RESUMO
The aims of this study were to determine some major biochemical alterations observed in first calving cows with udder edema during the periparturient period and to detect some associations between dietary factors and the disease. For that, the concentrations of some electrolytes (Na(+), K(+), Cl, Ca(2+), P and Mg(2+)), lipid (triglycerides and cholesterol) markers and lipoproteins (HDL, LDL and VLDL) and total proteins were measured in serum samples collected from 70 first calving cows (35 with udder edema and 35 healthy ones) whereas the percentages of dry matter and crude proteins and the electrolyte (Na(+), K(+), Cl, Ca(2+), Mg(2+), P and sulphates) amounts in feed rations were determined in parallel. The total protein, the calcium and the phosphorus as well as the concentrations of lipid markers and lipoproteins (HDL and LDL) were significantly decreased in first calving cows with udder edema compared to the healthy ones and these biochemical alterations were correlated with a reduced dry matter content and an electrolyte desequilibrium mainly involving Na(+) and Cl(-) in feed rations distributed to the cows with udder edema. To our knowledge the mechanism(s) of physiologic udder edema is uncertain and the obtained results suggest that a transient liver dysfunction (decreased total protein and LDL) probably linked to a feed ration deficient in dry matter may be involved in the aetiology of the udder edema in first calving cows.
RESUMO
This research was conducted to determine selenium, copper, zinc, iron, calcium, phosphorous and magnesium concentration in the pus of cow liver abscess. The liver has a large reserve of function and approximately three-quarters of its parenchyma must be rendered inactive before clinical signs of hepatic dysfunction appear. Local suppurative infections of the liver cause significant losses in feedlot and grain-fed cattle because of the frequency ofrumenitis in those cattle leading to hepatic abscess formation. Also we know some minerals that can alter and uphold the specific immunity. At the presence of adequate amount of zinc, the formation of hepatic abscess may reduce. For this reason and to determine the mineral concentration in pus, the present study was designed on 40 slaughtered cattle with liver abscess in Shahrekord district. For measuring the minerals concentration, Potentiometric Stripping Analyzer (PSA), atomic absorption spectrometry were used. Results showed that the concentration of Se, Zn, Fe, Cu, Ca, P and Mg in pus were 0.551A+/-0.046 (mg kg(-1)), 6.41A+/-2.32 (mg kg(-1)), 18.18A+/-14.03 (mg kg(-1)), 6.63A+/-4.83 (mg kg(-1)), 221.8A+/-85.82 (mg kg(-1)), 0.85A+/-0.32 (g kg(-1)) and 40.64A+/-21.72 (mg kg(-1)), respectively. The concentration of mentioned minerals in liver parenchyma's were determined 1.06A+/-0.15 (mg kg(-1)), 82.91A+/-32.22 (mg kg(-1)), 62.29A+/-22.12 (mg kg(-1)), 39.22A+/-28.17 (mg kg(-1)), 0.12A+/-0.04 (g kg(-1)), 1.81A+/-0.56 (g kg(-1)) and 0.15A+/-0.07 (g kg(-1)), respectively. For determining the correlation between mineral concentration in pus and liver parenchyma, Pearson correlation was used at The level of p<0.05. The correlation between pus Fe and Cu and also Ca and Se were significantly positive (pvalue = 0.000228, r = +0.871) and negative (pvalue = 0.0305, r = -0.623), respectively. In liver parenchyma the correlation between Zn and Ca (pvalue = 0.0487, r = 0.535) and also Fe and Cu (pvalue = 0.0317, r = +0.596) were significantly positive.
