I would imagine it would depend on whether the animal is stunned prior to having their throat cut. According to the RSPCA's website
It goes on to sayThe only difference with halal slaughter is that it uses a reversible stunning method, while conventional humane slaughter uses an irreversible stunning method.
Halal slaughter in overseas abattoirs often does not include stunning - this is the key difference between halal slaughter in Australia and many other countries.
However, there are instances where the relevant Australian state or territory meat-inspection authority can approve an abattoir for ritual slaughter without prior stunning - either halal or kosher (Jewish slaughter) - for the domestic market. These are effectively exemptions to standard Australian slaughter practice. The proportion of animals slaughtered under these exemptions is very small, but nevertheless that any animals are slaughtered without stunning is of concern to the RSPCA.
The RSPCA is strongly opposed to all forms of slaughter that do not involve prior stunning of the animal.
The RSPCA policy on ritual slaughter is clear: slaughter without prior stunning is inhumane and completely unnecessary. The RSPCA is opposed to inhumane methods of killing and continues to promote this view to governments and the public.
So if we're talking about slaughter without stunning I'll stick with the RSPCA's line and be strongly opposed.