Requirement of available phosphorus by female broiler chickens keeping the calcium:available phosphorus ratio at 2:1
Four trials were conducted to determine the requirements of available phosphorus (aP) of female broiler chicks from 1 to 10 (exp.1), 11 to 21 (exp.2), 22 to 33 (exp.3), and from 34 to 46 (exp.4) days of age, keeping the calcium:available phosphorus ratio equal to 2:1. In each trial, 480 Cobb broilers were randomly allotted in a completely randomized design with 6 treatments, 8 replicates and 10 birds per pen. The levels of aP ranged from 2.0 to 5.5 g/kg (Exp. 1), 1.9 to 5.4g/kg (exp. 2), 1.8 to 5.3 g/kg (exp. 3) and 1.7 to 5.2 g/kg of diet (exp. 4), in increments of 0.7 g/kg. The experimental diets were formulated using corn and soybean meal and the available phosphorus was considered 33% of total phosphorus. The characteristics evaluated were body weight gain, feed intake, feed conversion ratio and bone parameters. For female broiler chicks from 1 to 10; 11 to 21; 22 to 33; and from 34 to 46 days of age, the levels of available phosphorus and calcium recommended are 4.59 and 9.18; 3.88 and 7.76; 3.58 and 7.16; and 2.56 and 5.12 g/kg of diet, respectively.
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Sociedade Brasileira de Zootecnia
2012
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oai:scielo:S1516-359820120011000052012-11-20Requirement of available phosphorus by female broiler chickens keeping the calcium:available phosphorus ratio at 2:1Mello,Heloisa Helena de CarvalhoGomes,Paulo CezarRostagno,Horacio SantiagoAlbino,Luiz Fernando TeixeiraOliveira,Rita Flávia Miranda deRocha,Tatiana Cristina daRibeiro,Cleverson Luís Nascimento chicken minerals performance ration tibia Four trials were conducted to determine the requirements of available phosphorus (aP) of female broiler chicks from 1 to 10 (exp.1), 11 to 21 (exp.2), 22 to 33 (exp.3), and from 34 to 46 (exp.4) days of age, keeping the calcium:available phosphorus ratio equal to 2:1. In each trial, 480 Cobb broilers were randomly allotted in a completely randomized design with 6 treatments, 8 replicates and 10 birds per pen. The levels of aP ranged from 2.0 to 5.5 g/kg (Exp. 1), 1.9 to 5.4g/kg (exp. 2), 1.8 to 5.3 g/kg (exp. 3) and 1.7 to 5.2 g/kg of diet (exp. 4), in increments of 0.7 g/kg. The experimental diets were formulated using corn and soybean meal and the available phosphorus was considered 33% of total phosphorus. The characteristics evaluated were body weight gain, feed intake, feed conversion ratio and bone parameters. For female broiler chicks from 1 to 10; 11 to 21; 22 to 33; and from 34 to 46 days of age, the levels of available phosphorus and calcium recommended are 4.59 and 9.18; 3.88 and 7.76; 3.58 and 7.16; and 2.56 and 5.12 g/kg of diet, respectively.info:eu-repo/semantics/openAccessSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia v.41 n.11 20122012-11-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001100005en10.1590/S1516-35982012001100005 |
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Mello,Heloisa Helena de Carvalho Gomes,Paulo Cezar Rostagno,Horacio Santiago Albino,Luiz Fernando Teixeira Oliveira,Rita Flávia Miranda de Rocha,Tatiana Cristina da Ribeiro,Cleverson Luís Nascimento |
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Mello,Heloisa Helena de Carvalho Gomes,Paulo Cezar Rostagno,Horacio Santiago Albino,Luiz Fernando Teixeira Oliveira,Rita Flávia Miranda de Rocha,Tatiana Cristina da Ribeiro,Cleverson Luís Nascimento Requirement of available phosphorus by female broiler chickens keeping the calcium:available phosphorus ratio at 2:1 |
author_facet |
Mello,Heloisa Helena de Carvalho Gomes,Paulo Cezar Rostagno,Horacio Santiago Albino,Luiz Fernando Teixeira Oliveira,Rita Flávia Miranda de Rocha,Tatiana Cristina da Ribeiro,Cleverson Luís Nascimento |
author_sort |
Mello,Heloisa Helena de Carvalho |
title |
Requirement of available phosphorus by female broiler chickens keeping the calcium:available phosphorus ratio at 2:1 |
title_short |
Requirement of available phosphorus by female broiler chickens keeping the calcium:available phosphorus ratio at 2:1 |
title_full |
Requirement of available phosphorus by female broiler chickens keeping the calcium:available phosphorus ratio at 2:1 |
title_fullStr |
Requirement of available phosphorus by female broiler chickens keeping the calcium:available phosphorus ratio at 2:1 |
title_full_unstemmed |
Requirement of available phosphorus by female broiler chickens keeping the calcium:available phosphorus ratio at 2:1 |
title_sort |
requirement of available phosphorus by female broiler chickens keeping the calcium:available phosphorus ratio at 2:1 |
description |
Four trials were conducted to determine the requirements of available phosphorus (aP) of female broiler chicks from 1 to 10 (exp.1), 11 to 21 (exp.2), 22 to 33 (exp.3), and from 34 to 46 (exp.4) days of age, keeping the calcium:available phosphorus ratio equal to 2:1. In each trial, 480 Cobb broilers were randomly allotted in a completely randomized design with 6 treatments, 8 replicates and 10 birds per pen. The levels of aP ranged from 2.0 to 5.5 g/kg (Exp. 1), 1.9 to 5.4g/kg (exp. 2), 1.8 to 5.3 g/kg (exp. 3) and 1.7 to 5.2 g/kg of diet (exp. 4), in increments of 0.7 g/kg. The experimental diets were formulated using corn and soybean meal and the available phosphorus was considered 33% of total phosphorus. The characteristics evaluated were body weight gain, feed intake, feed conversion ratio and bone parameters. For female broiler chicks from 1 to 10; 11 to 21; 22 to 33; and from 34 to 46 days of age, the levels of available phosphorus and calcium recommended are 4.59 and 9.18; 3.88 and 7.76; 3.58 and 7.16; and 2.56 and 5.12 g/kg of diet, respectively. |
publisher |
Sociedade Brasileira de Zootecnia |
publishDate |
2012 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001100005 |
work_keys_str_mv |
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