Mineral Profile of Grazing Dairy Cows Feeding in Tobaccoor Dairy Farms in the North western of Argentina-Juniper Publishers
JUNIPER PUBLISHERS - OPEN ACCESS JOURNAL OF DAIRY & VETERINARY SCIENCES Abstract Dairy and tobacco productions, often complementary in the same farm, represent one of the most important economies of Salta province, Argentina. The aim of this work was to evaluate plasma levels of calcium (Ca), phosphorum (P), magnesium (Mg), copper (Cu) and zinc (Zn) between dairy cows from two tobacco-dairy farms (TDF) and from two non-tobacco dairy farms (nTDF). Blood samples were obtained of 10 cows of different physiological productive periods (pre partum, fresh cow, second third of lactation and late lactation). Values Ca, Mg, Cu and Zn serum were performed by atomic absorption spectrophotometry and P values by UV-visible spectrophotometry. The relationships between variables of serum values were analyzed using linear correlation and simple linear regression; in addition, the probability of occurrence of hypocalcemia was analyzed by odds ratio (OR). Total Ca and P levels we...