Characteristics of Superior Breeding Material on the Basis of the Promising Breeding Families Study
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. The article presents the superior breeding material of the herd on the basis of eighteen promising breeding families, established as a result of the analysis of genealogies of high-yielding record-holder cows. Outstanding families that persistently transmit their hereditary qualities to offspring have been identified: the Aprelka`s 681, the Medichka`s 1084, the Charlotka`s 1184, the Oda`s 1091, which represent breeding material for producing high-value heifers and bulls of domestic selection.
Characteristics of Superior Breeding Material on the Basis of the Promising Breeding Families Study
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. The article presents the superior breeding material of the herd on the basis of eighteen promising breeding families, established as a result of the analysis of genealogies of high-yielding record-holder cows. Outstanding families that persistently transmit their hereditary qualities to offspring have been identified: the Aprelka`s 681, the Medichka`s 1084, the Charlotka`s 1184, the Oda`s 1091, which represent breeding material for producing high-value heifers and bulls of domestic selection.
The impact and results of using sires in dairy cattle populations in the Vologda region
Studies were conducted on controlled populations of dairy cattle of
Ayrshire, Kholmogory, Yaroslavl, black-and-white breeds of breeding farms in the
Vologda region. It has been revealed that the sires of domestic selection have a greater
degree of influence on the productive indices of their daughters than foreign ones do.
The calculation of the breeding value of bulls in terms of their daughters’ productivity
has been carried out, and on the basis of a comparative analysis the best producers
in the context of selections having the greatest impact on the productivity indices of
descendants have been determined.
The impact and results of using sires in dairy cattle populations in the Vologda region
Studies were conducted on controlled populations of dairy cattle of
Ayrshire, Kholmogory, Yaroslavl, black-and-white breeds of breeding farms in the
Vologda region. It has been revealed that the sires of domestic selection have a greater
degree of influence on the productive indices of their daughters than foreign ones do.
The calculation of the breeding value of bulls in terms of their daughters’ productivity
has been carried out, and on the basis of a comparative analysis the best producers
in the context of selections having the greatest impact on the productivity indices of
descendants have been determined.
