Retrospective study on the incidence of exercise-induced pulmonary haemorrhage (EIPH) in racing thoroughbreds in Selangor Turf Club (STC) from September 2017 to August 2022

Tan, Jin Yu (2022) Retrospective study on the incidence of exercise-induced pulmonary haemorrhage (EIPH) in racing thoroughbreds in Selangor Turf Club (STC) from September 2017 to August 2022. [Project Paper] (Submitted)

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Abstract

Exercise-induced pulmonary haemorrhage (EIPH) is a common respiratory condition in racehorses but the risk factors are not clearly defined. The aim of this retrospective examination was to identify the association of the occurrence of EIPH in racing Thoroughbreds with age, race distance, average ambient temperature and relative humidity. The performance of the EIPH-positive horses was also examined. A total of 472 flat-racing Thoroughbreds with EIPH in the record of Selangor Turf Club (STC) from September 2017 to August 2022 were analysed descriptively and tested using Spearman’s rho correlation. All horses diagnosed with EIPH post-race had epistaxis or respiratory distress associated with pulmonary haemorrhage. The result revealed significant associations (p<0.05) between EIPH with race distance (r=-0.327) and average ambient temperature (r=0.194). No correlation was identified between EIPH with age and relative humidity. EIPH was shown to impair the overall racing performance of the horses. More than half (56.03%) of EIPH-positive horses experienced a decrease in rating. For the finishing position, only 6.56% of the 442 horses won the first three placing in the race with the incidence of EIPH. With regards to recurrence and deletion, 36.23% of the horses had recurrent EIPH and 60.59% were deregistered from horse racing within the 5 years of study duration. In conclusion, proper management of the risk factors identified in the present study may be helpful in reducing the frequency of EIPH, which clearly compromises racehorse performance and has financial implications for the horse racing industry.

Item Type:	Project Paper
Faculty:	Faculty of Veterinary Medicine
Depositing User:	Ms. Nordeena Abdul Aziz
Date Deposited:	29 Feb 2024 08:08
Last Modified:	07 May 2024 08:10
URI:	http://psaspb.upm.edu.my/id/eprint/1655

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