"The expected small lift in lambing percentage is not enough to offset the drop in breeding ewe numbers, hence the now expected decline in lamb numbers. After accounting for retentions, it all suggests there will be around 19.3 million lambs available for export, similar to the season just ended.
"Meanwhile, lower sheep numbers is expected to see export mutton production in 2017-18 fall by as much as 9 per cent from the 2016-17 season. All this sees us tab down our overall meat export volume growth forecasts for the 2017-18 season."
A smaller supply of lambs could improve their prices.
"Reports of very little inventory held through the supply chain supports this view, although, as ever, actual pricing at the farm gate will also depend on the weather and currency levels."
B+LNZ expected export production would to be marginally lower in 2017-18.