Research and demonstration to improve air quality for the U.S. animal feeding operations in the 21st century – A critical review

Ni, Ji‐Qin

doi:10.1016/j.envpol.2015.02.003

Cited by 36 publications

(20 citation statements)

References 158 publications

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“…Breast muscle tissue is important in broilers, which is the main source of chicken meat [ 28 , 29 ]. Alterations in muscles metabolism pathways induced by longtime ammonia exposure may lead to the decline of meat yields and eating quality [ 12 , 23 , 30 , 31 ]. In the present study, high-throughput transcriptomic analysis was performed to elucidate the molecular mechanisms in broiler muscles exposed to high and low concentrations of aerial ammonia.…”

Section: Discussionmentioning

confidence: 99%

High concentrations of atmospheric ammonia induce alterations of gene expression in the breast muscle of broilers (Gallus gallus) based on RNA-Seq

Chen

et al. 2016

BMC Genomics

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BackgroundHigh concentrations of atmospheric ammonia are one of the key environmental stressors affecting broiler production performance, which causes remarkable economic losses as well as potential welfare problems of the broiler industry. Previous reports demonstrated that high levels of ammonia altered body fat distribution and meat quality of broilers. However, the molecular mechanisms and metabolic pathways in breast muscle altered by high concentrations of ambient ammonia exposure on broilers are still unknown.ResultsThis study utilized RNA-Seq to compare the transcriptomes of breast muscles to identify differentially enriched genes in broilers exposed to high and low concentrations of atmospheric ammonia. A total of 267 promising candidate genes were identified by differential expression analysis, among which 67 genes were up-regulated and 189 genes were down-regulated. Bioinformatics analysis suggested that the up and down-regulation of these genes were involved in the following two categories of cellular pathways and metabolisms: Steroid biosynthesis (gga00100) and peroxisome proliferator-activated receptor (PPAR) signaling pathway (gga03320), which both participated in the lipid metabolism processes.ConclusionsThis study suggests that longtime exposure to high concentrations of aerial ammonia can change fat content in breast muscle, meat quality and palatability via altering expression level of genes participating in important lipid metabolism pathways. These findings have provided novel insights into our understanding of molecular mechanisms of breast muscles exposed to ammonia in broilers. This study provides new information that could be used for genetic breeding and nutritional intervention in production practice of broilers industry in the future.Electronic supplementary materialThe online version of this article (doi:10.1186/s12864-016-2961-2) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

High concentrations of atmospheric ammonia induce alterations of gene expression in the breast muscle of broilers (Gallus gallus) based on RNA-Seq

Chen

et al. 2016

BMC Genomics

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“…A reduction in odor emitted from AFOs can be achieved by reducing particulate matter, since particulate matter is a known odor transport vector. Several post-emission mitigation strategies have been employed to absorb or deflect particulate emissions (Ni 2015). Vegetative environmental buffers (VEBs) are one technology commonly used.…”

Section: Introductionmentioning

confidence: 99%

Particulate capture efficiency of a vegetative environmental buffer surrounding an animal feeding operation

Willis

Eichinger

Prueger

et al. 2017

Agriculture, Ecosystems & Environment

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Particulate matter emitted from tunnel-ventilated animal feeding operations (AFOs) is known to transport malodorous compounds. As a mitigation strategy, vegetative environmental buffers (VEBs) are often installed surrounding AFOs to capture particulates and induce lofting and dispersion. Currently, point measurements are the primary means by which VEB performance has been investigated. The existing techniques lack spatial and temporal resolution and fail to assign the observed particulate reduction to capture, lofting, or dispersion. This study presents a technique for estimating the capture efficiency of a VEB using lidar and attributes all observed reduction to particulate capture, thereby delineating the effects of capture and lofting. The experiments revealed a capture efficiency ranging from 21-74%. Instantaneous lidar scans showed periodic lofting well above the VEB, but when scans were averaged over several hours, the plumes appeared Gaussian. This paper documents experimental evidence quantifying the capture efficiency of a VEB. It also establishes an experimental framework for future studies on the efficacy of various emissions mitigation strategies.

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“…Exposure of many of these pollutants has indeed been identified as the causes of diverse (both acute and chronic) health problems4. To date, many types of conventional technologies employing diverse classes of materials (e.g., activated carbon, zeolites, and hybrid materials) have been tested for their feasibility toward chemical and physical sorption applications5. These technologies have a number of shortcomings or limitations including limited adsorption capacity, toxic end products, and high energy costs for regeneration6.…”

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confidence: 99%

Metal organic frameworks as sorption media for volatile and semi-volatile organic compounds at ambient conditions

Vellingiri

Szulejko

Kumar

et al. 2016

Sci Rep

140

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In this research, we investigated the sorptive behavior of a mixture of 14 volatile and semi-volatile organic compounds (four aromatic hydrocarbons (benzene, toluene, p-xylene, and styrene), six C2-C5 volatile fatty acids (VFAs), two phenols, and two indoles) against three metal-organic frameworks (MOFs), i.e., MOF-5, Eu-MOF, and MOF-199 at 5 to 10 mPa VOC partial pressures (25 °C). The selected MOFs exhibited the strongest affinity for semi-volatile (polar) VOC molecules (skatole), whereas the weakest affinity toward was volatile (non-polar) VOC molecules (i.e., benzene). Our experimental results were also supported through simulation analysis in which polar molecules were bound most strongly to MOF-199, reflecting the presence of strong interactions of Cu2+ with polar VOCs. In addition, the performance of selected MOFs was compared to three well-known commercial sorbents (Tenax TA, Carbopack X, and Carboxen 1000) under the same conditions. The estimated equilibrium adsorption capacity (mg.g−1) for the all target VOCs was in the order of; MOF-199 (71.7) >Carboxen-1000 (68.4) >Eu-MOF (27.9) >Carbopack X (24.3) >MOF-5 (12.7) >Tenax TA (10.6). Hopefully, outcome of this study are expected to open a new corridor to expand the practical application of MOFs for the treatment diverse VOC mixtures.

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Research and demonstration to improve air quality for the U.S. animal feeding operations in the 21st century – A critical review

Cited by 36 publications

References 158 publications

High concentrations of atmospheric ammonia induce alterations of gene expression in the breast muscle of broilers (Gallus gallus) based on RNA-Seq

High concentrations of atmospheric ammonia induce alterations of gene expression in the breast muscle of broilers (Gallus gallus) based on RNA-Seq

Particulate capture efficiency of a vegetative environmental buffer surrounding an animal feeding operation

Metal organic frameworks as sorption media for volatile and semi-volatile organic compounds at ambient conditions

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