In modern poultry farming, special attention is paid to the diet preparation that will not only fully meet the physiological needs of highly productive poultry, but will also contribute to ensuring the greatest economic benefit. For this purpose, constant research is conducted aimed at studying the effect of various additives that can reduce the diet cost. Among such additives, natural zeolites can be noted, which have proven their usefulness when introduced into the poultry diet in many previous studies. It should be noted that zeolites of different deposits can differ greatly in their chemical composition. In addition, it should be borne in mind that experimental data obtained in the 1980s are not always correct, in relation to the current stage of animal husbandry development in general, and poultry farming in particular. Today, other poultry crosses are used, and the compound feed formulations have changed accordingly. New types of feed additives have appeared. The aim of the work was to study the effect of different feeding dosages of the Wanginsky deposit zeolites on the digestibility of the main organic substances of compound feed, productivity and quality of the products obtained from laying hens of the Haysex Brown cross. To do this, an experiment was conducted in which three experimental groups of hens, selected according to the analogues pair’s method were fed different amounts of zeolites. In the first experimental group, the amount of fed zeolites was 3 % of the dry matter of the diet, in the second and third – 5 % and 7 %, respectively. The conducted studies have shown that the experimental groups outperform the control group in terms of live weight gain, egg production and its intensity. This is due to the better digestibility and accessibility of organic nutrients in the diet in the control groups. At the same time, zeolites did not affect the average weight of eggs, but due to high egg production, the gross amount of egg mass obtained in the second experimental group turned out to be maximum and exceeded the control group by 9.98 %.

Sharvadze Roini L., Penzin Andrey A., Yuetszyue Chen

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