North Londonderry (United States) (AFP) – French dairy giant Lactalis is betting big on North America, adapting to local preferences to attract consumers while it manages country-specific issues, such as the extreme volatility of US milk prices. On the new production line at Stonyfield Farm in Londonderry, New Hampshire, a Lactalis subsidiary since 2017, 800,000 yogurts are pumped out every week. The organic brand is seeing strong demand for its products aimed at babies and children, so Stonyfield plans to build a second production line for them this year. To nibble at US market share in the y…