02503nab a2200301 i 4500003000900000005001700009008004100026040001800067072002100085100003400106100002600140100002500166100002100191100003000212100002200242100002200264245009600286500007000382520140000452650001801852650002401870650001201894650001001906650001401916650002901930773016401959856007802123BR-BrBNA20250404175602.0250404b2020    bl.ar|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aQ52b0120 - 8952  aMotta, Antonio Carlos Vargas   aAraujo, Eloá Moura   aBroadley, Martin R.   aYoung, Scott D.   aBarbosa, Julierme Zimmer   aPrior, Stephen A.  aSchmidt, Patrick   aMinerals and potentially toxic elements in corn silage from tropical and subtropical Brazil  aPublicação on-line; 33 ref.; 3 illus; 7 tables; Sumaries (En)  a

ABSTRACT - Our aim was to assess the mineral composition of corn silages produced in four states of Brazil: Goiás, Minas Gerais, Paraná, and Santa Catarina. In total, seventy-three samples were analyzed. Total element content was extracted by HNO3  and H2 O2  microwave-assisted digestion, and inductively coupled plasma-mass spectrometry (ICP-MS) was used to determine concentration. Of the 31 elements analyzed (Ag, Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cs, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, Rb, S, Se, Sr, Ti, Tl, U, V, and Zn), 21 had concentrations above equipment detection limits. No elements reached the maximum tolerable concentration, but concentrations of Ca (0.14-0.15%), Cu (3.4-5.6 mg kg−1), P (0.13-0.16%), S (0.06-0.08%), and Zn (13-19 mg kg−1) were below the adequate concentration for good nutritional balance. The strong and consistent correlation observed between Fe and Ti in silage samples indicated contamination by soil. Mean concentrations of Cu, Mn, Mo, P, S, and Zn were different among states, and canonic analyses successfully discriminate samples according to their state of origin. Minerals from corn silage should be considered when formulating balanced cattle diets. To ensure silage quality, farmers must adopt strategies that reduce contamination by soil during the ensiling process.

Keywords: dairy nutrition, elemental composition, Zea mays L  aGADO LEITEIRO  aNUTRIÇÃO ANIMAL  aSILAGEM  aMILHO  aQUALIDADE  aCOMPOSIÇÃO QUÍMICA0 03545dViçosa-MG Sociedade Brasileira de Zootecnia  1997o2024-4310tRevista Brasileira de Zootecnia (Brazil)x1516-3598gv. 49 p. 1-15 ; (2020)wBR2024000523  uhttps://www.scielo.br/j/rbz/a/wpnzCxZYc7sCRnmq3M9XLHP/?format=pdf&lang=en