THE GROWTH AND DEVELOPMENT OF YOUNG HORSES, RUSSIAN HEAVY DRAFT BREED WHEN INCLUDED IN THE DIET OF FLAX MEAL
Currently, the Russian heavy-duty breed is the most com-mon heavy-duty breed in Russia. This breed is bred in almost all regions of the Russian Federation, with the exception of the Central Federal District, where it can not compete with large heavy trucks (Soviet and Vladimir). This breed has good meat qualities, which opens up the prospect of its use in productive horse breeding. When fattening young horses well two processes: accelerated growth and increased final live body weight. To do this, the diet should contain the necessary amount of energy. Flax cake has a high energy value: 1 kg of cake contains 1.27 k. units., 13.73 MJ and 287 g of digestible protein, as well as a rich composition of trace elements and vitamins. In this regard, the purpose of our research was to study the effect of flax cake in the diets of young horses of Russian heavy breed on the growth of live weight, on the performance of the main measurements and body com-position indices. For the experiment, young horses, Russian heavy draft breed at 9 months of age after weaning were divided into three groups of 9 sows in each on the prin-ciple of analogues with regard to gender, age, productivity, origin, physiological state and body weight. Experience was carried out in the conditions of LLC Log-inovo of the Makushinsky district of the Kurgan region in the winter-stall period. The largest gross increase over the period of experience was in animals of the experimental group 2-18.23 kg (p<0.001) or 20.82% more than in the control group. In 1 experimental group these indices exceeded the control by 9.00 kg (P<0.95) or 11.49%. Also in all age periods foals of experimental groups exceeded the control peers on key measurements and indexes of physique. In General, the use of flax meal in the diet of horses of Russian heavy breed had a positive impact on the growth of live weight of young animals, led to an increase in the basic measurements and body indices. At the same time, the best results for all the studied parameters were in experimental animals, in the diet of which flax meal was added at a dose of 500 g per head per day.