Influence of bulls on the reproduction indicators of daughters taking into account their productivity
The main objective of the development of dairy cattle breeding is to increase
the breeding productive characteristics, taking into account the preservation of the
reproductive qualities of animals. The research was conducted on the basis of data
from the breeding plant for black-and-white cattle breeding OOO “Zazerkalie” in the
Vologda region. Bulls-improvers were determined by the complex of selected traits,
taking into account the linear affiliation: Meson 3097402441; Retirement 11720463 of
the line of the R. Sovering (1st lactation of daughters). It is recommended to use the
best breeding material (seed of breeding bulls, breeding young), which allows the next
generation to get a reliable improving effect on the selected characteristics.
Influence of bulls on the reproduction indicators of daughters taking into account their productivity
The main objective of the development of dairy cattle breeding is to increase
the breeding productive characteristics, taking into account the preservation of the
reproductive qualities of animals. The research was conducted on the basis of data
from the breeding plant for black-and-white cattle breeding OOO “Zazerkalie” in the
Vologda region. Bulls-improvers were determined by the complex of selected traits,
taking into account the linear affiliation: Meson 3097402441; Retirement 11720463 of
the line of the R. Sovering (1st lactation of daughters). It is recommended to use the
best breeding material (seed of breeding bulls, breeding young), which allows the next
generation to get a reliable improving effect on the selected characteristics.
The influence of cows’ breeds on the quality indicators of milk
In modern conditions of breeding dairy breeds of cattle, an important
element of the study is the influence of breed and quality indicators of milk. The studies
were carried out in 2019 on the basis of the SHPK “Plemzavod Maysky” Vologda region
on the quality indicators of milk from Ayrshire and black-and-white cows in the amount
of 15663 milk samples. Based on the results of milk samples, a research database on
milk quality indicators was formed and a comparative characteristic was carried out
taking into account the season of the year. As a result of the research, all analyzed
breeds have high quality indicators of milk that meet the requirements of State Standard
throughout the year.
The influence of cows’ breeds on the quality indicators of milk
In modern conditions of breeding dairy breeds of cattle, an important
element of the study is the influence of breed and quality indicators of milk. The studies
were carried out in 2019 on the basis of the SHPK “Plemzavod Maysky” Vologda region
on the quality indicators of milk from Ayrshire and black-and-white cows in the amount
of 15663 milk samples. Based on the results of milk samples, a research database on
milk quality indicators was formed and a comparative characteristic was carried out
taking into account the season of the year. As a result of the research, all analyzed
breeds have high quality indicators of milk that meet the requirements of State Standard
throughout the year.
Rating of Ayrshire servicing bull estimation according to selection features
Estimation of servicing bulls according to the offspring quality is one of the main items in selection process, which allows determining the strategy of herd improving in breeding, productive and conformation features. The research has been carried out in the Ayrshire cattle herd in agricultural production cooperative Mayskiy Plemzavod, the Vologda District, the Vologda Region. The study results has allowed ranking servicing bulls according to the daughters’ selection features and the bull named Volan 106202505 has been established to be the winner in this rating (its daughters’ milk yield of 8125kg being the highest one, strong body and milking conformation form). It is advisable to use servicing bulls of a high selection rating in the breeding stock and their offspring for the herd reproduction, which will increase productivity and improve conformation characteristics of a new generation animals.
Rating of Ayrshire servicing bull estimation according to selection features
Estimation of servicing bulls according to the offspring quality is one of the main items in selection process, which allows determining the strategy of herd improving in breeding, productive and conformation features. The research has been carried out in the Ayrshire cattle herd in agricultural production cooperative Mayskiy Plemzavod, the Vologda District, the Vologda Region. The study results has allowed ranking servicing bulls according to the daughters’ selection features and the bull named Volan 106202505 has been established to be the winner in this rating (its daughters’ milk yield of 8125kg being the highest one, strong body and milking conformation form). It is advisable to use servicing bulls of a high selection rating in the breeding stock and their offspring for the herd reproduction, which will increase productivity and improve conformation characteristics of a new generation animals.
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.
