Castration is a common management procedure employed in North American cattle production and is known to cause a pain response. The present study was designed to investigate the effect of unmitigated surgical castration on the electroencephalography (EEG) responses and plasma substance P (SP) concentrations in calves of different ages under the same experimental conditions. Thirty mal... https://www.nacrack.com/amazing-offer-Grand-Love-Reposado-Tequila-Red-Glass-Heart-save-extra/