Perfil hemogasométrico e eletrolítico de bovinos leiteiros hígidos no Sertão da Paraíba.

Abstract

Hemogasometric and electrolyte profile of healthy dairy cattle in Sertão da Paraíba. Most of the diseases that affect dairy cattle whether they are metabolic or not, that they are dehydrated, have a high potential to cause changes in acid-base and electrolyte balance. The objective of this study was to evaluate hemogasometric and letrolithic parameters in adult cows in lactation and on calves, both of them healthy, half-breed, with a high Holstein crossbreed and raised in a dairy farm in the city of Patos – PB. Were used fifty-two animals for the experiment, with thirty cows aged between 4 and 9 years old, in different lactation, and twenty-two calves, both sexes, with ages ranging from 2 to 11 months. Was used venous blood sample for the hemogasometric parameters analysis (pH, partial oxygen pressure, partial carbon dioxide pressure, oxygen saturation, total carbon dioxide, base excess and anion gap), electrolytes (sodium, potassium, chlorine, calcium, magnesium and phosphorus), lactate and hemoglobin. The mean values found by the hemogasometric analysis of the cows were kept within the normal range. In calves the mean pH value was slightly acid and the partial pressure of the carbon dioxide was high, thus suggesting that such animals exhibit mild respiratory acidosis. The mean anion gap values of calves were elevated when compared with the data of the literature and cows. The electrolytes evaluated in cows were normal, with the exception of calcium and magnesium, which were slightly decreased. In the calves the values of chlorine and potassium were similar to the reference values, but an increase in sodium levels and slightly decreased calcium levels were observed. The mean values of bicarbonate, hemoglobin and rectal temperature in both calves and cows were similar to those found in the scientific literature, as well as the mean lactate for cows. Most of the mean values found for the parameters evaluated were similar to those reported in the literature, and the results obtained can be used as reference values for adult dairy cows and dairy calves raised in the semi-arid region, serving as a reference base for elucidation of diagnoses and formulation of therapeutic protocols.