Abstracts
Forty-nine male calves were allotted in a randomized design, initially seven replicates per treatment at the end of the experiment were slaughtered four animals per treatment. Treatments CONT: control diet; FBC120: Dicalcium Phosphate 120:1 ratio P: F; MBC60: Monodicalcium phosphate 60:1 ratio P:F; FBC30: Dicalcium Phosphate 30:1 ratio P:F; SFT30: Super triple phosphate 30:1 ratio P:F; FBC10: Dicalcium Phosphate 10:1 ratio P:F; CAR10: concentrated ratio of 10:1 rock Q:F. Phosphates less elaborate showed higher amounts of heavy metals. In bones, iron, aluminum and lead were higher in FBC10 diet, the copper content was higher in animals fed the diet MBC60. Magnesium in liver was higher in animals fed diet FBC30, aluminum was higher for treatments SFT30 and FBC10, FBC120 and the cadmium and lead levels were higher in animals that received STF30. Treatments did not affect phosphorus and fluorine in muscle and heart, being that chromium was higher in the muscle of animals fed diets CAR10 and STF30 while cadmium in heart was greater in diet CAR10. Kidney phosphorus was higher in the animals fed the diet CAR10 and lower dietary FBC10, while aluminum was higher in the animals fed with the diet FBC10 and lower dietary FBC120 and levels of chromium and lead were higher in animals CAR10 diet and lowest in diet MBC60. Alternative sources of phosphorus and low ratios P:F increased the deposition of minerals in bones and liver, and this mineral deposition was lower in the muscles.
cadmium; heavy metals; liver; muscle; nutrition
Quarenta e nove novilhos machos foram distribuídos em delineamento casualizado, inicialmente com sete repetições por tratamento, sendo que, ao final do experimento, foram abatidos quatro animais por tratamento. Os tratamentos foram CONT: Dieta controle; FBC120: Fosfato Bicálcico 120:1 de relação P:F; MBC60: Fosfato monobicálcico 60:1 de relação P:F; FBC 30:1: Fosfato Bicálcico 30:1 de relação P:F; SFT30: Super Fosfato Triplo 30:1 de relação P:F; FBC10: Fosfato Bicálcico 10:1 de relação P:F; CAR10: Concentrado de Rocha 10:1 de relação P:F. Os fosfatos menos elaborados apresentaram maiores concentrações de metais. Nos ossos, os teores de ferro, alumínio e chumbo foram maiores para a dieta FBC10, enquanto o cobre foi maior na dieta MBC60. Magnésio foi mais presente no fígado de animais que consumiram a dieta FBC30, enquanto alumínio foi maior para SFT30, FBC10 e FBC120; cádmio e chumbo foram maiores para a dieta STF30. Os tratamentos não influenciaram fósforo e flúor em coração e músculos. O cromo foi mais presente no músculo de CAR10 e STF30 e o cádmio foi mais encontrado nos corações de CAR10. Nos rins, fósforo foi mais presente na dieta CAR10 e menor na dieta FBC10, enquanto alumínio foi maior na dieta FBC10 e menor na dieta FBC120 assim como os teores de cromo e chumbo foram maiores nos animais da dieta CAR10 e menores na dieta MBC60. Fontes alternativas de fósforo e baixas relações P:F aumentaram a deposição de minerais em ossos e fígado, sendo menor nos músculos.
cádmio; fígado; metais pesados; músculo; nutrição
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Publication Dates
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Publication in this collection
02 Feb 2015 -
Date of issue
Dec 2013
History
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Received
12 Nov 2013 -
Accepted
23 Dec 2013
