top of page
Blog
INTERNATIONAL CHAMBER OF SUSTAINABLE DEVELOPMENT
Search
Balancing Carbon and Compassion: Navigating the Trade-Offs in UK Poultry Production
Janet Ng, U.K. ESG Advocate
Recently, major UK restaurant chains made headlines by stepping away from the Better Chicken Commitment (BCC) to join an industry-led "Sustainable Chicken Forum". Their primary reasoning highlights a genuine modern dilemma: faster-growing chicken breeds require less land and feed, thereby producing lower greenhouse gas (GHG) emissions per bird (Martin, 2026).
As stakeholders and consumers navigating the complexities of ESG (Environmental, Social, and Governance) goals, this move invites us to pause and reflect. It is mathematically true that reaching slaughter weight faster requires fewer resources. However, some stakeholders in the scientific and animal welfare communities caution against what they call "carbon tunnel syndrome" — a hyper-focus on emissions that might obscure other vital sustainability metrics (Abeyesinghe, et al., 2025). This situation presents a classic trade-off between the "E" (Environment) and the "S" (Social/Ethics). How should we decide what makes our food systems truly "sustainable" when climate goals, public health, and animal welfare appear to be in conflict?
The Welfare vs. Carbon Dilemma
In the global push to achieve Net Zero, we often assume that what is most efficient for the climate is the best path forward. Swapping beef for chicken, for instance, dramatically lowers a consumer's carbon footprint by around 80%. However, because chickens are much smaller, this dietary shift requires raising and processing roughly 200 times as many animals (Ritchie, 2024).
Faster-growing broiler strains have been genetically selected to grow over 400% faster than they did in the 1950s (Tallentire, et al., 2016). This efficiency is a triumph of agricultural engineering, but it comes with severe biological trade-offs. These birds often experience higher rates of lameness and cardiovascular issues. Furthermore, this rapid growth leads to muscle myopathies — specifically conditions known as "wooden breast" and "white striping" — which degrade meat quality, lower nutritional value, and increase consumer rejection (Tallentire, et al., 2016; Cruz, et al., 2019). According to researchers utilizing the Welfare Footprint Framework, switching to slower-growing breeds could prevent 15 to 100 hours of severe pain and suffering per bird (Cabico, 2025).
This leaves us with a challenging question: Is maximizing carbon efficiency worth the biological cost to the animal and the degradation of the final product?
Measuring True Efficiency: Waste and Systemic Risk
The environmental argument for faster-growing chickens is compelling on paper. Industry reports calculate that slower-growing breeds produce roughly 24.4% higher GHG emissions per kilogram of meat, largely based on a direct feed-to-meat conversion ratio over a longer lifespan (RSK ADAS Limited, 2024). However, looking at the holistic lifecycle of the flock changes the math. Faster-growing breeds tend to have higher mortality rates on the farm and face more "carcass downgrades" at the slaughterhouse due to the aforementioned mobility and muscle issues. When a bird does not make it to the consumer, 100% of the carbon, water, and land used to raise it is wasted. Slower-growing birds are generally more robust, resulting in fewer carcass rejections and less "wasted carbon" (Abeyesinghe, et al., 2025).
Beyond physical waste, there is a hidden systemic risk: Antimicrobial Resistance (AMR). Faster-growing birds kept in highly efficient, dense conditions are more prone to illness, often requiring more antibiotic interventions. ESG analysts increasingly view AMR as a massive systemic financial and public health risk. Transitioning to slower-growing, robust breeds naturally reduces antibiotic use, transforming animal welfare from a purely moral issue into a macroeconomic risk management strategy (Abeyesinghe, et al., 2025; World Bank Group, 2017; Slegers, et al., 2024).
