For citations:
Jumaguzin I.F., Aminova A.I., Sedykh T.A. Productive longevity and lifelong productivity of daughters of Holstein bulls-producers with different variants of kappa-casein genotype. Agrarian science. 2022;(1):60-63. (In Russ.) https://doi.org/10.32634/0869-8155-2022-355-1-60-63
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