Milk productivity of Red-and-White cattle with different productive use

Abstract

In the article, the authors studied the structure of the herd and the signs of milk productivity of Redand-White cattle with different durations of production use. It was found that cows dominate the herd structure under three calves (70.25%). As cows age into calves of 4 to 10, the cow population decreases per lactation by 0.7 to 4.27%. The most numerous is the group of cows at the age of 1 calving (33.68%), and the least numerous is the group of cows at the age of 10 calvings (0.55%). The dynamics of milk yield in cows was positive from the 1st to the 3rd lactation by 5.6%. With increasing age in lactations 4 to 7, milk yields decreased by 0.48-9.9%. The authors noted the highest milk yield in cows of the 3rd lactation (6580 kg), which exceeded the average milk yield for the herd by 9.1%. The minimum milk yield was in cows of the 10th lactation (5637 kg), to the herd’s milk yield less by 6.6%. The fat content in milk was, on average, 0.35 percentage points higher than the breed standard, or 9.2%; the protein content in milk was 0.13 percentage points higher, or 4.3%. The degree of realization of the productive potential of cows depends on the level of productivity obtained over their entire production period. The average milk productivity of red-and-white cows in the breeding herd over the past three years was 6048 kg with productive use of 2.8 lactations. The average milk yield per cow during the effective period was 16934 kg, while the possible 24192 kilograms, 7258 tons of milk, were missed, worth 214546 rubles. The selling price is 29.56 rubles/kg of milk. For all controlled livestock, there was an average annual shortfall of 105386 ct of milk worth 3115210 rubles.