As is so often the case, poor animal welfare goes hand in hand with poor human welfare. Live ex is no exception. The extended footage used for the 60 Minutes show, demonstrated workers with no protective clothing having to remove thousands of dead sheep bodies (bit by bit) in the same heat conditions that killed the animals. Not only would the conditions have been unspeakable but some of these animals will have had salmonellosis in addition to heat stress....salmonellosis is a zoonotic disease (ie people can catch it from animals).
In a study between April and October 2004, it was shown that at least 33% of voyages had significant heat stress (McCarthy 2005 Pilot Study).....thus it is likely that these poorly paid 3rd world seafarers are exposed to these conditions on at least 33% of voyages.
MUA has spoken up on this issue. See: https://maritime-executive.com/article/poll-a-majority-of-australians-reject-live-export#gs.Tyx78fUmaritime-executive.com/article/poll-a-majority-of-australians-reject-live-export#gs.Tyx78fU