Development of an Air-Recirculated Ventilation System for a Piglet House, Part 1: Analysis of Representative Problems through Field Experiment and Aerodynamic Analysis Using CFD Simulation for Evaluating Applicability of System

Kim, Jun-Gyu; Lee, In-Bok; Lee, Sang-yeon; Park, Se-Jun; Jeong, Deuk-Young; Choi, Young-Bae; Decano-Valentin, Cristina; Yeo, Uk-Hyeon

doi:10.3390/agriculture12081139

Cited by 11 publications

(7 citation statements)

References 16 publications

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“…In general, the goal of ventilation is to renew the volume of air in the weaning rooms, prevent respiratory pathologies, regulate temperature, eliminate harmful gases, and ensure the necessary supply of oxygen [7]. In this regard, there are many studies suggesting strategies and better facilities to improve the air quality of farms [7,47,[49][50][51]. However, caution must be taken with newly weaned piglets, as they are highly susceptible to low temperatures and high air speeds [47].…”

Section: Discussionmentioning

confidence: 99%

Multi-Criteria Evaluation Model of Management for Weaned Piglets and Its Relations with Farm Performance and Veterinary Medicine Consumption

Sanz-Fernández,

Díaz-Gaona,

Borge

et al. 2023

Animals

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Weaned piglets, being immature, demand careful handling to mitigate post-weaning stress in order to avoid immunosuppression and the use of antimicrobials to palliate the effects of disease outbreaks due to poor management. The objective of this work is to design a quick scan calculator or multi-criteria evaluation model of management for weaned piglets, founded on 10 critical indices covering post-weaning management aspects based on hygienic measures and management of facilities and animals. These include pre-weaning handling, batch management, biosecurity, water management, feed management, health program, stockmen training, temperature, ventilation, and floor conditions and density to relate handling and hygiene practices with farm performance and the consumption of veterinary medication. Each index carries a maximum score of ten, with evaluations derived from different management factors that make up each index (from three to eight factors were evaluated per index). Their cumulative score reflects the degree of adequacy of on-farm management. Therefore, a perfectly managed farm would achieve 100 points. The calculator underwent testing on 23 intensive farms with a total population of close to 16,000 sows and more than 400,000 weaned piglets, revealing the highest mean scores in floor conditions and density (8.03 out of 10) and pre-weaning handling and health programs (6.87 and 6.28, respectively). Conversely, the lowest scores corresponded to temperature, ventilation, water management, and stockmen training (4.08, 4.32, 4.81, and 4.93, respectively). The assessed farms averaged a global score of 56.12 out of 100 (from 37.65 to 76.76). The calculator’s global score correlated with key post-weaning productivity and piglet health indicators, such as the feed conversion ratio, mortality rate, and piglet production cost, with r values of −0.442, −0.437, and −0.435, respectively (p < 0.05). Additionally, it negatively correlated with medication costs per piglet (r = −0.414; p < 0.05) and positively with annual farm productivity (r = 0.592; p < 0.01). To enhance management, hygiene, and prevention, farms should prioritize addressing indices with the lowest scores, thereby reducing medication consumption and enhancing productivity and health outcomes. Additionally, this quick scan calculator can be used for benchmarking purposes.

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Section: Discussionmentioning

confidence: 99%

Multi-Criteria Evaluation Model of Management for Weaned Piglets and Its Relations with Farm Performance and Veterinary Medicine Consumption

Sanz-Fernández,

Díaz-Gaona,

Borge

et al. 2023

Animals

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“…Yeo et al [77,81] used CFD to evaluate the key factors of odor dispersion (wind speed, wind direction, atmospheric stability, terrain condition, ventilation type, and so on). Kim et al [82] simulated the temperature and ammonia concentration distribution inside a nursery pig house by CFD, which was able to systematically quantify and analyze the distribution and change in environmental factors.…”

