PERFECTION OF THE YENISEI TYPE OF CATTLE RED AND WHITE BREED
Influence of crossing of animals of red and white breed of domestic selection with import breeds is investigated: Holstein red and white colour and red and white Swedish on meat and milk productivity. The circuit of perfection ofthe Yenisei type of cattle of red and white breed is offered, allowing to increase dairy efficiency at individuals I of generation on 5,8... 6,0 %, amount of dairy fat on 6,7... 9,1 %, dairy fiber on 5,7... 6,4 %.