DataSheet1_Modeling approaches to redesign ruminant production toward sustainability—the state of the art from a literature perspective.PDF

Integrated systems allow the redesign of productive landscapes due to the insertion of different species of trees and shrubs. A diversified pasture provides the animal with a wider range and a greater amount of phytonutrients than animals fed on grains, and beyond that, tree legumes have great potential for producing biomass with excellent levels of crude protein, as well as the capacity for symbiotic nitrogen fixation. Assuming that modeling can be a relevant tool to address systemic changes, we sought to answer the following question: “how can ruminant husbandry systems be modeled to help farmers, considering the combination of pasture and crop production?” Thus, this work aims to create a modeling framework to guide the redesign of productive landscapes for ruminants in tropical conditions at the farm level. The activities to be carried out will be divided into four stages: a) bibliographical research on existing indicators and/or models for ruminant livestock farming; b) writing opinion articles (already published) and review articles (this article); c) indicating parameters for modeling the redesign of ruminant production landscapes with the use of multifunctional forage plants; and d) demonstrating the novelty by building a decision-making model for rural properties. The hypothesis of this work is that the redesign of multifunctional production landscapes can be guided by modeling obtained from experimental variables that already exist and/or are under construction, as well as from published literature.

集成系统（Integrated systems）通过引入不同乔木与灌木物种，可实现生产景观的重新设计。相较于以谷物为食的牲畜，多样化牧场能为反刍动物提供更丰富的品类与更多的植物营养素。此外，乔木状豆科植物具备生产生物量的巨大潜力，其粗蛋白含量优异，同时拥有共生固氮能力。鉴于建模可作为应对系统性变革的有效工具，本研究旨在解答如下问题：“结合牧草与作物生产的实际情况，应如何对反刍动物养殖系统进行建模以助力农户生产？”据此，本研究旨在构建一套建模框架，以指导热带地区农场尺度下反刍动物生产景观的重新设计。本次研究将分为四个阶段开展：
a） 针对反刍动物养殖现有指标与模型开展文献调研；
b） 撰写已发表的观点类文章与本篇综述文章；
c） 明确利用多功能饲用植物重构反刍动物生产景观的建模参数；
d） 通过构建面向农村生产单元的决策模型，验证本研究的创新性。
本研究的核心假设为：多功能生产景观的重构，可依托现有/在建实验变量与已发表文献衍生的建模方法实现指导。