The use of lupin variety “Deco” in the feeding of pigs

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The purpose of this research was to study the effect on the digestibility of dietary nutrients and livestock parameters of young pigs of different doses of an alternative feed source such as lupine grain of the variety “Deco” instead of full-fat soybeans in the composition of compound feed. The studies were carried out on young pigs of DanBred genetics under conditions of a pig-breeding enterprise. Clinically healthy pigs were selected for the research. The method of analogues was used when selecting animals into groups, taking into account age, live weight, sex, etc. Four groups of animals were formed to conduct the experiment. There were 48 pigs in each group. The duration of the experiment was 124 days. The control group of young pigs was fed compound feed with full-fat soybeans. Herdmates in the 1st experimental group were fed compound feed with 50 % of full-fat soybeans replaced with the variety “Deco” lupine, in the 2nd experimental group with 75 %, in the 3rd experimental group full-fat soybeans were completely replaced with lupine grain. In relation to full-fat soybeans lupine grain of the variety “Deco” contained more dry matter by 0,08 abs.%, crude protein by 2,45 abs.%, crude ash by 0,35 abs.%, nitrogen-free extractive substances by 2,38 abs.%, the studied amino acids by 1,75 abs.%. Partial or complete replacement of full-fat soybeans in the compound feed with the lupine variety “Deco” led to the increase in the digestibility of nutrients in the body of young pigs with the following results: dry matter was digested more by 0,41–1,15 abs.%, organic matter by 0,23–1,00 abs.%, crude fat by 0,17–1,52 abs.%, crude protein by 0,92–1,83 abs.%, crude fi ber by 2,04–3,21 abs.%, nitrogenfree extractive substances by 0,12–0,43 abs.% compared to the pigs of the control group. The use of nitrogen, calcium and phosphorus taken with compound feed in animals was greater in relation to analogues from the control group by 0,76–1,61 abs.%, 0,72–1,61 and 0,19–1,26 abs.%, respectively. At the age of 180 days, the live weight of pigs in the control group was 131,04 kg, and in the experimental groups it was 2,82–3,96 kg higher. There was the decrease in feed expenditures per 1 kg of live weight gain in animals of the experimental groups by 2,57–3,49 % in comparison with control analogues. In order to expand the feed supply in pig farming, increase the nutritional value of compound feed and reduce their cost, as well as increase the meat productivity of pigs we recommend input alkaloid-free lupine of the variety “Deco” into compound feed.