Beef cattle mineral nutrition in the Brazilian Pantanal. III. Macronutrients survey on the lower Piquiri

• Autor(a) principal: Pott, Edison B.
• Data de Publicação: 2014
• Outros Autores: Pott, Arnildo, Almeida, Irajá L. de, Brum, Paulo A. R. de, Filho, José A. Comastri, Tullio, Rymer R.
• 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/16544
• topic: native pasture; macroelements; calcium: phosphorus ratio; calcium; phosphorus; magnesium; potassium.; pastagem nativa; macroelementos; relação cálcio: fósforo; cálcio; fósforo; magnésio; potássio.

Analytical results of soil, forage plant and cattle bone samples, taken on three physiognomic units ("campo cerrado" or savana grassland, "campo limpo" or open grassland, and "cerrado" woodland/forest), are reported for the lower Piquiri in the Brazilian Pantanal. Average soil pH was 5.5; average levels of exchangeable cations were Al = 89 ppm, Ca = 142 ppm, Mg = 64 ppm, K = 58 ppm and Na = 5 ppm; and available P = 13 ppm. In the native forage plants P, K, Ca and Mg levels (mean) were 0.21%, 1.52%, 0.21% and 0.18%, respectively. Average concentrations of Ca, Mg and P in bone, in May, were 39.3%, 0.65% and 17.8%. The data do not evidentiate serious mineral deficiencies, however important components of cattle diet presented Ca: P ratio of c. 0.7:1.0.