Sainsbury’s is to transform its egg category, with the retailer confirming it is “aiming towards 100%” white eggs across its own-brand core ranges as part of its net-zero strategy. The move marks a significant departure from a UK market that has been dominated by brown eggs for generations and reflects growing retailer interest in the efficiency and carbon credentials of white-egg-laying breeds. According to Sainsbury’s, a life-cycle assessment of its own supply chain found that white eggs carried a 12.7% lower carbon footprint per kilogram than brown eggs. The retailer said the difference was driven primarily by “improved feed efficiency”…