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Can novel ingredients replace soybeans and reduce the environmental burdens of European livestock systems in the future?
Journal of Cleaner Production ( IF 11.1 ) Pub Date : 2018-03-22
C.W. Tallentire, S.G. Mackenzie, I. Kyriazakis

Much of the protein in the diets of European livestock is sourced from imported soybeans produced in the Americas. This protein deficit in livestock production presents a risk to social, economic and environmental progress in Europe. In this study the impact of incorporating novel ingredients into future chicken diet formulations to serve as European sourced alternatives to imported soybeans was investigated. The novel ingredients considered were: microalgae, macroalgae, duckweed, yeast protein concentrate, bacterial protein meal, leaf protein concentrate and insects. Using horizon scanning and a modelling approach, the nutritional requirements of two potential meat-producing chicken lines were simulated. The two chicken lines were a fast-growing line based on the apparent maximum feed efficiency that could be achieved through further artificial selection, and a reduced growth rate for high welfare line. Diets were formulated to include the novel ingredients, whilst meeting the nutritional requirements of the birds. The effects of diet composition on indicators of environmental burdens, associated with feed production for the poultry industry, were then assessed. We found that soybean products can be completely replaced by novel feed ingredients, whilst reducing the greenhouse gas emissions and arable land requirements for feed provision relative to conventional diets formulated for both chicken lines. Switching from conventional diets to diets which incorporate novel ingredients was also shown to mitigate the increased environmental burdens associated with moving towards higher welfare livestock systems. Incorporation of novel ingredients in diet formulations offers a viable option for providing sustainable and nutritionally balanced livestock feed in the future and thus provides huge potential for facilitating bespoke feeding strategies and specific management choices for mitigating environmental impacts of chicken systems.



中文翻译:

未来是否可以使用新颖的成分替代大豆并减轻欧洲牲畜系统的环境负担?

欧洲牲畜饮食中的大部分蛋白质来自美洲生产的进口大豆。牲畜生产中的蛋白质缺乏会给欧洲的社会,经济和环境发展带来风险。在这项研究中,研究了将新成分掺入未来鸡肉配方中作为欧洲来源的​​进口大豆替代品的影响。所考虑的新颖成分是:微藻,大型藻,浮萍,酵母浓缩蛋白,细菌蛋白粉,叶蛋白浓缩物和昆虫。使用水平扫描和建模方法,模拟了两种潜在的产肉鸡品系的营养需求。这两条鸡品系是快速增长的品系,其基础是通过进一步的人工选择可以实现的最大饲料表观效率,以及高福利品系的增长率降低。在满足禽类营养要求的同时,配制了包括新型成分在内的日粮。然后评估了日粮组成对与家禽业饲料生产相关的环境负担指标的影响。我们发现大豆产品可以完全被新型饲料原料替代,同时相对于两种鸡品系的常规饲料,减少了温室气体排放和饲料供应的耕地需求。从传统饮食向包含新成分的饮食转变也显示出减轻与向更高福利的牲畜系统过渡有关的环境负担的减轻。在日粮配方中添加新成分为将来提供可持续且营养均衡的牲畜饲料提供了可行的选择,因此在促进定制喂养策略和减轻鸡群对环境的影响的具体管理选择方面具有巨大潜力。

更新日期:2018-03-22
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