[Effect of salinomycin on lambs for fattening]. / Vliianie na salinomitsina vurkhu agneta za ugoiavane.

When applied to male Trakiiska tunkorounna lambs of initial weight 18.6 kg in the course of 90 days at concentrations of 6 g, 12 g, and 24 g per ton of forage slinomycin brought about a rise of liveweight and average weight gain in the treated animals (for the weight gain 12.2, 16.7, and 19.4 per cent, respectively, as against the controls). The conversion rate (intake per kilogram of weight gain) was by 9.7, 16.6, and 22.2 per cent, respectively, higher. The intake of forage progressively dropped when offering higher concentration of the antibiotic, particularly during the second half of the experimental period. Highest was the effect of adding 24 g salinomycin to a ton of forage. Salinomycin induced no essential changes in the slaughter indices and in the content of cyanocobalamin in the meat. However, cyancobalamin was found to be at a higher level in the liver.

[Nutritive action of flavophospholipol and virginiamycin on broiler pullets]. / Prouchvaniia vurkhu nutritivnoto deistvie na flavofosfolipola i virginiiamitsina pri pileta broileri

Studied were some of the aspects of the antibiotic treatment with flavophospholipol (moenomycin) as the preparation flavomycin, and virginiamycin (staphylomycin) as the preparation escalin in a premix form as an animal formula. It was found that the antibiotics tested acted as nutrients: they had a positive effect on the growth and feed conversion. They raised the production of meat and improved the quality of the meat product in terms of higher protein and mineral contents. They also influenced favorably the deposition of cyanocobalamin in the liver, the RNA: DNA ratio in the liver and pancreas, and the content of blood proteins. These antibiotics did not lead to the retention of residual amounts in the muscles and viscera. Both preparations proved useful for the practice. Flavophospholipol is of interest thanks to its easier dosing and positive effect on the cyanocobalamin and ubichinon deposition in the liver and partly as its stimulative action.