Calvesʼ management conditions affect sperm count in adult bullsSnoj, Tomaž (Avtor) Blažič, Kaja (Avtor) Šehić, Nika (Avtor) Vake, Tilen (Avtor) Majdič, Gregor (Avtor) Artificial inseminationbullmaternal separationsemen parametercattlemaleEarly maternal separation may have long-lasting physiological effects on different organ systems. Although long-lasting effects of early maternal separation are mostly studied in connection with the development and function of the central nervous system hypothalamic–pituitary–adrenal axis, animal health, behaviour and productivity, there is a lack of information about its impacts on the reproductive system. In the dairy industry, calves are often separated from mothers 1 or 2 days after birth and are not nursed. In the present retrospective study based on data from an artificial insemination (AI) centre, we compared semen parameters and fertility in bulls that were separated from their mothers one day after birth with the semen parameters of bulls that remained with their mothers and were nursed for approximately 2 months. Semen parameters were followed in 3 consecutive years in 52 maternally separated and 22 nursed bulls.20202021-01-25 12:22:09Članek v reviji124472UDK: 636.2.09:618ISSN pri članku: 1751-0147DOI: 10.1186/s13028-020-00563-xCOBISS_ID: 39466243OceCobissID: 515671577sl