Table 3 Correlation matrix between oxidative profile and proteolysis regulator parameters in the seminal plasma of donkey stallions (n = 9).

From: Oxidative profile and protease regulator potential to predict sperm functionality in donkey (Equus asinus)

 

TAC

FRSA

TTL

TOS

NOx

AOPP

PA

APA

TP

FRAP

 + 0.934***

 + 0.580

 + 0.697*

−0.738**

 + 0.775**

 + 0.684*

TAC

 

 + 0.654*

 + 0.787**

−0.809**

 + 0.630

 + 0.780**

 + 0.746**

FRSA

  

 + 0.928***

 + 0.808**

 + 0.861**

 + 0.927***

 + 0.879***

TTL

   

−0.527

 + 0.838**

 + 0.720*

 + 0.938***

 + 0.934***

TOS

    

NOx

     

−0.596

−0.558

−0.513

AOPP

      

 + 0.727*

 + 0.867***

 + 0.894***

PA

       

 + 0.749*

 + 0.768*

APA

        

 + 0.917***

  1. FRAP: ferric reducing ability of plasma; TAC: total antioxidant capacity; FRSA: free radical scavenging activity; TTL: total thiol levels; TOS: total oxidant status; NOx: nitric oxide metabolites; AOPP: advanced oxidation protein products; PA: protease activity; APA: antiprotease activity; TP: total protein. *, **, ***: indicate a statistic significance for P < 0.05, P < 0.01 and P < 0.001, respectively; : indicate a tendency for P < 0.10.