Abstract
The article shows the milk productivity of mares of the Novoaleksandrovsk heavy draft breed of different lines. It was found that the milking herd mares belong to the six main lines of the Novoaleksandrovsk heavy draft breed, most of all the number of mares belongs to the Tantalus line. Based on the primary zootechnical documentation of the stud farm, the indicators of herd reproduction for 2009, 2010 and 2011 were analyzed. The highest milk production rates of mares of the Novoaleksandrovsk heavy draft breed of the Dubrovsky stud farm were among the representatives of the Tantalus (Bingo, Jacqueline), Captain (Jojoba, Rezba, Fibra) and Koketlivy (Travka, Roslinka) lines, whose average milk productivity was from 1825 to 2600 liters of milk per lactation. The highest average milk yield was observed in mares of the Kapitan and Koketlivy lines and amounted to 1809.02 liters and 1639.64 liters, respectively.
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