Calves’ management conditions affect sperm count in adult bulls

摘要

Both ejaculate volume (a) and total sperm count (c) differed between groups with regards to the management conditions and age (**P < 0.01 (management conditions); ###P < 0.001 (age) for ejaculate volume and *P < 0.05 (management conditions) and #P < 0.05 (age) for total sperm counts). In both parameters the difference was present in 3 and 4 years old bulls but not in 2 years old bulls with nursed bulls having larger ejaculate volume and higher total number of sperms in comparison to maternally separated bulls. Concentration of sperms in ejaculate (b) did not differ with regard to breeding conditions, but was significantly different with regard to the age (###P < 0.001)