Scott Morrison has pinned responsibility for animal welfare during the drought on state governments.
The prime minister is pushing back against calls to pump Commonwealth cash into freight and livestock food.
"If there is to be additional fodder and freight subsidies for those breeding herds, then that is what the state governments are directly responsible for," Mr Morrison told Sydney radio 2GB on Friday.
"Our job is to look after the income support to the farming families themselves."
Mr Morrison said the federal government would continue to ramp up support for drought-stricken farmers.
"I wish and have prayed that it would have rained by now, but it hasn't and it's unlikely that it will very soon," he said.
"Let's hope it will in the not too distant future. But we will keep responding, we will keep adding things."