Section: Applications Of Cfdmentioning

confidence: 99%

Environmental Factor Detection and Analysis Technologies in Livestock and Poultry Houses: A Review

et al. 2023

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The environment in livestock and poultry houses plays an important role in the growth and reproduction of livestock and poultry. In order to obtain the environmental conditions of livestock and poultry houses in a timely and reliable manner, and eliminate adverse environmental factors, scholars have been exploring various methods to obtain and predict environmental factors. This paper reviewed the literature from the last 10 years, specifically focusing on technologies for detecting environmental factors in livestock and poultry houses, which can be mainly divided into three categories: research on the environmental monitoring and control of livestock and poultry houses based on detection equipment and wireless sensor technology; research on the distribution and regularity of environmental factors in livestock and poultry houses based on a mathematical model; research on the environmental simulation and detection of livestock and poultry houses based on computer technology. The current testing methods have their advantages and disadvantages. When studying environmental factors, researchers should choose the most appropriate method for data acquisition according to the actual situation. The proposed recommendations for achieving this goal are as follows: (1) The control of environmental factors should be combined with the physiological response of livestock and poultry. The needs of animals should be considered; (2) Novel approaches need to be developed to integrate energy requirements into the environmental regulation of livestock and poultry houses; (3) It is necessary to research and develop control models and strategies that can predict the environment in the houses, and the transient simulation method should be further explored; (4) Improve environmental detection and control accuracy through the coupling of different technologies.

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“…According to Norton et al [23], the acronym CFD, which originated from Computational Fluid Dynamics, is a sophisticated tool for simulating several phenomena, such as heat and mass transfer, phase changes, chemical reactions, etc., which makes it possible to study the computational models of physical systems under the most diverse conditions of interest. In CFD, numerical methods are used to simulate the behavior of the fluid via the resolution of nonlinear partial differential equations using the finite volume method [25,35].…”

Section: Computational Fluid Dynamicsmentioning

confidence: 99%

“…CFD is one of the main techniques that uses numerical methods to characterize, interpret, and quantify heat and mass transfer phenomena using the numerical solution of conservation equations via computation [7,23]. In practice, the application of the CFD technique allows engineering professionals to represent complex regions of physical systems, such as animal facilities, using computational models, considering the most diverse internal and surrounding conditions [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Heat and Mass Transfer in Compost-Bedded Pack Barns for Dairy Cows Using Computational Fluid Dynamics: A Review

Oliveira,

Tinôco,

Sousa

et al. 2023

Applied Sciences

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To ensure a supply of dairy products, modern dairy farming has assumed an intensive nature, characterized by production in collective facilities with the presence of thermal conditioning, some automation level, and high-use inputs. Among the systems used for dairy cattle confinement, Compost-Bedded Pack Barns (CBPs) have been gaining importance and increasingly have been used in recent decades. CBPs must be designed and managed to ensure the best thermal comfort conditions throughout the year and, consequently, improve productivity, milk quality, and the health of the dairy herd. In this context, modeling via Computational Fluid Dynamics (CFD) emerges as a tool with huge potential for studying the thermal environmental conditions in the beds of CBPs, making it possible to improve projects and/or management practices in this kind of facility. This document is organized as a review, and its objective is to present the state of the art of the applicability of the CFD technique in the study of heat and mass transfer in CBP systems. So far, only four studies have used CFD for modeling CBP systems and have shown that the use of this tool helps to better understand the phenomena of heat and mass transfer in this kind of facility. Therefore, it is important that more studies using this technique in CBP systems be conducted, including additional considerations on constructive elements, animals, and the presence of beds in composting.

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Development of an Air-Recirculated Ventilation System for a Piglet House, Part 1: Analysis of Representative Problems through Field Experiment and Aerodynamic Analysis Using CFD Simulation for Evaluating Applicability of System

Cited by 11 publications

References 16 publications

Multi-Criteria Evaluation Model of Management for Weaned Piglets and Its Relations with Farm Performance and Veterinary Medicine Consumption

Multi-Criteria Evaluation Model of Management for Weaned Piglets and Its Relations with Farm Performance and Veterinary Medicine Consumption

Environmental Factor Detection and Analysis Technologies in Livestock and Poultry Houses: A Review

Analysis of Heat and Mass Transfer in Compost-Bedded Pack Barns for Dairy Cows Using Computational Fluid Dynamics: A Review

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