The Feed Factor: A Potential for Systemic Change
Perhaps the most significant environmental hurdle for slower-growing chickens is that they live longer and eat more. Feed production — particularly the land-use change and deforestation associated with imported soy — accounts for the vast majority of poultry’s carbon footprint (RSK ADAS Limited, 2024). Yet, this assumes that we would feed slower-growing chickens the exact same diet as faster-growing chickens. Faster-growing broilers require highly concentrated, high-protein diets to sustain their rapid growth. Slower-growing breeds have lower daily protein requirements and more robust digestive systems. Researchers suggest that slower-growing breeds could be fed lower-impact diets utilizing local agricultural by-products, insect meal, European-grown legumes, and food waste streams (Abeyesinghe, et al., 2025). Transitioning to slower-growing breeds could actually serve as a catalyst to decouple the poultry sector in the UK from imported soy, trading short-term carbon increases for long-term supply chain resilience.
Governance, Farmers, and Future-Proofing
Finally, we should consider the 'G' (Governance) and the economic realities of the 'S' (Social) within ESG frameworks. Transitioning to slower-growing breeds requires farmers to drastically change their operations. As highlighted by literature on a 'Just Transition' in food systems, if major buyers do not commit to purchasing these birds at a fair premium, the financial risk falls entirely on the producers, threatening rural livelihoods (Tribaldos & Kortetmaki, 2022). Furthermore, animal welfare regulations are tightening globally, as evidenced by the European Food Safety Authority's recent recommendations against fast-growing broiler strains (EFSA, 2023). Consequently, investor networks like the FAIRR Initiative warn that companies doubling down on the most intensive systems to save short-term carbon points might face sudden, expensive compliance costs tomorrow. Adopting slower-growing breeds is therefore a vital strategy for future-proofing the supply chain against impending regulatory shifts and avoiding stranded assets (FAIRR, 2023).
Conclusion: Weighing the Costs
The debate over the Better Chicken Commitment highlights how difficult it is to balance competing sustainability goals. Transitioning to slower-growing breeds is estimated to increase the cost of production by around US$1 (~£0.8) per kilogram of meat (Cabico, 2025). In a time of high living costs, affordability is a crucial factor.
One proposed compromise is a cultural shift toward "less but better" meat consumption — eating smaller quantities of meat raised under higher welfare standards to balance climate targets with ethical concerns (Abeyesinghe, et al., 2025).
There are no easy answers here, only trade-offs. As we look to the future of food, we may ask ourselves: How much carbon are we willing to emit in the name of animal welfare? And conversely, how much animal welfare, product quality, and systemic resilience are we willing to sacrifice in the name of carbon efficiency?
References:
Abeyesinghe, S. M., Stanley, I., Nicol, C. J. & Cardwell, J. M., 2025. [Online] Available at: https://doi.org/10.3389/fanim.2025.1534108 [Accessed 8 March 2026].
Cabico, G., 2025. Raising Slower Growing Chickens Could Reduce Their Suffering for a Lower Cost Than You Might Think. [Online] Available at: https://sentientmedia.org/slower-growing-chickens-could-reduce-their-for-lower-cost-than-you-might-think/ [Accessed 9 March 2026].
Cruz, R. F. A. et al., 2019. Occurrence of white striping and wooden breast in broilers fed grower and finisher diets with increasing lysine levels. [Online] Available at: https://doi.org/10.3382/ps/pew310 [Accessed 1 March 2026].
EFSA, 2023. Welfare of broilers on farm. [Online] Available at: https://efsa.onlinelibrary.wiley.com/doi/10.2903/j.efsa.2023.7788 [Accessed 28 February 2026].
FAIRR, 2023. Coller FAIRR Protein Producer Index 2023/24. [Online] Available at: https://www.fairr.org/resources/reports/protein-producer-index-2023 [Accessed 28 February 2026].
Martin, J., 2026. KFC, Nando's, and others ditch chicken welfare pledge. [Online] Available at: https://www.bbc.com/news/articles/cm2r6jqm042o [Accessed 9 March 2026].
RSK ADAS Limited, 2024. Costs and implications of the European Chicken Commitment in the EU. [Online] Available at: https://avec-poultry.eu/wp-content/uploads/2024/05/European-Chicken-Commitment-Report-ADAS-March-2024.pdf [Accessed 10 March 2026].
