"As farmers they're focused on protecting and enhancing their farm land for the future, investing in genetics and they understand what feed they need to grow - better grass, more clover and fodder crops."
Harris, from Beef + Lamb New Zealand, puts the sheep industry's success down to all the elements coming together.
The East Coast of the North Island represents 25 per cent of New Zealand's sheep numbers, with Hawke's Bay the largest producing region with 40 per cent of the lamb and mutton kill.
In just 10 years lamb productivity has increased 30 per cent and export prices are expected to triple this year from $53 to $130 and climbing.
Despite New Zealand's massive and continual drop in sheep numbers from 70 million in the 1990 to 27 million, the average kill weight is now 18.6kg, compared with 13.4kg in the 1990s.
New Zealand's trade envoy Mike Petersen, who farms in Waipukurau, agrees: "All the stars are aligned and we have an industry doing phenomenally well."
Along with the impressive on-farm efficiency gains, Petersen credits the significant advances by meat processors and exporters through market diversification, adding value and extracting greater yields.
"Processors have increased the shelf life of product and diversified markets to ensure they're maximising value of every component from a carcass. There's so much value added by working closer with customers using chilled technology and expanding our range of meat products, which are in huge demand globally.
"It's a highly sophisticated business."
Petersen says New Zealand can't underestimate the influence of China, which is one of the greatest protein consuming markets in the world.
"There's been incredible and sustained demand for all cuts of sheepmeat from China with the impact of a 30 per cent cull of the pig herd following the outbreak of African swine fever."
Petersen also sees an opportunity for sheep to play a greater role in nutrient management, if profitability continues but that would depend on improving wool returns.
"We could see a changing carbon footprint, as more farmers incorporate higher sheep stock numbers, rather than in cattle into farming systems."