Economic Feasibility in Commercial Egg Production in a Conventional and Cage-Free Systems with Different Stocking Densities
نویسندگان
چکیده
Adapting existing laying facilities to meet animal welfare certifications is not a simple task. It causes higher expenses producers, who are often hesitant accept the need for changes. Considerations of their financial situation make them insecure assertive decisions in this area, as they seek maintain economic efficiency poultry. This study aims analyze viability systems (conventional cages and Cage-Free) with different housing densities. The data source was systematized literature review. Five articles were found containing reports on systems. Further sources lineage handbook survey companies specializing poultry farming. An analysis performed multiple scenarios. Densities each system used compose scenarios: Conventional: 1,500 cm²/bird, 750 398 cm²/bird; Cage-Free:7 birds/m² 13 birds/m². scenarios evaluated terms Net Present Value, Internal Rate Return, Modified Discounted Payback Method, Profitability Index, Equivalent Uniform Annual Monte Carlo Simulation. best scenario Conventional, presenting NPV. Cage-Free system, seven birds per square meter, had lower NPV compared conventional All satisfactory chances success. risks negative or null return low according simulations. Conventional production economically viable when using densities cm²/bird (conventional), 7 birds/m², (Cage-Free).
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دراین پروژه به بررسی مدل سازی خشک کردن مواد غذایی با استفاده از هوای خشک در خشک کن آزمایشگاهی نوع سینی دار پرداخته شده است. برای آنالیز انتقال رطوبت در طی خشک شدن به طریق جابجایی، یک مدل لایه نازک برای انتقال رطوبت، مبتنی بر معادله نفوذ فیک در نظر گفته شده است که شامل انتقال همزمان جرم و انرژی بین فاز جامد و گاز می باشد. پروفایل دما و رطوبت برای سه نوع ماده غذایی شامل سیب زمینی، سیب و موز در طی...
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ژورنال
عنوان ژورنال: Brazilian Journal of Poultry Science
سال: 2022
ISSN: ['1806-9061', '1516-635X']
DOI: https://doi.org/10.1590/1806-9061-2022-1636