Продуктивность и естественная резистентность кур-несушек при использовании ферментного препарата Витазим
2009
Shulga, L.V., Vitebsk State Academy of Veterinary Medicine (Belarus)
Determination of productivity and natural resistance indexes of laying hens after application of dry multienzyme preparation Vitazim (xylanase, 3600 units/g; cellulose, 3000 units/g; beta-glucanase, 7000 units/g); as well as the specification of optimal doses the enzyme were realized in the conditions of the Republic of Belarus. Research results showed that the best indexes of egg yields of laying hens were obtained after application in the main poultry diet of enzyme preparation Vitazim in dose 500 g/t that made it possible to increase the productivity in the experimemtal group on 12%. Application of Vitazim also promoted the increasing of natural resistance level of laying hens. There was stated the positive effect of Vitazim on bactericidal activity of blood serum. Before the beginning of test this index was the level of 44,35+/-0,92 – 56,52 +/-1,63. By the 300-th day of life the bactericidal activity of blood serum in experimental group administrated Vitazim in dose 300 g/t exceeded the control idexes on 3,8%; in the second experimental group (Vitazim in dose of 500 g/h) – on 29,5%; in the third experimental group (/vitazim on dose of 700 g/h) – on 23,7%.Vitazim administration also exercised positive influence on lysozyme activity in blood serum of lying hens
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