Wood waste of forest industry of siberia for feeding cows

Full realization of genetic potential of productivity of livestock in the conditions of industrial technologies is impossible without using in its diets of various biologically active additives providing increase in productivity and standardization of indicators of homeostasis. The research has been conducted in "Breeding Farm Taezhny" Ltd, Sukhobuzimsky territory of Krasnoyarsk region. The influence of feeding coniferous flour and pine nut shells on milk productivity of black-motley breed cows at the age of the second calving has been studied. Three groups of 5 cows in each were formed. The period of the experiment lasted 100 days. As a result, the analysis of composition of the studied feed additives, milk productivity, hematological and biochemical blood tests were made. Milk yield of the cows receiving coniferous flour in addition to the main diet was higher than in the control group by 13.5 %, and the cows receiving a shell of pine nut – by 4.3 %, in terms of basic fat content by 22.7-15.7 %, respectively. The increase of milk productivity by adding the coniferous flour allowed reducing the cost of 1 kg of milk by 2.2 rubles or 13.1 %, increase profits by 9.442 rubles or 36.5 %.