Natural feed additive is made on the basis of bottom sediments of the steppe reservoirs of the Krasnodar Territory and is a dry powder of a grayish tint. Mineralization of local bottom sediments is 6.5 g / kg, calcium content is 29.7 g / kg, macronutrients from 1.04 to 25.8 g / kg, trace elements from 0.03 to 0.7 g / kg. The medium reaction is from neutral to slightly alkaline. Using sapropel feed additives (SFA), it was possible to increase the gross live weight gain of broiler chickens by 1.7-2.0% while reducing feed costs per 1 kg of gain by 0.5%. All internal organs of the poultry were developed within normal limits. There was profitability increase by 1.1% in growing broilers, when using sapropel feed additives in full feed. Blood biochemical values were at an optimal level. Therefore, this feed additive can be considered as a natural feed ingredient; however, it is necessary to further develop a complex feed additive from natural components that partially or completely meets the requirement of the poultry in biologically active substances and micronutrients.

The paper discusses the effect of a newly developed complex feed additive Grainbiosorb used in complete feed on livability, age of first egg laying, egg productivity, and feed consumption for the production of 1 dozen eggs of laying quails of the Texas white broiler breed. The scientific experiment was carried out in the experimental vivarium of Krasnodar Research Centre for Animal Husbandry and Veterinary Medicine according to the standard technique recommended by the Federal Scientific Center “All-Russian Research and Technological Institute of Poultry” of Russian Academy of Sciences, (Sergiev Posad, 2013). The developed complex feed additive Grainbiosorb consists of fermented brewer’s spent grain, a mineral sorbing complex and probiotic microorganisms. Brewer’s spent grain is pre-fermented with probiotic bacterial concentrate, consisting of lactic acid, and propionic acid microorganisms. The use of fermented brewer’s spent grain in combination with a mineral complex can solve the problems of metabolism, digestion, exposure to heavy metals and thereby increase productivity and contribute to obtaining safe poultry products. The livability of the quail population in experimental and control groups was the same and amounted to 90.0%. The quails of the first group laid the first egg at the age of 44 days, while the quails of the second group at the age of 42 days. Gross egg production for the period of the experiment per the initial laying quail and the egg production for the average laying quail increased in the experimental group relative to the control by 3.8%. The intensity of egg production in the experimental group increased by 2.3 abs. % relative to that in the control group. Feed consumption for the production of 1 dozen quail eggs decreased by 5.5% in the experimental group, relative to the control.

The research was aimed at studying the efficiency of using functional feed additives based on fermented brewer's grains with vegetative filler and an adsorbent in combined feeds for broiler chickens. The use of the developed biological product resulted in increasing the live weight in the second group of chickens by 8.0 %, the average daily live weight gain – by 8.2 %, while reducing the feed used per unit of the product by 8.0 %. The results of analyzing the contents of the microflora of the caeca in the intestine showed a reduction of the common microbial number in the experimental group of chickens from 2x109 to 3x107 and an increase in the number of lactobacilli from 1x106 to 6x107. Therefore, the efficiency of the composite biological product in feeding broiler chickens has been proven.

The studies were carried out in the experimental housing room of FSBSI KSCZV on quails of Texas white breed. The purpose of the scientific and economic experience was to study the effectiveness of using a feed additive based on modified beer pellets in mixed feeds for young quail. Feeding of quail chicks was divided into 3 phases - "Start" - from daily to 14-day-old age, "Growth" - from 15 to 28-day-old age, and" Finish» - from 29 to 56-day-old age. The experimental group received an additive in a dosage of 1.5% by weight of complete feed. The research was conducted according to the" Methodology of scientific and industrial research on poultry feeding» (2000). During the experiment live weight, liveweight gain, the safety of poultry, cost of feed was determined. At the end of the experimental period, the economic effectiveness was studied. As a result of studies it was found that the live weight of the birds in the second experimental group significantly increased by 8.6% at 14 days age (p<0.01) and at 28-day age – 6.4% (p<0.01) in 42-day – by 4.7 % (p<0.05), daily gain over the entire period was higher in the experimental group for 4.6 %. The use of the additive did not affect the safety of the bird. Feed costs per 1 kg of growth were lower in the second group by 5.0 %, compared to the control. The cost of 1 kg of live weight gain of quails was less than the control indicator in the experimental group by 2.6 %. Also introduced feed ingredient allowed to get 5.08 rubles of additional profit from 1 head.

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