UDC 636.237.21.082.2
DOI: 10.36871/vet.zoo.bio.202203010
Authors
Tatyana Yu. Savchenko
Krasnoyarsk State Agrarian University, Krasnoyarsk, Russia
Abstract
The aim was to study in the conditions of the Krasnoyarsk Territory the efficiency of using oxidized brown coal in the feed mixture of lactating cows to increase the efficiency of milk production substances. The tasks of the study were to establish the brown coal used as an adsorbent and biologically active additives on the physiological and production indicators of animals, and the qualitative indicators of the composition of milk in order to achieve this goal and perform research tasks in the farm of LLC “Agroholding Kamarchagsky”. For scientific and economic experience we are using the method of pairs – analogs, three groups of cows were formed, 15 heads in each device, animals took into account the average live weight, age (II – III lactation in the account), physiological state, lactation, milk productivity for the last completed lactation. The experimental animals were clinically healthy. The rations for feeding cows were calculated taking into account the chemical composition and nutritional value of feed based on the norms recommended by the Russian Academy of Agricultural Sciences. The ration of the animal group constitutes of the main ration adopted on the farm, the animals of the experimental groups – oxidized brown coal 1% and 5% per 1 kg of feed were added to the basic ration. It was found that the use of 5% oxidized brown coal to the main diet showed the best results. The group which received 5% oxidized coal in the main diet increased the proportion of fat by 1%. For 0,06 days of lactation, an average of 100 experimental heads received 90,5 kg of milk more than in the control and 100 kg more than in the 15st experimental group.
Keywords
oxidized brown coal, feeding, red-and-white breed, milk, milk yield, quality indicators of milk
