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Akbaş, A., Sari, M., Usta, Z. and Saatci, M. 2022. A Field Study on Fertility Traits of Holstein Heifer and Cows Artificially Inseminated with Sexed Belgian Blue Sperm and Growth Characteristics of Crossbreed Belgian Blue × Holstein (F1) Male Calves . Proceedings of the Bulgarian Academy of Sciences. 75, 7 (Jul. 2022), 1072–1081. DOI:https://doi.org/10.7546/CRABS.2022.07.16.