Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheep

Detalhes bibliográficos
Autor(a) principal: Maurício Cavalcante Salviano, Luiz
Data de Publicação: 1998
Outros Autores: Miriam Silber Schmidt Vitti, Dorinha
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/4852
Resumo: Eighteen crossbred male sheep (mean weight 34.4 ± 3.1 kg) were used to study the effect of three Ca:P ratios (0.75:1.0; 1.5:1.0 e 3.0:1.0). Sheep were kept in metabolic crates and received diets containing Cynodon dactylon hay (650 g), cassava root meal (150 g), urea (15 g) and trace-mineralized salt. At the 22nd day each animal received, through the jugular vein, an injection of 7.4 MBq of radiophosphorus (32P). Blood, feces and urine samples were collected for 8 days. Total P excretion (83.92 mg/kg LW) and endogenous fecal P (51.36 mg/kg LW) were not significantly different (P>0.05). P absorbed and coefficient of absorption for the (0.75:1.0; 1.5:1.0 e 3.0:1.0) treatments were 49.2, 62.7 and 55.2 mg/kg LW, and 0.56, 0.70 and 0.63, with significant difference (P<0.05) between 1.5:1.0 and 0.75:1.0 for both parameters. Positive correlation was observed between P absorbed and endogenous fecal P (r=0.82, P<0.001). Ca:P ratio of 1.5:1 seems to be the most indicate as it enhanced better P absorption indices than Ca:P ratio of 0.75:1, and tended to be better than Ca:P ratio of 3:1.
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spelling Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheepInfluência da proporção de cálcio e fósforo na dieta, nas perdas endógenas e na absorção de fósforo em ovinosradioactive phosphorus; endogenous phophorus; phosphorus metabolismfósforo radioativo; metabolismo do fósforo; fósforo endógenoEighteen crossbred male sheep (mean weight 34.4 ± 3.1 kg) were used to study the effect of three Ca:P ratios (0.75:1.0; 1.5:1.0 e 3.0:1.0). Sheep were kept in metabolic crates and received diets containing Cynodon dactylon hay (650 g), cassava root meal (150 g), urea (15 g) and trace-mineralized salt. At the 22nd day each animal received, through the jugular vein, an injection of 7.4 MBq of radiophosphorus (32P). Blood, feces and urine samples were collected for 8 days. Total P excretion (83.92 mg/kg LW) and endogenous fecal P (51.36 mg/kg LW) were not significantly different (P>0.05). P absorbed and coefficient of absorption for the (0.75:1.0; 1.5:1.0 e 3.0:1.0) treatments were 49.2, 62.7 and 55.2 mg/kg LW, and 0.56, 0.70 and 0.63, with significant difference (P<0.05) between 1.5:1.0 and 0.75:1.0 for both parameters. Positive correlation was observed between P absorbed and endogenous fecal P (r=0.82, P<0.001). Ca:P ratio of 1.5:1 seems to be the most indicate as it enhanced better P absorption indices than Ca:P ratio of 0.75:1, and tended to be better than Ca:P ratio of 3:1.Dezoito ovinos machos, peso médio de 34,4 kg, divididos em dois blocos, foram utilizados para estudo do efeito de três proporções Ca:P (0,75:1,0, 1,5:1,0 e 3,0:1,0) na dieta sobre as perdas endógenas e a absorção real de fósforo (P). Os ovinos foram mantidos em gaiolas de metabolismo e receberam dietas contendo: feno de capim-coastcross (650 g), farinha de mandioca (150 g), uréia (15 g) e mistura de microminerais. No 22o dia de cada período experimental, cada animal recebeu, na veia jugular, uma injeção de 7,4 MBq de 32P. Amostras de sangue, fezes e urina foram coletadas por oito dias, para determinação das perdas endógenas de P. O P endógeno fecal (51:36 mg/kg PV) e o P total excretado (83,92 mg/kg PV) não foram significativamente diferentes (P>0,05). A absorção real de P e o coeficiente de absorção referente aos tratamentos 0,75:1,0, 1,5:1,0 e 3,0:1,0 foram de 49,2, 62,7 e 55,2 mg/kg PV, e de 0,56, 0,70 e 0,63, com diferença significativa (P<0,05) entre 1,5:1,0 e 0,75:1,0 em ambos os parâmetros. Foi observada correlação entre o P absorvido e o P endógeno fecal (r=0,82; P<0,001). A proporção Ca:P de 1,5:1,0 propiciou melhor absorção de P do que a de 0,75:1,0, e, apesar de não ser significativamente melhor que a de 3,0:1,0, consumiu menos carbonato de cálcio.