Sainsbury’s, the United Kingdom's second-largest supermarket chain, has announced the phased removal of brown eggs from its own-brand product lines in favor of white-shell alternatives.

英國第二大超級市場連鎖店 Sainsbury’s 宣布，將分階段移除自有品牌產品線中的褐色蛋，改用白色殼的替代品。

The strategic pivot is predicated upon a carbon assessment conducted by SAC Consulting, which determined that white eggs possess a carbon footprint 12.7 per cent lower than those of brown eggs. This disparity is attributed to the physiological and behavioral characteristics of white-feathered hens, including superior feed conversion efficiency and an extended productive lifespan. Furthermore, the data suggests that white-feathered breeds exhibit a more docile temperament, resulting in a reduction of feather-pecking and a concomitant improvement in flock welfare.

這次策略轉向是基於 SAC Consulting 進行的碳評估，該評估確定白蛋的碳足跡比褐蛋低 12.7%。此差異歸因於白色羽毛母雞的生理和行為特徵，包括更優越的飼料轉化率以及更長的生產壽命。此外，數據顯示白色羽毛品種的性格較溫順，能減少啄羽行為，從而改善雞群福利。

Historically, the UK retail market experienced a predominance of brown eggs following a period in the 1970s when white eggs were the standard. This shift was driven by erroneous claims regarding the nutritional superiority of brown eggs and unfounded allegations that white shells were chemically bleached. Consequently, white-shelled eggs, such as those from the Italian White Leghorn breed, were primarily relegated to the hospitality sector. However, recent market volatility—specifically the supply disruptions caused by pandemic-era consumer behavior—prompted retailers to re-evaluate the viability of white eggs for direct consumer sale.

回顧歷史，英國零售市場在 1970 年代白蛋為標準之後，經歷了一段褐蛋主導的時期。這種轉變是由於對褐蛋營養優越性的錯誤主張，以及關於白殼經過化學漂白的無根據指控所驅動。因此，如義大利白色萊格霍恩 (Italian White Leghorn) 等白殼蛋，主要被降級至餐旅業使用。然而，近期的市場波動——特別是疫情期間消費者行為導致的供應中斷——促使零售商重新評估白蛋直接銷售給消費者的可行性。

This institutional realignment is designed to facilitate the achievement of specific environmental benchmarks. Sainsbury’s has established a trajectory to reach net-zero emissions within its internal operations by 2035, with a comprehensive supplier-wide target set for 2050. This corporate objective aligns with the broader national mandate to eliminate climate pollution by 2050, as recently reaffirmed by the Secretary of State for Energy.

這次機構調整旨在協助達成特定的環境基準。Sainsbury’s 已設定目標，於 2035 年前實現內部運營淨零排放，並為全供應商設定了 2050 年的目標。此企業目標與英國能源大臣近期再次確認的 2050 年消除氣候污染的國家指令相一致。

Sainsbury’s is currently transitioning its own-brand egg inventory to white shells to enhance environmental sustainability and animal welfare.

Sainsbury’s 目前正將其自有品牌的蛋類庫存轉為白殼，以提升環境永續性與動物福利。