim de Indústria Animal1981-41002013-02-0170214915710.17523/bia.v70n2p1496341Phosphorus and phytase levels for layer hensJuliana Cristina Ramos Rezende0Antonio Carlos de Laurentiz1Rosemeire da Silva Filardi2Vitor Barbosa Fascina3Daniella Aparecida Berto4Sérgio Turra Sobrane Filho5Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SPUniversidade Estadual Paulista, Faculdade de Engenharia de Ilha Solteira, Departamento de Biologia e Zootecnia, Ilha Solteira, SPUniversidade Estadual Paulista, Faculdade de Engenharia de Ilha Solteira, Departamento de Biologia e Zootecnia, Ilha Solteira, SPUniversidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SPUniversidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SPUniversidade Estadual Paulista, SP<p>The objective of this research was to evaluate the performance and bone quality of laying hens after peak production fed diets containing phosphorus levels and phytase. An experiment was conducted with 384 Hy-line distributed in a completely randomized in a factorial 4 x 3 with 4 levels of available phosphorus and 3 levels of phytase. The experimental period was divided into four periods of 28 days, at the end of each cycle were determined experimental feed intake, egg production, egg weight, feed conversion, mortality, and average egg weight, shell thickness, Haugh units and specific gravity. At the end of the experimental period were determined amounts of calcium and phosphorus excreted by the method of total excreta collection and a fowl per experimental unit was sacrificed for collection of bones and evaluation of width, length and level of robustness from femur and tibia. There was interaction between phosphorus levels and phytase on feed intake, feed conversion and percentage of posture. For inclusion levels of phytase all egg quality variables showed no significant differences. The treatments did not affect bone characteristics of laying hens.</p>http://revistas.bvs-vet.org.br/bia/article/view/7135cálciocaracterísticas ósseasdesempenhofitatoqualidade de ovos |
| spellingShingle | Juliana Cristina Ramos Rezende Antonio Carlos de Laurentiz Rosemeire da Silva Filardi Vitor Barbosa Fascina Daniella Aparecida Berto Sérgio Turra Sobrane Filho Phosphorus and phytase levels for layer hens Boletim de Indústria Animal cálcio características ósseas desempenho fitato qualidade de ovos |
| title | Phosphorus and phytase levels for layer hens |
| title_full | Phosphorus and phytase levels for layer hens |
| title_fullStr | Phosphorus and phytase levels for layer hens |
| title_full_unstemmed | Phosphorus and phytase levels for layer hens |
| title_short | Phosphorus and phytase levels for layer hens |
| title_sort | phosphorus and phytase levels for layer hens |
| topic | cálcio características ósseas desempenho fitato qualidade de ovos |
| url | http://revistas.bvs-vet.org.br/bia/article/view/7135 |
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