Shirokova, Nadezhda Vasilievna, Vladimir Khristoforovich Fiodorov, Ivan Fiodorovich Gorlov, Marina Ivanovna Slozhenkina, Elena Yurievna Anisimova, and Natalia Ivanovna Mosolova. 2026. “Prolactin Gene Diversity and Its Influence on Milk Yield Traits in Ayrshire Dairy Cattle from Southern Russia”. Journal of Advanced Veterinary and Animal Research 12 (4):1125-31. https://banglajol.info/index.php/JAVAR/article/view/88508.