Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zootecnia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000600011 |
Resumo: | Two experiments using Cobb broiler chicks from 8 to 35 days of age were carried out to evaluate the effect of reducing levels of calcium and available phosphorus in diets supplemented with 500 ftu phytase/kg on the performance of the birds, the content of ashes in the tibia, the metabolizable energy of the diet, and the metabolizability of the dry matter and crude protein. It was used 1,404 broiler chicks in the experiment 1 to evaluate feed intake, weight gain, food conversion and percentage of the ashes in the tibia. In the experiment 2, simultaneously carried out with experiment 1, a total of 390 birds were transferred to a metabolism room to determine the metabolizable energy and metabolizability of the dry matter and crude protein. It was used in the two experiments, a complete random design in a 3 × 4 + 1 factorial scheme with three levels of available phosphorus (0.375; 0.325; and 0.275%) and four levels of calcium (0.85; 0.75; 0.65 and 0.55%) in the diets, supplemented with phytase. It was also used a control diet without phytase, based on corn and soybean bran, formulated with 0.425% of available phosphorus and 0.85% of calcium. In the experiment 1, the reduction of levels of calcium and phosphorus did not cause a significant difference on the performance and percentage of bone ashes. The levels of calcium and available phosphorus used in the experiment 2 can be reduced down to 0.65 and 0.325%, respectively, because the effects are similar to those obtained with the currently suggested levels. |
id |
SBZ-1_e6a41d876bd023815209649c19b23956 |
---|---|
oai_identifier_str |
oai:scielo:S1516-35982010000600011 |
network_acronym_str |
SBZ-1 |
network_name_str |
Revista Brasileira de Zootecnia (Online) |
repository_id_str |
|
spelling |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytaseenzymemineralsnutritional requirementTwo experiments using Cobb broiler chicks from 8 to 35 days of age were carried out to evaluate the effect of reducing levels of calcium and available phosphorus in diets supplemented with 500 ftu phytase/kg on the performance of the birds, the content of ashes in the tibia, the metabolizable energy of the diet, and the metabolizability of the dry matter and crude protein. It was used 1,404 broiler chicks in the experiment 1 to evaluate feed intake, weight gain, food conversion and percentage of the ashes in the tibia. In the experiment 2, simultaneously carried out with experiment 1, a total of 390 birds were transferred to a metabolism room to determine the metabolizable energy and metabolizability of the dry matter and crude protein. It was used in the two experiments, a complete random design in a 3 × 4 + 1 factorial scheme with three levels of available phosphorus (0.375; 0.325; and 0.275%) and four levels of calcium (0.85; 0.75; 0.65 and 0.55%) in the diets, supplemented with phytase. It was also used a control diet without phytase, based on corn and soybean bran, formulated with 0.425% of available phosphorus and 0.85% of calcium. In the experiment 1, the reduction of levels of calcium and phosphorus did not cause a significant difference on the performance and percentage of bone ashes. The levels of calcium and available phosphorus used in the experiment 2 can be reduced down to 0.65 and 0.325%, respectively, because the effects are similar to those obtained with the currently suggested levels.Sociedade Brasileira de Zootecnia2010-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000600011Revista Brasileira de Zootecnia v.39 n.6 2010reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982010000600011info:eu-repo/semantics/openAccessCardoso Júnior,AdimarRodrigues,Paulo BorgesBertechini,Antônio GilbertoFreitas,Rilke Tadeu Fonseca deLima,Renato Ribeiro deLima,Gustavo Freire Resendeeng2010-08-31T00:00:00Zoai:scielo:S1516-35982010000600011Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2010-08-31T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
title |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
spellingShingle |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase Cardoso Júnior,Adimar enzyme minerals nutritional requirement |
title_short |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
title_full |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
title_fullStr |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
title_full_unstemmed |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
title_sort |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
author |
Cardoso Júnior,Adimar |
author_facet |
Cardoso Júnior,Adimar Rodrigues,Paulo Borges Bertechini,Antônio Gilberto Freitas,Rilke Tadeu Fonseca de Lima,Renato Ribeiro de Lima,Gustavo Freire Resende |
author_role |
author |
author2 |
Rodrigues,Paulo Borges Bertechini,Antônio Gilberto Freitas,Rilke Tadeu Fonseca de Lima,Renato Ribeiro de Lima,Gustavo Freire Resende |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cardoso Júnior,Adimar Rodrigues,Paulo Borges Bertechini,Antônio Gilberto Freitas,Rilke Tadeu Fonseca de Lima,Renato Ribeiro de Lima,Gustavo Freire Resende |
dc.subject.por.fl_str_mv |
enzyme minerals nutritional requirement |
topic |
enzyme minerals nutritional requirement |
description |
Two experiments using Cobb broiler chicks from 8 to 35 days of age were carried out to evaluate the effect of reducing levels of calcium and available phosphorus in diets supplemented with 500 ftu phytase/kg on the performance of the birds, the content of ashes in the tibia, the metabolizable energy of the diet, and the metabolizability of the dry matter and crude protein. It was used 1,404 broiler chicks in the experiment 1 to evaluate feed intake, weight gain, food conversion and percentage of the ashes in the tibia. In the experiment 2, simultaneously carried out with experiment 1, a total of 390 birds were transferred to a metabolism room to determine the metabolizable energy and metabolizability of the dry matter and crude protein. It was used in the two experiments, a complete random design in a 3 × 4 + 1 factorial scheme with three levels of available phosphorus (0.375; 0.325; and 0.275%) and four levels of calcium (0.85; 0.75; 0.65 and 0.55%) in the diets, supplemented with phytase. It was also used a control diet without phytase, based on corn and soybean bran, formulated with 0.425% of available phosphorus and 0.85% of calcium. In the experiment 1, the reduction of levels of calcium and phosphorus did not cause a significant difference on the performance and percentage of bone ashes. The levels of calcium and available phosphorus used in the experiment 2 can be reduced down to 0.65 and 0.325%, respectively, because the effects are similar to those obtained with the currently suggested levels. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000600011 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000600011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-35982010000600011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zootecnia v.39 n.6 2010 reponame:Revista Brasileira de Zootecnia (Online) instname:Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zootecnia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zootecnia (Online) |
collection |
Revista Brasileira de Zootecnia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ) |
repository.mail.fl_str_mv |
||bz@sbz.org.br|| secretariarbz@sbz.org.br |
_version_ |
1750318146110095360 |