Dec 6 (Reuters) - Fonterra Shareholders' Fund FSF.NZ :
* REDUCED ITS FORECAST FARMGATE MILK PRICE FOR 2017/18 SEASON FROM $6.75 TO $6.40 PER KGMS
* "UPDATED ITS FULL SEASON NEW ZEALAND MILK COLLECTION FORECAST DUE TO ONGOING CHALLENGING WEATHER CONDITIONS"
* CO-OPERATIVE HAS REDUCED ITS FORECAST FOR FULL SEASON BY 1 PER CENT TO 1,525 MILLION KGMS - SAME VOLUME AS LAST SEASON
* Q1 REVENUE OF $4 BILLION IS UP 4 PER CENT ON SAME PERIOD LAST YEAR
* Q1 SALES VOLUMES ARE DOWN 20 % TO 3.9 BILLION LIQUID MILK EQUIVALENT (LME), WHILE GROSS MARGIN OF 16.7 PER CENT IS ALSO DOWN
* FOR BALANCE OF 2018 REDUCED FORECAST EARNINGS FROM 45-55 CENTS TO 35-45 CENTS PER SHARE
* ALL FIGURES IN NZ$