лактация

Characteristics of Superior Breeding Material on the Basis of the Promising Breeding Families Study

Submitted by red on Sat, 11/06/2022 - 20:44

Families represent the highest form of breeding work in dairy cattle breeding, which requires a deep study of breeding records of animals up to 10 generations or more, taking into account the genealogical affiliation. Therefore, the article has theoretical and practical significance in breeding programme. As a result of the long breeding work of specialists of OOO (LLC) “Zazerkal`e” of Gryazovets District in the Vologda Region, a highly productive herd of black-and-white breed has been created.

Influence of energy supplement «Avatar» on reproductive quality and milk productivity of cows

Submitted by red on Wed, 06/11/2019 - 10:22

A scientific-economic experiment was conducted on highly productive black and white cows by the method of analog groups on the basis of one of the best farms of the Vologda region to identify the effectiveness of energy supplement “Avatar” produced by “AgroBalt Trade”. The experiment was conducted on cows in a transit period. Different dose combinations were tested. The effectiveness of the energy supplement “Avatar” on milk production at a dose of 500 g before calving and 700 g after calving was revealed. The economic efficiency of the supplement was 80.92 rubles per cow per day.

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