Effectiveness of milk production when using by cows mineral and energy complex Reactor

Abstract

The Vologda region is an area of developed dairy cattle breeding and the organization of comlete-fledged feeding of highly productive cows requires a special approach due to difficult soil and climatic conditions, which causes an insufficient balance of feed and rations. This paper has been solving the problem that is important for the region. The purpose of this work was to study the effectiveness of milk production with the use of the mineral and energy complex Reactor in feeding of cows. Researches on the effectiveness of using the feed additive Reactor have been carried out in the APC “Verny” in the Ustyuzhensky district in the Vologda region. In order to implement the set tasks 4 groups of cows of Black-and-White breed have been formed based on the principle of pairs-analogues, taking into account their age (2,4 lactation), live weight (540 kg), milk yield for 305 days of the last lactation (6250 kg) and physiological state. Cows of all groups have been received the main ration, but the animals of the 1st experimental group in the fresh period and the cows of the 2nd and 3rd experimental groups in the transit period have been additionally fed the mineral and energy complex Reactor. As the result of researches, new data on the zootechnical and economic feasibility of using this feed additive in the feeding of cows with the milk yield of 6000–7000 kg per lactation have been obtained, which allows identifying additional reserves for increasing milk yield with rational use of feed resources. The level of profitability of milk production for the period of increasing the milk yield in the control group was 10,4 %, and in the experimental group – 15,0; 16,8 and 20,7 %, respectively, i.e. there is the increase in this indicator by 1,5–2 times if the feed additive Reactor is used before and after calving.