Ritchie, H., 2024. What are the trade-offs between animal welfare and the environmental impact of meat?. [Online] Available at: https://ourworldindata.org/what-are-the-trade-offs-between-animal-welfare-and-the-environmental-impact-of-meat#:~:text=Bigger%20animals%20%E2%80%94%20cows%2C%20pigs%2C,chickens%20and%20fish%20%E2%80%94%20are%20slaughtered. [Accessed 10 March 2026].
Tallentire, C. W., Leinonen, I. & Kyriazakis, I., 2016. Breeding for efficiency in the broiler chicken: A review. [Online] Available at: https://link.springer.com/article/10.1007/s13593-016-0398-2 [Accessed 10 March 2026].
Tribaldos, T. & Kortetmaki, T., 2022. Just transition principles and criteria for food systems and beyond. [Online] Available at: https://doi.org/10.1016/j.eist.2022.04.005 [Accessed 1 March 2026].
Slegers, Y. et al., 2024. Broiler flocks in production systems with slower-growing breeds and reduced stocking density receive fewer antibiotic treatments and have lower mortality. [Online] Available at: https://doi.org/10.1016/j.psj.2024.104197 [Accessed 1 March 2026].
World Bank Group, 2017. Drug-Resistant Infections - A Threat to Our Economic Future. [Online] Available at: https://documents1.worldbank.org/curated/en/323311493396993758/pdf/final-report.pdf [Accessed 1 March 2026].
(Date: 13th February, 2026)
特朗普反ESG竟帶來好處？
這個問題似乎既奇怪又尷尬！特朗普對ESG有貢獻!? 眾所周知，特朗普的政策是反ESG。矛盾的是，特朗普對ESG的敵意反而為這場反ESG運動 (Anti-ESG Campaign)帶來了幾項意想不到的好處：
減少漂綠行為，增強真實性
特朗普的懷疑態度無意中迫使企業超越空泛的可持續發展聲明。企業再也無法依靠表面的ESG資訊傳遞而不面臨嚴格審查，這推動了對話朝向真正可驗證的可持續發展實踐，而非營銷包裝。ESG周圍的「噪音」正在被剝 離，為更嚴謹和真實的ESG實踐騰出空間。
ESG 展現出的韌性
ESG 比批評者預想的更為持久：
披露二氧化碳排放的美國公司從四年前的約6,000家增長到今天的 24,000 家。
ESG 數據提供商和評級機構的收入持續增長，顯示投資者仍然重視並願意為ESG資訊付費。
超過四分之三的首席財務官計劃在聯邦政府不友好的環境下維持或增加可持續發展投資。
只有6%的美國公司正在進行大規模減少ESG相關活動；大多數公司只是調整ESG相關的措辭或表述框架，而非放棄實質內容。
個別的州政府強化國際合作
聯邦層面的真空加速了其他地方政府的ESG領導力：
個別民主黨的州份與國際夥伴組成聯盟，推進氣候和ESG目標，建立更具雄心的次國家級機制。
歐洲和亞洲受影響較小，所以普遍繼續推進可持續發展計劃。其中特別是中國，在綠色金融和清潔技術方面取得競爭優勢。
全球標準（例如：歐盟的「企業可持續發展報告指令」CSRD）正在成為可持續發展報告的基準，降低了美國聯邦政策對跨國公司的相關性。事實上，不少美國公司已經宣佈採用CSRD。
認真參與者與投機者的分離
那些從未真正致力於ESG的公司正在退出淨零聯盟, 並縮減環保的目標。 這澄清了誰是認真的參與者, 這種「自我選擇」效應意味著剩餘的ESG承諾往往更加可信，而非公關驅動的。ESG論述正在從基於價值觀的語言轉向實質的企業風險管理和投資回報。
結論
在特朗普這場反ESG的運動中驅使不少人用批判性角度去看ESG, 其實間接減了少漂綠行為, 亦使到少數的極端環保主義者(Radical Environmentalists)收斂。實踐 ESG的確可使經濟更健康地可持續發展, 我們應該做的是：做正確的事! (Do the right thing!)
本文於2026年3月15日刊登於《東方日報》「宏觀視野」專欄，題為《特朗普反ESG竟帶來好處？》。
葉榮鏗 (Angus) 博士
國際可持續發展協進會(ICSD)創會主席
bottom of page