Gulzhan Kalenovna Mussayeva, Alikhan Meldebekovich Meldebekov, Nurgul Alikhanovna Meldebekova, Gulshat Imanzhankyzy Shaykamal, Batyrkhan Azimkhanovich Buralkhiyev, Nurkuisa Mirzabekovich Rametov and Kanat Zhumanov, 2023. Dairy Productivity of Holstein Cows of Different Genetic Lines in the Conditions of Kostanay Region of Kazakhstan. Pakistan J. Zool., 55: 1257-1265. 
DOI: https://dx.doi.org/10.17582/journal.pjz/20210818080851