Studies on the Biological Value of Inorganic Phosphates

Gillis, Marc‐Antoine; Norris, L. C.; Heuser, G. F.

doi:10.1093/jn/52.1.115

Cited by 65 publications

(25 citation statements)

References 3 publications

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“…A relação entre o valor observado e o estimado foi a biodisponibilidade relativa obtida. O método empregado foi o da abscissa, de acordo com Gillis et al (1954).…”

Section: Methodsunclassified

Utilização de fosfatos comerciais para frangos de corte na fase inicial

Queiroz

Bertechini

Rodrigues

et al. 2008

Pesq. agropec. bras.

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.br, bertechini@ufl a.br, pborges@ufl a.br, guerrero@ufl a.brResumo -O objetivo deste trabalho foi avaliar o desempenho e a mineralização óssea de frangos de corte, na fase de 1-21 dias de idade, e a biodisponibilidade de fósforo de fosfatos comerciais utilizados na alimentação de frangos de corte. Mil e oito pintos machos de um dia de idade foram distribuídos em 14 tratamentos, com 6 repetições de 12 aves cada, em delineamento inteiramente ao acaso. Os fosfatos avaliados foram o defl uorizado, monocálcico B, bicálcico A, bicálcico B e bicálcico C, com dois níveis de fósforo disponível (0,30 e 0,40%). Foi adotada a técnica da abscissa e o fosfato monocálcico A como padrão (valor 100%), com quatro níveis de fósforo disponível: 0,25, 0,35, 0,45 e 0,55% para o cálculo da biodisponibilidade relativa. Todos os fosfatos com 0,40% do fósforo disponível proporcionaram às aves ganho de peso semelhante. Houve maior mineralização óssea das aves com o fosfato monocálcico B, comparado ao fosfato defl uorizado. As fontes de fósforo apresentaram pequenas diferenças nos valores de biodisponibilidade relativa, com melhores resultados quanto ao monocálcico B e com maior sensibilidade de resposta da variável cinzas ósseas, em relação ao ganho de peso.Termos para indexação: biodisponibilidade, cinzas ósseas, desempenho, fontes de fósforo. Utilization of commercial phosphates for broilers in the starter phaseAbstract -The objective of this work was to evaluate the performance and the bone mineralization of broilers, at 1 to 21 days of age, and the bioavailability of phosphorus in commercial phosphates utilized in the broilers feeding. One thousand and eight male chickens of one day old were distributed in a completely randomized design, in fourteen treatments, with six replications of twelve birds each. Phosphates evaluated were: defl uorinated phosphate, monocalcium B, dicalcium A, dicalcium B and dicalcium C, with two levels of available phosphorus (0.30 and 0.40%). For the evaluation of the relative bioavailability, the abscissa technique was used, and the monocalcium A phosphate was taken as standard (value of 100%), with four levels of available phosphorus: 0.25, 0.35, 0.45 and 0.55%. All the phosphates with 0.40% of available phosphorus levels propitiated similar weight gain to broilers. The monocalcium B resulted in higher bone mineralization of broilers than the defl uorinated phosphate. The different phosphorus sources presented few differences in the values of relative bioavailability of phosphorus, with better results for the monocalcium B and with higher sensibility response for bone ashes than for body weight gain.Index terms: bioavailability, bone ash, performance, phosphorous sources. IntroduçãoO sucesso da atividade avícola é resultado do equilíbrio entre lucro e produção, sendo a alimentação responsável por 70 a 80% do custo total, o que justifi ca o elevado número de pesquisas desenvolvidas na área.A baixa disponibilidade de P nos alimentos vegetais usados nas rações animais torna necessária a suplementação desse m...

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“…A relação entre o valor observado e o estimado foi a biodisponibilidade relativa obtida. O método empregado foi o da abscissa, de acordo com Gillis et al (1954).…”

Section: Methodsunclassified

Utilização de fosfatos comerciais para frangos de corte na fase inicial

Queiroz

Bertechini

Rodrigues

et al. 2008

Pesq. agropec. bras.

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“…The method was based on relative percentage of tibia bone ash of chicks fed a test supplement to that of chicks fed a reference standard, thus obtaining relative bioavailability P values [32]. A positive linear relationship was found between tibia bone ash percentage and dietary P intake.…”

Section: Biologically Determined Valuesmentioning

confidence: 99%

Phosphorus Bioavailability: A Key Aspect for Conserving this Critical Animal Feed Resource with Reference to Broiler Nutrition

Zhang

Yang

et al. 2016

Agriculture

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Phosphorus (P) is an essential element, and the majority of animal feed phosphate is derived from phosphate rock that is a non-renewable resource. Current global P reserves may be depleted in 50-100 years. This poses the challenge of securing future P supply for the global animal feed industries. Currently, nutritionists formulate diets with substantial safety margins to guarantee that animals do not become P deficient. Excessive dietary P concentrations increase, not only the cost of diets, but also P excretion and pollution of the environment. We contend that understanding P bioavailability is central to the sustainable use of this mineral in animal agriculture. Poultry accounts for approximately 50% of animal feed phosphate consumption worldwide and for this reason we use the meat chicken or broiler as a case study to explore the nuances of P bioavailability. We conclude that, to tackle the challenge of dietary P bioavailability, cooperative research on a global scale is needed to standardise measurement procedures in order to produce a robust and reliable database which can be used by nutritionists to formulate diets to meet the bird's P requirements precisely. Achievement of this goal will assist endeavours to sustain the global supply of phosphorus.

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“…GILLIS et al 6) first tried to determine quantitatively the availability of phosphorus, In the second kind of experiment, 340 White Leghorn male chicks of 7-day-old, which were raised on the restricted feeding program37), were divided into two groups of equal number and fed the standard diets containing either 0 or 0.3% of added phosphorus. Twenty chicks each were randomly selected and sacrificed at 6, 8, 10, 12, 14, 21, 28 and 35 days after the start of the experiment.…”

Section: Improvementmentioning

confidence: 99%