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMaurício Cavalcante Salviano, LuizMiriam Silber Schmidt Vitti, Dorinha1998-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4852Pesquisa Agropecuaria Brasileira; v.33, n.3, mar. 1998; 349-355Pesquisa Agropecuária Brasileira; v.33, n.3, mar. 1998; 349-3551678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4852/6983info:eu-repo/semantics/openAccess2014-11-20T17:02:03Zoai:ojs.seer.sct.embrapa.br:article/4852Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-11-20T17:02:03Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheep
Influência da proporção de cálcio e fósforo na dieta, nas perdas endógenas e na absorção de fósforo em ovinos
title Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheep
spellingShingle Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheep
Maurício Cavalcante Salviano, Luiz
radioactive phosphorus; endogenous phophorus; phosphorus metabolism
fósforo radioativo; metabolismo do fósforo; fósforo endógeno
title_short Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheep
title_full Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheep
title_fullStr Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheep
title_full_unstemmed Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheep
title_sort Influence of calcium and phosphorus ratio in diet, on endogenous losses and absorption of phosphorus by sheep
author Maurício Cavalcante Salviano, Luiz
author_facet Maurício Cavalcante Salviano, Luiz
Miriam Silber Schmidt Vitti, Dorinha
author_role author
author2 Miriam Silber Schmidt Vitti, Dorinha
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Maurício Cavalcante Salviano, Luiz
Miriam Silber Schmidt Vitti, Dorinha
dc.subject.por.fl_str_mv radioactive phosphorus; endogenous phophorus; phosphorus metabolism
fósforo radioativo; metabolismo do fósforo; fósforo endógeno
topic radioactive phosphorus; endogenous phophorus; phosphorus metabolism
fósforo radioativo; metabolismo do fósforo; fósforo endógeno
description Eighteen crossbred male sheep (mean weight 34.4 ± 3.1 kg) were used to study the effect of three Ca:P ratios (0.75:1.0; 1.5:1.0 e 3.0:1.0). Sheep were kept in metabolic crates and received diets containing Cynodon dactylon hay (650 g), cassava root meal (150 g), urea (15 g) and trace-mineralized salt. At the 22nd day each animal received, through the jugular vein, an injection of 7.4 MBq of radiophosphorus (32P). Blood, feces and urine samples were collected for 8 days. Total P excretion (83.92 mg/kg LW) and endogenous fecal P (51.36 mg/kg LW) were not significantly different (P>0.05). P absorbed and coefficient of absorption for the (0.75:1.0; 1.5:1.0 e 3.0:1.0) treatments were 49.2, 62.7 and 55.2 mg/kg LW, and 0.56, 0.70 and 0.63, with significant difference (P<0.05) between 1.5:1.0 and 0.75:1.0 for both parameters. Positive correlation was observed between P absorbed and endogenous fecal P (r=0.82, P<0.001). Ca:P ratio of 1.5:1 seems to be the most indicate as it enhanced better P absorption indices than Ca:P ratio of 0.75:1, and tended to be better than Ca:P ratio of 3:1.
publishDate 1998
dc.date.none.fl_str_mv 1998-03-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/4852
url https://seer.sct.embrapa.br/index.php/pab/article/view/4852
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/4852/6983
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.33, n.3, mar. 1998; 349-355
Pesquisa Agropecuária Brasileira; v.33, n.3, mar. 1998; 349-355
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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