. 2017 May 25;59:33. doi: 10.1186/s13028-017-0301-4

Table 4.

Number and proportion of the cows culled with mastitis as the reported culling reason in the study group and the control group, and the most common pathogens detected alone in the milk samples of the cows in the study group during the same year

	2010		2011		2012
	Number of culled cows	%	Number of culled cows	%	Number of culled cows	%
Study group	3048	50.1^a	4461	49.6^a	4599	47.9^a
CNS	581	19.1^b	949	21.3^b	866	18.8^b
Staphylococcus aureus	888	29.1^b	1383	31.0^b	1239	26.9^b
Streptococcus uberis	210	6.9^b	336	7.5^b	294	6.4^b
Streptococcus dysgalactiae	168	5.5^b	303	6.8^b	221	4.8^b
Corynebacterium bovis	143	4.7^b	225	5.0^b	197	4.3^b
Escherichia coli	148	4.9^b	238	5.3^b	222	4.8^b
Control group	7825	19.9^a	6953	18.0^a	6455	16.8^a

^aProportion of cows from the total number of cows culled and culling reason reported in study group and in control group, respectively

^bProportion of cows having the respective pathogen in their milk sample from the total number of culled cows in study group