Lamb numbers are down 4.7 per cent as 1.3 million fewer were tailed this season, and exports could drop 6.8 per cent in 2013/14, an industry report reveals.
However, farmers say if they decide to replenish stock there will be even fewer animals to slaughter.
Beef + Lamb New Zealand economic service chief economist Andrew Burtt says the Lamb Crop 2013 Report figure is higher than expected given the impact of the drought on ewe numbers and ewe condition at mating.
However, the feature of this year's spring was the significant decrease in the number of hoggets mated, he says.
"Many farmers opted to limit the numbers of hoggets put to the ram due to the tight feed situation at mating and hogget weights," he says.