холмогорская порода

Rating assessment of breeding bulls of the Kholmogorskaya breed in terms of reproductive indicators in foreign and domestic breeding

Submitted by red on Sat, 11/06/2022 - 21:39

The article presents the results of rating assessment of breeding bulls of the Kholmogorskaya breed in terms of reproductive indicators in foreign and domestic breeding in the North-West zone of the Russian Federation. The studies were conducted on the basis of a rating developed in the Northwest Research Institute of Dairy and Grassland Economy. 765 daughters of 18 domestic breeding bulls and 14 of foreign breeding bulls were observed. The rating of breeding bulls is established on reproductive signs of daughters.

The interrelation between the higher nervous activity type of the Kholmogory breed cows and their milk productivity

Submitted by red on Wed, 27/12/2017 - 12:53

The presented work is the result of studying the influence of the nervous type of the Kholmogory breed cows on their milk productivity in a free stall housing system. These studies clearly demonstrate the advisability of selecting cows regarding their types of higher nervous activity. The average milk yield of animals with a balanced, strong and mobile type of higher nervous activity was 21% higher than in other animals which will make it possible to form more productive herds and increase milk production.

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