A combination of tighter mutton supply from Australia and New Zealand, who contribute the majority of international sheepmeat trade, and growing global demand is expected to continue to drive an increase in the average export value of mutton, which influences lamb prices.
China's demand for red meat from all sources is expected to continue to grow, but demand for lamb, mutton, and beef is also expected to remain strong in all New Zealand's major red meat export markets.
New Zealand's export lamb production is forecast to decrease by 1.7 per cent in 2018-19 due to a smaller lamb crop, as the result of a fall in the number of breeding ewes this year as farmers took advantage of high mutton prices.
New Zealand's beef cattle herd grew by 1.9 per cent to 3.68 million head at June 30, 2018, the second small increase in a row after declining steadily since the 1990s.
Sustained strong cattle prices, and the lower labour requirement associated with cattle, has encouraged farmers to maintain or lift herd sizes, particularly in the South Island.
As a result of all these factors, total lamb exports are estimated to remain at around $3.1b in 2018-19, after breaking the $3b mark for the first time in the 2017-18 season.
Beef exports are forecast to be around $3.4b in 2018-19, a 4 per cent decrease on 2017-18.
Farm expenditure for 2018-19 is forecast to increase overall, but revenue is also expected to increase, driven by a lift in farm-gate prices which are expected to increase revenue from sheep, wool, and cash crops, Burtt said.