The paper deals with investigating the issue of poultry nutrition, particularly the quails of meat and eggs productivity direction of Faraon breed. There has been grounded the optimal doses of zeolite from Sokyrnytsy deposite influencing anabolic processes in the poultry positively. It has been found out that introducing 15% of zeolite from Sokyrnytsy deposite of Zakarpatska region to the ration is favorable for blood and liver biochemical indices and quails productivity. Direct proportional dependence between ferments activity and zeoilite portion in quails ration has been found out and grounded. The way to increase the productivity of Faraon quails breed is suggested.

Under modern conditions of non-traditional species of birds production is one of the ways of expanding the range of food stuff and improving the economic efficiency of poultry industry. Scientific support of the industry development ensures a highly public and dietary food due to the biological characteristics of quails.

Domestic deposits of natural zeolites containing macro-and micronutrients and having adsorption, ion exchange, detoxification and immobilizing properties, have recently gained popularity due to their impacts on productivity of farm animals.

Analysis of the literature indicates a lack of deep research on the use of zeolite Sokyrnytsia field region aiming at increasing productivity of Faraon quail breed. There are no studies aimed at examining the state of biological systems, chemical processes under the influence of zeolite.

The research was conducted in the vivarium of Scientific Research Institute of Ecology and biotechnology of Bila Tserkva national Agrarian University. Five groups of a day aged chicks were formed, each numbered 100 birds. 

Zeolites have a porous structure that can accommodate a wide variety of cations, such as Na⁺, K⁺, Ca²⁺, Mg²⁺ and others. These positive ions are rather loosely held and can readily be exchanged for others in a contact solution. Some of the more common mineral zeolites are analcime, chabazite, clinoptilolite, heulandite, natrolite, phillipsite, and stilbite. An example of the mineral formula is: Na₂Al₂Si₃O₁₀·2H₂O, the formula for natrolite.

Natural zeolites are formed at the places where volcanic rocks and ash layers react with alkaline groundwater. Zeolites also crystallize in post-depositional environments over the periods ranging from thousands to millions of years in shallow marine basins. Naturally occurring zeolites are rarely pure and are contaminated to varying degrees by other minerals, metals, quartz, or other zeolites. For this reason, naturally occurring zeolites are excluded from many important commercial applications where uniformity and purity are essential.

Zeolites are the alumina silicate members of the family of microporous solids known as "molecular sieves." The term “molecular sieve” refers to a particular property of these materials, i.e., their ability to sort molecules selectively based primarily on the size of exclusion process due to a very regular pore structure of molecular dimensions. The maximum size of the molecular or ionic species that can enter the pores of a zeolite is controlled by the dimensions of the channels. These are conventionally defined by the ring size of the aperture, where, for example, the term "8-ring" refers to a closed loop that is built from eight tetrahedrally coordinated silicon (or aluminium) atoms and 8 oxygen atoms. These rings are not always perfectly symmetrical due to a variety of effects, including strain induced by the bonding between units that are needed to produce the overall structure, or coordination of some of the oxygen atoms of the rings to cations within the structure. Therefore, the pores in many zeolites are not cylindrical.

Introducing 1,5 % of zeolite influences quails metabolisms positively which is proved by general albumin content, aspartat- and alanineaminotransferase and alkaline phosphatase in the poultry blood and liver.

The study of zeolite from Sokyrnytsy deposite influence eggs productivity is a perspective way of the research.

Key words: zeolite of domestic deposits, quail meat, quail eggs, enzyme activity, eco-friendly products.