The oil-sensitive loonie was down 0.49 of a cent to 74.70 cents USA, as the May crude contract lost 36 cents to US$50.24 per barrel. Silver for May delivery were up 11.1 cents, or 0.6%, at $18.32 an ounce, its highest settlement since March 1.
Stock markets have been on hold for most of the week ahead of the latest release of jobs figures for March in Canada and the US, scheduled for Friday.
The Toronto Stock Exchange's S&P/TSX composite index ended down 26.08 points, or 0.17 percent, at 15,642.99. Of the index's 10 main groups, six advanced.
Materials stocks climbed 1.69 per cent while the base metals sector of the TSX inched 0.69 per cent higher.
The most influential stock on the index was Enbridge Inc, which finished 1.7 percent higher at C$56.60.
Department store retailer Hudson's Bay Co reported a quarterly loss on Tuesday, due in part to an impairment charge related to weak sales at Saks OFF 5TH and Gilt.
"The jobs numbers will really be what will be driving the market tomorrow", said Jonathan Pinsler, a portfolio manager and senior vice-president at TD Wealth.
Indiana's abortion ultrasound requirement shut down by federal judge
So far, the ruling says that nine women have not been able to obtain an abortion due to the new ultrasound law. Every woman that is counseled for abortion care receives information about all options.
Disappointing data out of the automotive sector, an important driver of the USA economy, added to the negative sentiment on the US markets, as several major automakers reported that their sale plunged last month.
US companies added 263,000 workers in March, the most since December 2014, payrolls processor ADP said on Wednesday.
In New York, the Dow Jones industrial average gained 174.96 points to 20,864.20. A year ago, it had earnings of $370 million for the same quarter.
The Nasdaq Composite was up 31.48 points, or 0.53 per cent, at 5,930.09, slightly below its record high of 5,931.83.
Oil prices eased from one-month highs on Wednesday, as support from an outage at the largest UK North Sea oilfield was offset by a surprise increase in USA crude inventories to a record high limited price gains.
In commodities, the May crude oil contract was up 12 cents at US$51.15 per barrel and May natural gas contracts lost three cents at US$3.27 per mmBTU.
The index was posting 5 new 52-week highs and no new lows.