Table 3.

Spearman's rank correlation coefficients between the mean relative abundance of the genera Sphingomonas, Halomonas, Methanobrevibacter, and Faecalibacterium and the sperm quality parameters of goat buck ejaculates.

	Sphingomonas	Halomonas	Methanobrevibacter	Faecalibacterium
VCL (μm/s)	0.189	0.003	0.102	0.003
VSL (μm/s)	0.411*	0.244	0.197	−0.371
VAP (μm/s)	0.375	0.206	0.195	−0.330
LIN (%)	0.459*	0.340	0.190	−0.555*
STR (%)	0.346	0.357	0.078	−0.482*
WOB (%)	0.442*	0.312	0.202	−0.551*
ALH (μm)	−0.464*	−0.416*	−0.194	0.567*
Apoptotic sperm (%)	−0.261	−0.288	0.194	0.380
PMI- a low MMP (%)	−0.637*	−0.384	−0.681**	0.217
PMI-AI with a high MMP (%)	0.579*	0.356	0.734**	−0.134

^*Indicates that the correlation coefficient significantly differs from zero (p < 0.05).

VCL, curvilinear velocity; VSL, straight line velocity; VAP, average path velocity; LIN, linearity index; STR, straightness index; WOB, wobble; ALH, amplitude of lateral head movement; apoptotic sperm, PI+ with low intensity; PMI- low MMP: plasma membrane intact sperm (PI-) with a low mitochondria membrane potential; PMI-AI with a high MMP, plasma membrane and acrosome-intact sperm (PI-/FITC-PNA-) with a high mitochondria membrane potential.