Passive immune status and calf health in neonatal period
2011
Jonic, B., Faculty of Veterinary Medicine, Belgrade (Serbia) | Dimitrijevic, B., Faculty of Veterinary Medicine, Belgrade (Serbia) | Mirilovic, M., Faculty of Veterinary Medicine, Belgrade (Serbia) | Bukvic, M., Faculty of Veterinary Medicine, Belgrade (Serbia)
In the conditions of intensive calf management up to the age of one month it is very important to establish the influence of passively acquired immunoglobulin on the calf health status and disease occurrence. All examined calves were divided in three groups according to the course of disease. In the first group of calves (n = 8) there were no general conditions disorders (x = 4.0 +/- 0.0 points). In the second group of calves (n =15) disease lasted up to the five days and was accompanied by general condition disorders (x = 3.2 +/- 0.7 points). In the third group of calves (n = 22) diseases lasted longer than five days, with the deterioration of general condition at the end of a process (x = 2.7 +/- 1.1 points). Calves blood serum immunoglobulin concentrations were determined by zinc-sulfate method (ZTT – test). Mean blood serum immunoglobulin concentrations were 41.25 +/- 4.3 g/l, 14.53 +/- 4.9 g/l and 9.68 +/- 3.37 g/l in the first, second and third group of calves. There were statistically significant differences between mean blood serum immunoglobulin concentrations in all experimental groups of calves (p is less than 0.01). In the same housing conditions of calves failure of passive immune transfer could represent etiologic factor that contributes to the occurrence of calves diseases, In gestion of the adequate immunoglobulin amount protect the calves from infective agents that cause septicemia, pneumonia or enteritis. Blood serum immunoglobulin level of 25g/l is adequate to establish protection from infective diseases. Diseased calves have significantly lower blood serum immunoglobulin concentrations compared to the group of healthy calves of the same age.
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