** Shares of New Zealand-based dairy major a2 Milk ATM.NZ rise as much as 6.1% to NZ$9.08, their biggest intraday pct jump since March 19

** Co's shares track the rally in global equities as U.S. President Trump temporarily lowered tariffs that had sparked a surge in volatility across world stocks MKTS/GLOB

** Citi believes that the recent easing of marriage restriction rules in China, the co's top market, should positively impact a2 Milk

** Brokerage highlights that more marriages are likely to be supportive of birth rates in the long term, helping sales

** 'Buy' rated on co's ASX-listed shares A2M.AX, price target set at A$8.20, last up 3%

** YTD, a2 Milk's NZ shares up 42.7%

(Reporting by Nichiket Sunil in Bengaluru)

((nichiket.sunil@thomsonreuters.com))