virginiamycin and cyadox

Chickens infected with highly virulent Marek's disease virus were administered in the course of 56-day fattening cyadox at a dose of 20 mg per kg feed mixture (MC group). and virginiamycin at a dose of 10 mg per kg feed mixture (MV group). The weight gains on the 56th day and dressing percentage were highest, in comparison with the control group (711.11 g and 60.62%), in the virginiamycin-treated group. An investigation into the basic chemical composition of meat revealed lower contents of dry matter and proteins in the virginiamycin-treated group (26.9% and 22.76%) if compared with the control group of chickens which were also infected with Marek's disease virus. A biometrical examination of the organs showed a statistically significant decrease in heart weight in the cyadox-treated group, increase in liver and heart weight and intestine shortening in the virginiamycin-treated group, in comparison with the control group. Pathologico-anatomical changes typical of Marek's disease were recorded in a randomly selected number of chickens in 33.3% in the control group, in 28.5% in the cyadox-treated group and in 50.0% in the virginiamycin-treated group.

Topics: Animals; Anti-Bacterial Agents; Chickens; Marek Disease; Poultry Diseases; Quinoxalines; Virginiamycin

Nitrovin administered at the dose of 15 mg per 1 kg of diet, cyadox (20 mg) and virgiamycin (10 mg) were studied as to their effect on the contents of calcium, sodium, potassium and magnesium in the blood serum, breast and thigh muscles, and feathers of chickens. The contents of calcium, sodium, potassium and magnesium in the blood serum ranged within the physiological limits. An increased content of calcium and potassium and a decreased content of sodium were recorded in the breast and thigh muscles, as compared with the control group. The contents of these macroelements in the feathers of the experimental group were significantly different from those in the birds of the control group.

Topics: Animals; Anti-Bacterial Agents; Chickens; Electrolytes; Growth Substances; Nitrovin; Quinoxalines; Tissue Distribution; Virginiamycin

Chickens, fattened for 56 days, were treated with nitrovin at the dose of 15 mg per kg of feed, cyadox at the dose of 20 mg per kg of feed, and virginiamycin at the dose of 10 mg per kg of feed. After the fattening, the chickens were studied for the contents of copper, zinc, and manganese in the blood serum, thigh muscle, breast muscle, and feathers. The contents of copper, zinc and manganese in the serum ranged within the limits of physiological values. As for the breast muscle, the content of copper increased but the content of manganese declined in both breast and thigh muscle, as compared with the control group. The feathers contained more manganese in all the groups, as compared with the controls.

Topics: Animals; Anti-Bacterial Agents; Chickens; Growth Substances; Nitrovin; Quinoxalines; Tissue Distribution; Trace Elements; Virginiamycin