持续性
选择(遗传算法)
环境影响评价
生命周期评估
生产(经济)
农业科学
盈利能力指数
动物育种
生猪养殖
影响评估
农业经济学
生物
业务
生态学
动物科学
经济
计算机科学
宏观经济学
财务
人工智能
公共行政
政治学
作者
Greg Thoma,Banks Baker,P. W. Knap
出处
期刊:Animals
[MDPI AG]
日期:2024-08-22
卷期号:14 (16): 2435-2435
摘要
Lifecycle assessment (LCA) quantified changes in environmental impact categories (global warming, eutrophication, etc.) from 2021 to 2030 due to genetic trends in (re)production traits in pig lines of the breeding company Genus-PIC. The 2030 levels were projected with selection index theory based on weightings of traits in the breeding goals and genetic covariances among them. The projected improvement was 0.9% annually for most impact categories. Another LCA compared the impacts of 2021 North American pig production based on PIC genetics versus the industry average. Software openLCA converted material and energy flows to impact categories of frameworks ReCiPe-2016, PEF-3.1, and IPCC-2021. Flows came from data recorded by customers (1.1/4.7 million sows/finishing pigs) and by subscribers to a third-party data aggregator (1.3/9.1 million). PIC genetics have a 7–8% better impact than industry average for 13/18 categories of ReCiPe-2016, 19/25 of PEF-3.1, and all categories of IPCC-2001. Pig breeding delivers positive environmental outcomes as correlated responses to selection for profitability-oriented breeding goals. This trend is additive; technology development will increase it. Different investment levels in breeding population structure and technology and different operational efficiencies of breeding companies cause substantial differences in the environmental impact of pig production.
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