Table 1.

Analysis of variance results for the effect of bacteriological status¹ for the investigated traits

Item2	Bacteriological status		Contrast F-value
	F-value	P-value	Negative vs. positive	Strep. agalactiae vs. Prototheca
SCC traits
SCS	22.63	<0.001	38.77***	4.11
DSCC, %	4.39	0.020	4.29*	3.77
log PMN-LYM count	21.18	<0.001	35.54***	4.48*
log MAC count	22.54	<0.001	40.30***	2.75
Leukocyte populations3
Total WBC, %	16.67	<0.001	32.81***	0.07
PMN, %	10.23	0.001	9.86**	8.92**
MAC, %	11.98	0.001	2.45	20.20***
TL, %	4.14	0.024	2.36	6.57*
THL %	4.23	0.022	1.48	7.48**
CTL %	3.07	0.059	—	—
BL %	1.23	0.303	—	—
PMN+TL, %	10.24	0.001	17.53***	1.88
(PMN+MAC):TL, %	5.30	0.020	0.33	9.89**

¹Bacteriological status was classified into 3 classes: negative, positive for Streptococcus agalactiae and positive for Prototheca.

²SCS = somatic cell score expressed as log₂(SCC/100,000) + 3; DSCC = differential SCC; logPMN-LYM count = polymorphonuclear neutrophils-lymphocytes count expressed as log₂[(PMN-LYM count)/100,000] + 3; logMAC count = macrophage count expressed as log₂(MAC count/100,000) + 3; total WBC = total white blood cells, the sum of all individual leukocyte population percentages; BL = B lymphocytes; THL = T-helper lymphocytes; CTL = cytotoxic T lymphocytes; TL = total T lymphocytes.

³Leukocyte populations are expressed as percentage of total events acquired by the cytofluorimeter.

^*P < 0.05

^**P < 0.01

^***P < 0.001.