Prospects for application sapropel in feeding of cows

Abstract

Numerous studies have shown that sapropel is an effective source of macro-and microelements, as well as biologically active substances. There are about 3 million lakes on the territory of Russia, where sapropel reserves are estimated at 250 billion tons. There are 497 lakes on the territory of the Tyumen region, the estimated reserves of sapropel in them are 1398,7 million tons. The Tyumen region is a biogeochemical province for all normalized trace elements. Biologically active compounds obtained from natural raw materials, including normalized trace elements in organic form are the most promising and safe. Under the inviroments of the Tyumen region, such natural raw materials can be sapropels. The study of the effectiveness of the use of sapropels and their influence on the metabolism and milk productivity of cattle is an urgent topic. The purpose of the research was to study the influence of sapropel lake Nepryak on milk productivity indicators and the biochemical composition of the blood of cows. For the experiment 3 groups of cows have been formed (a control group and two experimental ones) based on the principle of pairs of analogs. Cows of the 1st experimental group have been got in the ration of 300 g of sapropel per head/day, 2nd experimental – 500 g/head/day. Cows of the control group did not receive sapropel in the ration. It has been found as the result of research that the use of sapropel lake Nepryak in feeding of cows in doses of 300 and 500 g/head/day had the positive influence on their milk productivity. At the same time, it is most effective to feed sapropel at the dose of 300 g/ head/day.