Noticeable reserves for the increase of production of goods of stock-raising are based on the increase of coefficient of transformation of nutrients of fodder due to application of enzyme additives.

Enzymes are biologically active substances, that are not accumulated in an organism, they do not pollute an environment, positively influence on transformation of energy and nutrients of fodder in stock-raising products. Enzyme preparations are the obligatory constituent of the mixed fodders for poultry. Forage enzymes do not operate directly on microbes to the intestine, but influence on their food base.

Increase of digestibility of cellulose in the rations of chickens-broilers as a result of application of the microbinale cellulase with an increase hydrolysis activity, obtained due to improvement of biotechnology, has an important scientific and practical value. So, optimization of nourishing environment for the strain Aspergillus terreus of Copper in organic-mineral compound allows to get ultimate product –forage additives of cellulase enzyme.

Application of the experimentally set optimal concentration of complex Copper in composition of nourishing environment for the strain of Aspergillus terreus allows to obtain domestic celluloselytic enzyme additives with an increase hydrolysis activity and resistance to drying. It in turn is one of ways of improvement of domestic biotechnology of cellulase production.

The objective of the research – studying efficiency of the use of enzyme of cellulase, obtained due to the improvement of biotechnology in the feeding of chickens broilers.  

On the basis of model, biochemical and scientific results of investigation it was proved the necessity of correction of mineral compound of nutrient environment for the strain Aspergillus terreus of Copper with the help of it’s chelate form, efficiency of feeding it in the combination of mixed fodder of this enzyme to chickens broilers was set. Using cellulase in the mixed fodder for chickens broilers, obtained due to the improvement of biotechnology leads to the increasing of their productivity by 9,5 % (р≤0,001).

To prove the results of scientific experiments in the condition of “Poultry Farm Bershadskiy” production monitoring of efficiency use of enzyme of cellulose obtained due to improvement of biotechnology was conducted. With this aim among of one-day age chickens broilers control and tested groups were formed containing 320 heads each. Control group received a standard ration which contained celluloselytic enzyme from the strain Aspergillus terreus which was cultivated on the nutritive environment without introduction of Copper. Tested group was given cellulose in the amount of 1 ton of mixed fodder – 68,0 g. Cellulase, obtained from mushrooms grown up on cultural fluid with content 0,5mg/l of organic complex of Copper. Indices of micro climate, care of chickens and their keeping were the same for all groups and met to the set requirements.  

Results of conducted production examination proved positive influence of introduction cellulose lytic enzymes to the combination of mixed fodder on the average daily gain of chickens broilers. Thus, replacement cellulose of mushroom origin obtained without introduction of Copper on the enzyme obtained from the strain Aspergillus terreus which was cultivated on the nutrient environment with content of metal 0,5 mg/l in the form of organic- mineral complex in the compound of mixed fodder for chickens broilers promotes increase of poultry productivity by 2,5 %.  

With the increase of growth intensity of tested chickens fodder costs on 1 kg of live weight was marked, it was 4,8 % less than in the control. It should be noted that quantity and cost of used fodder additives were different.  

In the result of calculation of economic efficiency of the use of cellulase of different origin during the period of chickens growing had impact to the profit from sale of chickens live weight.

So, feeding of the recommended mixed fodders during growing of chickens-broilers assisted the increase of population and gross production of meat, accordingly, by 0,9 and 3,5 % comparatively with control.

As a result of increase of gross production of goods expense of the mixed fodder volume from a calculation on 1 kg of increase of live weight in the tested group were by 4,81 % less comparatively with control. Additional introduction cellulase to the mixed fodder obtained with using organic complex of Copper decreased the cost of fodder, as a result general costs on the production of meat of chickens-broilers in the experiment diminished by 1,3 %. After conducted calculation, prime price of 1 kg of broilers increases in the tested group adn was by 4,6 % less comparatively with this index of control group.

Aspergillus terreus that was cultivated on a nourishing environment with maintenance of metal 0,5 mg/l in the form of organic complex, for growing of chickens-broilers, that assisted the increase of level of profitability by 8,6 % comparatively with control. For the increase of the productivity, reduction of charges of forage on unit of increase of chickens-broilers and improvement of breaking up of cellulose that is an antinourishing factor, it is necessary to add to one ton of the mixed fodder 68,0 g of the cellulase obtained from the strain Aspergillus terreus that was cultivated on a nourishing environment with compound 0,5 mg/l of organic complex of Copper.

Key words: chickens-broilers, enzyme cellulose, organic complex of Copper, economic efficiency, net profit, profitability.