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Table 1 Reaction to surgery and the percent of horses that needed supplemental anaesthesia for completion of surgery

From: Dissociative Anaesthesia During Field and Hospital Conditions for Castration of Colts

Protocol

Surgery score median (range)

Supplemental anaesthesia percent of horses receiving

Hospital – RZ

1.5 (1–2.5)

50%

Hospital – ARZ

3.5 (1–5) #

27% #

Hospital – ARBZ

3.5 (2–4.5) #

22% #

Field – ARBZ

5 (3–5) # *

0% # *

  1. Reaction to surgery was scored from 1 to 5, were 5 is no reaction to surgery. Romifidine and tiletamine/zolazepam (RZ); acepromazine, romifidine and tiletamine/zolazepam (ARZ); acepromazine, romifidine, butorphanol and tiletamine/zolazepam (ARBZ). Hospital = surgery performed under hospital conditions, Field = surgery performed under field conditions # = Significantly different from RZ, * = Field-ARBZ significantly different from Hospital-ARBZ.