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The increased milk yield in dairy cattle has made it increasingly difficult to balance accurately the feed ration. This results in energy and mineral deficiencies as well as various homeostasis disorders including calcium and magnesium balance disorders, which in turn lead to metabolic disorders. In our study, we chose to assess the therapeutic efficacy of two most popular products of this type i.e. Glucalvet (Vetoquinol Biowet) and Antiparen-N (Vetoquinol Biowet). The study was conducted on 33 HF cows dipslaying symptoms of postparturient paresis that occurred between 2 and 4 day postpartum. The cows were divided into two groups: group A and group B, which were administered Glucalvet and Antiparen-N, respectively. Blood samples were taken twice from the jugular vein of each animal – just before and 24 hours after drug administration. The samples were used to determine serum concentrations of Ca, Mg, P, Cl and glucose. The average body temperature in both groups was slightly below normal and statistically significantly increased 24 hours after the intravenous infusion. The same tendency was observed for the pulse rate. The magnesium levels in the first group improved significantly after drug administration but its level was still lower than the physiological range. In the second group of animals, a slight drop in the Mg level after the Antiparen-N administration. Levels of Ca and P increased in both group of animals after the treatment. The average chloride concentration was similar for both assays. The serum glucose concentration increased significantly in both groups of animals after drug administration. Summing up, the study presented in this paper indicates that Glucalvet and Antiparen-N prove to be useful in the treatment of post-parturient paresis conditioned by Ca and Mg deficiency.
Infection with bovine viral diarrhea virus is widespread in cattle populations all over the world and thus results in significant economic and breeding losses in herds of various sizes. The studies were conducted on 270 dairy cattle herds that have never been vaccinated against BVDV. Altogether 3732 samples were tested. Antibodies to BVDV were detected in 53.9% of herds. The correlation between herd size and seroprevalence was statistically significant and equal to 0.319 (p < 0.001). Analysis of clinical signs of BVD commonly observed in dairy cattle made it possible to conclude that a sudden drop of milk yield (OR = 2.037), diarrhea in calves (OR = 1.422), emaciation in young animals (OR=1.774) and emaciation in adults (OR = 1.715) were observed much more frequently in infected than uninfected herds. No increase was noted in the occurrence of other clinical signs regarded as typical for infected herds, such as spontaneous abortions and fetopathies in cows or respiratory and alimentary tract disorders.
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