[Selenium and copper content, interrelation between ovine wool and soil from grazing areas at Cuajomulco and Tres Marias, Morelos, Mexico] | Interrelacion del contenido de selenio y cobre en lana de ovinos y suelo de la zona de pastoreo de Cuajomulco y Tres Marias, Morelos, Mexico (Nota Informativa)
1997
Guerrero Betanzas, Laura L. | Bautista Ordonez, Janitzio Ariel | Rosiles Martinez, Rene
In order to fullfill the objectives of this study, six wool sheep and 14 soil samples from Tres Marias as well as 16 wool and 10 soil samples from Tres Marias besides grazing also received Se supplementation. Wool and soil samples were wet acid digested for Se and Cu analyses by flame and borohydride vapor generation atomic absorption spectrometry. Wool mean of Se concentration differed statistically between sheep from Tres Marias (66.7 ppb) and Cuajomulco (no measurable amounts), indicating that sheep from Cuajomulco suffered Se deficiency. Wool Cu content in both groups was in healty ovine range, 13.3 and 8.9 ppm, respectively. Soil samples from both areas had no Se detectable amounts, indicating soil deficiency, but no Se deficiency was recorded in the Tres Marias sheep group due to its supplementation. Cu soil concentration was 5.2 and 3.2 ppm from Tres Marias and Cuajomulco, respectively, indicating healty amounts. It can ben concluded that Se feed supplementation is needed for sheep in Cuajomulco
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