Tapping- it is rather an ancient form of forest management which represents getting turpentine (resin) from growing trees. The greatest practical importance has tapping of softwood that is mainly represented by pine stands. Resin of pine is used in dozens of production types and leading countries of the world, which include Russia, are the center of its harvesting and processing. The North of the country (Arkhangelsk Region) is its birthplace and the leading base of tapping production in Russia.

The article gives the results of methane-containing feed additive use on productive and reproductive characteristics of dairy cows, as well as physical and chemical, and technical properties of milk. Feeding 15 gr of Smartamine feed additive per a head made an increase in milk yield capacity by 13% in keeping the quality of obtained products, as well as optimization of reproductive abilities of cows and their health state.

The research has been organized at “Experimental farm “Karavaevo” in 2015. Cows after re-selection exceed other selection types cattle in milk productivity 133kg(Р<0,001) during the 3-rd and more lactation period and 213 kg (Р<0,001) in the highest lactation time. From 70 re-selection cows 33(47%) have milk productivity more than 8000 kg during 305 lactation days. It has been noticed high breed value of bulls: Krik 9194, Ryadoc 3023, Bushuy 2726 Master›s relative 106902, Spike 5169 Leyrd›s relative group 71151 and Lednik bull 3518 Ladka›s line КТКS-253.

Research works on the consequences of the European beaver’s reacclimatization are becoming highly demanded lately. Moreover, the economic assessment of plant resources (defining their value in money terms) is gaining great practical importance. In this work silvicultural and economic assessment of the European beaver’s activity has been given. The activity of the European beaver causes silvicultural and economic damage to forestry. In addition, weakening the forests’ protective function takes place.