Fluxo do fósforo de diferentes fontes de fosfatos em bovinos

Vitti, Dorinha Miriam Silber Schmidt; Lopes, João Batista; Filho, José Carlos Silva Camargo; Abdalla, Adibe Luiz; Haddad, Maryam

doi:10.1590/s0102-09352001000200016

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Vitti et al (2000) elaborated a model to evaluate P kinetics in goats. The P metabolism in cattle has been studied using radioisotopes by Silva Filho et al (2000) and Vitti et al (2001). This study aimed to evaluate P kinetics in calves infected with a single dose (45 000 infective larvae) of Cooperia punctata, using isotopic dilution and modelling techniques.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Kinetics in Calves Submitted to Single Infection with Cooperia punctata

Louvandini

Rodrigues

Gennari

et al. 2009

JAS

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The research is financed by and CNPq for the research scholarships of the authors. AbstractThe aim of this study was to evaluate phosphorus (P) kinetics in calves submitted to a single acute infection of Cooperia punctata, using isotopic dilution and modelling techniques. Ten Holstein calves were used, with a mean live weight of 66.05 ± 0.30 kg. Of these, five received a single dose of 45 000 infectant (L 3 ) C. punctata larvae and the other five were maintained in a control group without infection. Twenty one days after the infection, all animals received 29.6 MBq 32 P by intravenous injection to evaluate P kinetics. Weight gain, feed consumption and excretion in the faeces and urine were monitored and blood was collected for seven days. After the collection period, all animals were slaughtered, Journal of Agricultural ScienceDecember, 2009 59 tissues collected and worms counted. The number of eggs per gram of faeces (EPG) reached 3 342 ± 194 and the number of adult worms was 12 992 ± 1 470. Final live weight, mean daily live weight gain, level of P in the plasma and its retention in control calves were higher and P excretion in the faeces less than in the infected calves. There was a negative P balance in both the control and infected calves for soft tissues and bone. A single infection by C. punctata negatively influenced calf performance and P kinetics, leading to lower retention of the mineral.

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Section: Introductionmentioning

confidence: 99%

Phosphorus Kinetics in Calves Submitted to Single Infection with Cooperia punctata

Louvandini

Rodrigues

Gennari

et al. 2009

JAS

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Section: Introductionmentioning

confidence: 99%

Journal of Agricultural Science, Vol. 1, No. 2, December 2009, all in one file

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2009

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Metabolismo do fósforo em eqüinos. 1. Avaliação dietética de diferentes fontes de fósforo

Lopes

Furtado

Vitti³

et al. 2003

R. Bras. Zootec.

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RESUMO -Objetivou-se estudar o fluxo de fósforo (P) entre os compartimentos fisiológicos ou anatômicos de eqüinos e avaliar a absorção e disponibilidade desse mineral com o P proveniente de diferentes fontes de fosfato: Tapira, Patos de Minas, bicálcico e farinha de ossos, utilizando-se o modelo, determinístico e compartimental, adaptado de Aubert e Milhaud. Nesse modelo, o trato gastrintestinal, os ossos e tecidos moles, em conjunto, representaram os compartimentos, em fluxo bidirecional com o sangue. Foram utilizadas informações sobre estudo de metabolismo e cinética do P em tecidos obtidas pela técnica da diluição isotópica. Constatou-se que o P excretado nas fezes e na urina e o fluxo bidirecional de P dos tecidos moles e ossos para o sangue não são influenciados pelo tipo de fonte de fósforo, quando os fosfatos Tapira, Patos de Minas, bicálcico ou farinha de ossos são adicionados às dietas de eqüinos; o fluxo de P do trato digestivo para o sangue depende do tipo de fosfato existente nas dietas, sendo maior nos fosfatos bicálcico, Patos de Minas e farinha de ossos; a disponibilidade biológica e a absorção real do fósforo nos fosfatos Patos de Minas e da farinha de ossos em dietas de eqüinos são similares à do fosfato bicálcico, constituindo esses fosfatos em fontes alternativas para suplementação dietética de fósforo em eqüinos.Palavras-chave: fosfatos, modelo, potro, radiofósforo Phosphorus Metabolism in Horse. 1. Dietary Evaluation of DifferentPhosphates Sources ABSTRACT -The experiment was designed to study the phosphorus (P) flow between the physiologic or anatomical compartments of horses and to evaluate the P absorption and availability in horse diets. The experimental treatments were constituted by different sources of phosphate: "Tapira", "Patos de Minas", dicalcium and bone flour. The model, deterministic and compartmental, was adapted from Aubert and Milhaud model, in which the digestive tract and the bone and soft tissues represented the compartments in bi-directional flow with the blood. The informations on metabolism and kinetic of P in tissues obtained by the isotopic dilution technique were used. It was concluded that: the fecal and urinary P and the bi-directional flow from soft tissues and bone to blood are not influenced by the kind of phosphorus sources, when the "Tapira", "Patos de Minas" and dicalcium phosphate or bone meal are added to the horse diets; the P flow from gut to blood depends on the kind of phosphate used in the diets, being the values largest observed in the dicalcium phosphate, "Patos de Minas" phosphate and bone meal; the P absorption and availability of the phosphate "Patos de Minas" and meal bones in horses diets are similar to the one of the dicalcium phosphate, constituting those phosphates in alternative sources for supplemental dietary P in horses.

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Fluxo do fósforo de diferentes fontes de fosfatos em bovinos

Cited by 4 publications

References 5 publications

Phosphorus Kinetics in Calves Submitted to Single Infection with Cooperia punctata

Phosphorus Kinetics in Calves Submitted to Single Infection with Cooperia punctata

Journal of Agricultural Science, Vol. 1, No. 2, December 2009, all in one file

Metabolismo do fósforo em eqüinos. 1. Avaliação dietética de diferentes fontes de fósforo

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