Zobrazeno 1 - 5
of 5
pro vyhledávání: '"M. V. Zelepukina"'
Publikováno v:
Russian Agricultural Sciences. 47:411-417
The surveys were carried out in order to determine the rationale for improving the Yaroslavl cattle breeding stock with Holstein bulls. The cows of the Yaroslavl breed (n = 458) and their peers with percentage of Holstein blood from 38 to 50% (n = 16
Publikováno v:
Rossiiskaia selskokhoziaistvennaia nauka. :57-61
Publikováno v:
Russian Agricultural Sciences. 46:376-380
A survey was performed to find out the methods for improving the Holtenized Simmental cattle through selective breeding with Montbeliarde bulls. The objective of the survey was to identify the behavior patterns for the key positions, including growth
Publikováno v:
Russian Agricultural Sciences. 45:197-201
The effects of the optimal liveweight values for heifers at the final stage of puberty and the first service conception on the cow lifespan, milk yield, and welfare status over three lactations was estimated. The survey was performed with domestic Bl
Publikováno v:
Rossiiskaia selskokhoziaistvennaia nauka. 1:46-49
The effects of the optimal liveweight of heifers, reaching the age of completed puberty and first conception, on the lifespan, the milk yield, and the welfare status of cows after three lactations have been studied. The survey was performed with the