NZ's Synlait Milk jumps to near 1-week high after appointing new CEO

** Shares of Synlait Milk SML rise as much as 2.30% to NZ$0.890, their highest level since February 25, last up 1.2%

** The dairy co appoints Richard Wyeth as its chief executive officer

** Wyeth to replace Acting CEO Tim Carter

** Co's shares up 1.1% this year