"Whole milk powder prices were therefore expected to come down due to the supply pressure," according to Castleton, adding that there was 5 per cent more whole milk powder sold at this event than at the September 4 event.
"This includes a lift in volume purchased by North Asian buyers, though most regions which purchased whole milk powder at this event bought more than they did last time," Castleton said.
At the latest GDT auction, cheddar dropped 3.5 per cent to US$3503 a tonne, while skim milk powder retreated 1.1 per cent to US$1980 a tonne.
"Prices did lift for New Zealand skim milk powder to ship in February and March, indicating buyers don't need SMP urgently but there is some longer term demand for this commodity," noted Castleton.
Anhydrous milk fat fell 0.6 per cent to US$5294 a tonne, lactose slipped 0.3 per cent to US$910 a tonne, while butter inched 0.1 per cent lower to US$4270 a tonne.
Bucking the trend, rennet casein rose 1.7 per cent to US$5421 a tonne.
For sweet whey powder, neither an index nor price was available. Butter milk powder was not offered at this event.
The New Zealand dollar last traded at 65.82 US cents as of 3.26pm in New York, compared with 65.78 US cents at the previous close in Wellington.
There were 149 winning bidders out of 179 participating at the 15-round auction. The number of registered bidders was 503, down from 541 at the previous auction.