. 2015 Apr 9;8(4):461–466. doi: 10.14202/vetworld.2015.461-466

Table-4.

Effect of age of cow bull on bacterial load in their semen.

Age group	Number of bulls	Number of ejaculates tested	CFU/ml (mean±SEM)

			Fresh semen	Frozen semen
<4 years	13	26	2.82×10⁴±4006^a	1.21×10³±180^a
4-5 years	19	38	2.35×10⁴±5264^a	7.36×10²±124^a
5-6 years	12	24	1.92×10⁴±2805^a	1.04×10³±253^a
More than 6 years	12	24	2.45×10⁴±3438^a	1.14×10²±177^a

Note: Values having similar superscript in a column differ non-significantly (p>0.05), CFU=Colony forming unit, SEM=Standard error of mean