Relação entre a hiperqueratose dos tetos e a ocorrência de mastite sub-clínica

Abstract

The objective was to evaluate the effects of teat-end callosity on subclinical mastitis in cows primiparous and pluriparous. Were analyzed 51 dairy cows in the herd in the region agreste in the state of Rio Grande do Norte. Each cow was first evaluated in the score teat-end, then held the score of subclinical mastitis, using the California Mastitis Test (CMT). For the parameters of teat-end callosity ceilings and subclinical mastitis was performed Pearson correlation analysis. The analysis of variance and mean comparison was used considering the effect of parity. The analysis indicated a positive correlation between the scores of the teats and CMT (P≤0.001). There was no effect of parity on the mean score of the teats, but for the average CMT score, primiparous cows had lower mean (P≤0.001). What indicated greater severity of subclinical mastitis in pluriparous cows.