TY  JOUR
TI  Changes in the indicators of own productivity of Holstein bulls depending on the season and age
KW  bull
KW  sperm production
KW  volume of ejaculate
KW  season of the year
KW  age of the bull
JO  Agrarian Bulletin of the
AU  Naryshkina, E.N.
PY  2021
IS  0
PB  Ural State Agrarian University