Rathnayaka Shashika D, Revoredo-Giha Cesar, de Roos Baukje
The Rowett Institute, University of Aberdeen, AberdeenAB25 2ZD, UK.
Food Marketing Research Team, Scotland's Rural College (SRUC), EdinburghEH9 3JG, UK.
Public Health Nutr. 2025 Mar 19;28(1):e81. doi: 10.1017/S1368980025000217.
Fish is high in nutrients that provide a range of health benefits, but people in Great Britain only consume around half the amount that is recommended. This study analysed the demand for fish for consumption at home across different household groups in Great Britain.
Using a Rotterdam demand model, price and income elasticities were estimated for eleven fish groups across seven household groups. To investigate changes in fish demand, we decomposed growth in fish demand into income, relative price and change in taste and seasonality.
The data used for our analysis were drawn from the Kantar Worldpanel dataset for Great Britain for the period from 2013 to 2021.
12 492 households in Great Britain.
Families with children consistently allocated a lower share of their grocery spending on fish and preferred to purchase ready-to-use and convenient fish products, compared with households without children. Purchases of chilled fresh/smoked oily fish, canned oily fish and frozen processed fish led spending across demographic groups, whilst purchases of canned oily fish showed minimal growth. The demand for most fish products across household groups was price inelastic, indicating that the percentage change in the quantity of fish demanded increased or fell by less than the percentage change in price.
Income and taste were identified as significant determinants of demand changes across all household groups, while price only played a prominent role in demand changes for certain fish groups. Thus, increasing fish consumption, especially in lower-income groups, who do not usually consume much fish, may require a different intervention than simply making fish more affordable.
鱼类富含多种营养物质，对健康有益，但英国民众的鱼类消费量仅约为推荐量的一半。本研究分析了英国家庭不同群体对家庭消费鱼类的需求。
使用 Rotterdam 需求模型，估计了七个家庭群体中十一种鱼类的价格弹性和收入弹性。为了研究鱼类需求的变化，我们将鱼类需求的增长分解为收入、相对价格以及口味和季节性变化。
我们分析所用的数据来自 Kantar Worldpanel 英国数据集，时间跨度为 2013 年至 2021 年。
英国的 12492 个家庭。
与无子女家庭相比，有子女家庭在食品杂货支出中用于鱼类的份额始终较低，且更倾向于购买即食和方便的鱼类产品。冷藏新鲜/烟熏油性鱼类、罐装油性鱼类和冷冻加工鱼类的购买量在各人口群体中领先，而罐装油性鱼类的购买量增长最小。所有家庭群体对大多数鱼类产品的需求缺乏价格弹性，这表明鱼类需求量的百分比变化增加或减少的幅度小于价格的百分比变化。
收入和口味被确定为所有家庭群体需求变化的重要决定因素，而价格仅在某些鱼类群体的需求变化中起显著作用。因此，增加鱼类消费，尤其是在通常鱼类消费量不高的低收入群体中，可能需要采取不同于单纯降低鱼类价格的干预措施。
