HOUSTON (Reuters) -Growth in oil output from the U.S. Permian basin, the country's top oilfield, is expected to slow by at least 25% this year despite President Donald Trump's vow to maximize production, energy executives forecast on Thursday. At a conference in Houston, they said production is expected to rise in 2025 by about 250,000 barrels per day (bpd) to 300,000 bpd from the shale formation spread across Texas and New Mexico, down from last year's 380,000-bpd increase. That forecast aligns with the U.S. Energy Information Administration's projection of a 300,000-bpd rise.