Influence of cryptosporidiosis agent on biochemical and immunological parameters of blood of calves


Keywords: Cryptosporidiosis, calves, immunity, immunoglobulins, antibodies, glucose, invasion, total protein, calci-um

Abstract

Cows, young cattle and calves of black-and-bark breeds, spontaneously affected by the causative agent Cryptosporidium parvum, were selected for the research. Blood for research was taken from calves in the morning before feeding from the jugular vein. Biochemical parameters of blood serum were determined using a biochemical analyzer of the closed type. Changes in the activity of serum enzymes in the initial stages of the disease are not specific, they indicate a compensatory reaction of liver cells and biliary tract. Effect of Cryptosporidium in calves body accompanied by severe disorders that affect the metabolism of proteins, carbohydrates and enzymes. These changes lead to structural changes in the organs at the cellular level. Serum infested animals significantly reduced total protein content of 25.5% (P < 0.001), albumin – by 14.6% (P < 0.01), the concentration of glucose in – 21.2% (P < 0.01), carotene content – 12.6% (P < 0.05), the level of calcium and phosphorus – 17.5 and 18% (P < 0.05), respectively, and increased total bilirubin content by 23% (P < 0.001), indicating significant violations of the protein synthesis and detoxification processes in the liver and the tension in the metabolism of their body. Reduced glucose concentration in blood serum is due to the fact that in the body of sick animals there have been increased costs for maintaining the energy needs of its own organism. In conducting studies for 35 days in animals in the experimental group noted an increase in the concentration of circulating immune complexes by 10.5% relative to control. Increasing the concentration of circulating immune complexes in serum of calves, patients with cryptosporidiosis, indicates the presence of specific interaction antigen-antibody and decrease the activity of the humoral link of the immune system. In the determination of immunosuppressive proteins – serum cords in serum of calves, it was found that at 7, 14 days their concentration was within the physiological limits. Increasing the concentration of circulating immune complexes in serum of calves, patients with cryptosporidiosis, indicates the presence of specific interaction antigen-antibody and decrease the activity of the humoral link of the immune system.

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Published
2018-11-13
How to Cite
Zhurenko, V., & Zhurenko, O. (2018). Influence of cryptosporidiosis agent on biochemical and immunological parameters of blood of calves. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Veterinary Sciences, 20(88), 136-140. https://doi.org/10.32718/nvlvet8825