URT endoscopy | EQUINE
to yield an accurate result. They also need to be aware
that RLN is progressive and may occur in the career of
any race horse. In addition, there is some evidence that
RLN is heritable and early recognition may be important
in future breeding planning with affected and nonaffected
individuals (Gerber et al. 2015:390-397).
In conclusion, this study shows that RLN grading occurs
at the following rates in Thoroughbred yearlings at
premier public auction in South Africa: Grade 1: 84.04%,
grade 2: 14.49%, grade 3: 0.71% and grade 4: 0.76%.
The results are similar to that of an adult population of
actively racing horses examined in South Africa.
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• Volume 22 Issue 02 | June 2020 •
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