Live ex vessel MV Al Kuwait completed discharging sheep on Friday after a successful voyage to the Middle East.
The last of the sheep were unloaded in Kuwait on Friday morning, after the voyage which saw 28 mortalities - or 0.08 per cent - recorded.
Exporter Rural Export and Trading WA (RETWA) said the purpose-built vessel delivered excellent results as part of a well-planned consignment.
Importer Kuwait Livestock Transport & Trading chief executive Osama Boodai said the recent voyage was essential for Kuwait's food security, as families across the Middle East relied on high quality, fresh meat from Australian live sheep delivered to their markets.
"We accepted this consignment would incur significant financial losses due to an additional USD $90 a head costs," Mr Boodai said.
"Kuwait's people, like Australians, are not travelling as they normally would during this time of year, which has led to increased domestic demand for fresh food.
"Air freight carcases have been significantly reduced during COVID-19, further increasing the importance of this voyage."
RETWA managing director Mike Gordon said the exemption would not have been pursued if the science was not available to support good animal welfare outcomes.
"The comprehensive exemption process was drawn out," Mr Gordon said.
"The additional conditions added by the regulator created significant challenges to ensure confidence in the welfare of the livestock, which RETWA was able to fully comply with.
"We were disappointed with the last minute and unsuccessful appeal by activists against the exemption.
"This is another unfortunate example of attempts to disrupt the industry, paradoxically putting animal welfare at risk."
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The voyage departed Fremantle, WA, in cool conditions.
During transit of the equator, predicted monsoonal activity and winds kept wet bulb temperatures (WBTs) low.
Forecasts and daily reports were reviewed regularly by an independent panel of experts which included a meteorologist, animal physiologist and animal behavioural experts.
The voyage forecasts and conditions aligned with exemption predictions and science referred to in the exemption application.
RETWA said there were no reported mortalities associated with heat stress, but instead they were due to various causes including pneumonia, infection and injuries.
They said as anticipated, WBTs were elevated during the transit of the Straits of Hormuz and entry to the Persian Gulf, but the majority of sheep had increased respiratory rates to regulate their body temperatures.
"These respiratory rates rapidly decreased as the vessel entered cooler waters typical of the northern parts of the Persian Gulf with a dry heat and lower WBTs," Mr Gordon said.
RETWA said the veterinarian and stock people on board reported a successful voyage and good welfare outcomes.
They said there was significant handling of livestock prior to loading to meet additional regulatory requirements, which led to an increase in the number of animals requiring veterinary treatment early in the voyage.
KLTT currently has three livestock vessels approved for export of livestock from Australia.
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