"One hundred years ago, our native birds were threatened by human hunting but now the biggest hunters are rats, stoats and possums. We will change that."
Other key topics included climate change, ocean management, clean air, outdoor recreation, energy efficiency and waste minimisation.
When the floor was opened to discussion, some farmers expressed concern about the limit on nitrate emissions.
One said the strict limits were pushing the farming industry in Rotorua to extinction and many farmers were struggling to maintain their livelihood as their stock was decreased and land deemed undesirable for buyers. Mr McClay said that was an example of the Government having to walk a fine line between economic and environment policies.
"This is why National is working towards creating the balance between maintaining and growing the New Zealand economy, while protecting the environment we have been blessed with.
"We recognise what farmers do is very important and many of them care about the environment and do their bit, but others do less for the environment.
"What we want to do is stop the public blame of farmers as this will not fix the problem, it's about collaboration and compromise."