Determinação da biodisponibilidade do fósforo de diferentes fontes pela técnica de diluição isotópica, em suínos em crescimento

Teixeira, Alexandre de Oliveira; Lopes, Darci Clementino; Lopes, João Batista; Vitti, Dorinha Miriam Silber Schmidt; Gomes, Paulo Cézar; Hostagno, Horacio Santiago; Moreira, José Aparecido; Inácio, Félix

doi:10.1590/s1516-35982004000500015

Cited by 11 publications

(18 citation statements)

References 15 publications

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“…With respect to the bone resistance, the ranking of P sources in the present work resulted similar to that based on P bioavailability values for the same inorganic sources evaluated by Teixeira et al (2004a). Thus, it is reasonable to consider that although the diets contained the same levels of total P, the animals used different amounts for tissue building.…”

Section: Morphometric Parameterssupporting

confidence: 70%

“…Samples of P sources were analyzed according to the method described by Teixeira et al (2004a). Calcium:phosphorus (Ca:P), and phosphorus:fluorine (P:F) ratios of the phosphorus sources.…”

Section: Husbandry and Dietsmentioning

confidence: 99%

“…However, few studies (Teixeira et al, 2004a;Souza et al, 2009) have been published analyzing bone parameters affected by different sources of P in pig diets. Changing the inorganic P source for pigs can cause a change in bone metabolism, altering the characteristics of bone tissue and the incidence of damage, such as fractures.…”

Section: Introductionmentioning

confidence: 99%

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Bone characteristics of pigs fed different sources of phosphorus

Teixeira

Corassa

Moreira

et al. 2016

Rev Colomb Cienc Pecu

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SummaryBackground: phosphorus supplementation should help to keep bone integrity and prevent fractures during the development and slaughter of animals. Objective: to evaluate the effect of different phosphorus sources on bone characteristics of pigs. Methods: one-hundred and twelve piglets (28.65 ± 2.82 Kg body weight) were distributed into an 8×2 factorial arrangement (eight sources of phosphorus × two sexes) in blocks in a completely randomized design. The diets were formulated on a total-phosphorus basis, with 0.32 and 0.31% of P for the control diet and 0.56 and 0.42% of P for the other treatments in the growth and finishing phases, respectively. Phosphorus was supplemented as dicalcium phosphate (DCP); mono-dicalcium phosphate (MDCP); triple superphosphate (TSP); single superphosphate (SSP); Catalão-rock phosphate (ROCK); a mixture of sources (MIX); phosphoric acid (PPA); and the control diet (CTR). Results: there was no interaction between phosphorus sources and sex in any of the parameters. Thickness of the compact tissue was the

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Section: Morphometric Parameterssupporting

confidence: 70%

“…Samples of P sources were analyzed according to the method described by Teixeira et al (2004a). Calcium:phosphorus (Ca:P), and phosphorus:fluorine (P:F) ratios of the phosphorus sources.…”

Section: Husbandry and Dietsmentioning

confidence: 99%

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Bone characteristics of pigs fed different sources of phosphorus

Teixeira

Corassa

Moreira

et al. 2016

Rev Colomb Cienc Pecu

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“…Neste experimento 45% do fósforo consumido da dieta controle foi absorvido, seguidos de 75, 68, 55, 72, 82 e 56% para fosfato bicálcico, fosfato monobicálcico, superfosfato triplo, superfosfato simples, ácido fosfórico e fosfato de rocha catalão, respectivamente, valores similares aos obtidos por Teixeira et al (2004a) em experimentos sobre biodisponibilidade.…”

Section: Resultsunclassified

“…Muitos estudos já foram desenvolvidos com fósforo para avaliar as fontes alternativas, as exigências nutricionais e a adição de enzima fitase (Teixeira et al, 2004a, Sheng et al, 2006Moreira et al, 2009ab). O surgimento de modelos matemáticos para o estudo do metabolismo animal tem permitido a exploração mais eficiente dos dados obtidos em experimentos com o uso da técnica de diluição isotópica, pela qual se usa o fósforo radioativo 32 P como traçador.…”

Section: Introductionunclassified

Comparação e aplicação de dois modelos matemáticos no estudo do metabolismo de fósforo em suínos

Moreira¹,

Vitti

Teixeira³

et al. 2010

R. Bras. Zootec.

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RESUMO -Avaliaram-se dois modelos matemáticos no estudo do fluxo de fósforo no metabolismo de suínos com os objetivos de destacar o modelo mais eficiente e indicar a fonte de fósforo com maior potencial para uso na nutrição de suínos.Foram usados 21 suínos, híbridos machos castrados com peso médio inicial de 32 kg, alimentados com dietas formuladas à base de milho, farelo de soja e óleo vegetal, suplementadas com fosfato bicálcico; fosfato monobicálcico; superfosfato triplo; superfosfato simples; ácido fosfórico ou fosfato de rocha catalão como fontes de fósforo. O delineamento experimental foi o de blocos casualizados, com sete dietas e três repetições, com um animal por unidade experimental. Para o desenvolvimento dos dois modelos, foram utilizados dados de metabolismo e cinética de fósforo nos tecidos, obtidos pela técnica de diluição isotópica. Os modelos apresentaram similaridade e eficiência na determinação das estimativas do fluxo de fósforo nos compartimentos anatômicos. O superfosfato simples e o fosfato bicálcico têm maior potencial para uso em dietas para suínos em crescimento. Entretanto, o fosfato bicálcico apresenta melhor ajuste nos modelos e serve como padrão para nutrição de suínos em crescimento.Palavras-chave: diluição isotópica, fósforo endógeno, metabolismo, modelo matemático, radiofósforo Comparison and application of two mathematical models in the study of the phosphorus in pig metabolismABSTRACT -The aim in this work was to evaluate two mathematical models on the study of the flow of the phosphorus in metabolism of swines aiming at highlighting the most efficient model and indicating the highest potential phosphosrus source to be used in nutrition for swines. It was used 21 hybrid barrow at 32 kg initial weight fed diets based on corn, soybean meal and vegetal oil, supplemented with dicalcium phosphate, monodicalcium phosphate, triple superphosphate, simple superphosphate, Catalão rock phosphate or phosphoric acid as sources of phosphorus. The experiment was arranged in randomized blocks, with seven treatments and three replicates and one animal per experimental unity. Metabolism data and kinetics of phosphorus in tissues obtained by the isotopic dilution technique were used for development of the two models. The models presented similarity and efficiency in the determination of the estimates of the phosphorus flow in the anatomical compartments. Simple superphosphate and dicalcium phosphate have more potential to be used in growing swines. However, dicalcium phosphate presentes better adjustment in the models and it can be used as a standard for nutrition of growing swines.

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