| Popis: |
The article provides data on the preventive efficacy of the drug "Dextranal" in gastrointestinal diseases of calves and pigs, as well as the effect of the drug on the resistance of newborn animals. Calves and piglets of the experimental groups were injected with the drug from the first day of life, 5 injections at different intervals, depending on the group. During the experiment, the animals were clinically examined daily. When symptoms of gastrointestinal or respiratory tract lesions appeared, clinical signs and duration were recorded. All sick calves, regardless of the group, were prescribed the use of the antibiotic "Dorin-R" in a dosage according to the instructions for use. The shortest duration of the disease was noted in the calves of the first experimental group that received Dextranal at a dose of 0.06 mg / kg (3.0 ml) with an interval of 3 days. This prophylaxis scheme reduces the duration of the disease in animals by 15% compared to the control group. The analysis of the results of the opsonophagocytic reaction (OFR) indicates an increase in the parameters of the phagocytic index, phagocytic number and phagocytic activity of the blood of animals of the experimental groups, which indicates the direct effect of the drug on cellular immunity. The maximum increase in live weight is observed in calves of the first experimental group, exceeding the same indicator of control by 7.4%. When using the drug "Dextranal" to piglets at a dose of 0.02 mg / kg with an interval of 4 days, there is a decrease in animal mortality by 4%. Also, when using the drug according to this scheme, the piglets of the experimental group on the 14th and 42nd days have a maximum increase in live weight in comparison with the same indicator in the control group. |
