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• W4368364507 abstract "Abstract A mathematical model to estimate: a) the cost of beef cattle production in grazing systems; and b) the environmental sustainability of production systems using the Emergy Synthesis Model was evaluated. All items were considered and allocated, according to the precepts of the Economic Theory, under Fixed Cost (FC), Variable Cost (VC), and Total Cost (TC). The model estimated costs in the case-study for the entire property and the different production lots within the same property. Costs were allocated per animal and per kg of beef cattle produced. The total cost per animal of cattle produced was US$ 416.86. It was observed that the VC represented 66% of the TC. The cattle purchase price, including under VC, was the factor that represented the most significant portion of the production cost, in which the current operation reached 59% of the TC. Therefore, the currently developed tool may be used to facilitate understanding and potentially help to manage risk and profit. To examine from the environmental point of view, the synthesis of emergy was utilized. Emergy is the memory of the available energy used directly and indirectly to produce a service or product. It was observed that the property considered in the current case-study showed a renewability of 47.6%, indicating that less than one-half of all the energy used came from renewable resources. The emergetic yield ratio (EYR), which measures how much natural energy was incorporated into produced goods or services, was 1.91. The survey showed that the emergetic exchange ratio (EER), which indicates how balanced the exchange ratio between the energy in products and the energy gross revenue, was 12.45, showing that the system delivers much more energy than it receives in a monetary form. It seems like the current system analysis was highly dependent on cost-effective resources. The fuel used for pasture management services was the non-renewable resource that mostly affected the design. For the emergy synthesis, such input represented 51.2% of the total energy used, but from the economic point of view, such resource represented only 1% of the total production cost. The system could be less dependent on market variability if good pasture management practices were adopted, such as using a reasonable pasture stocking rate. By using the emergy indexes, it was possible to analyze the cattle system from an environmental perspective, allowing to assist technology/technique adoptions capable of increasing the sustainability indicators, which has been recently valued by worldwide beef consumers." @default.
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• W4368364507 date "2023-05-01" @default.
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• W4368364507 title "146 Development of a Mathematical Model for Cost Calculation and Sustainability Analysis of Beef Cattle Grazing Systems" @default.
• W4368364507 doi "https://doi.org/10.1093/jas/skad068.105" @default.
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