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https://www.readbyqxmd.com/read/29329262/contamination-and-risk-assessment-of-estrogens-in-livestock-manure-a-case-study-in-jiangsu-province-china
#1
Pengcheng Xu, Xian Zhou, Defu Xu, Yanbing Xiang, Wanting Ling, Mindong Chen
This study investigated the occurrence and contamination risk of estrogens in livestock manure in Jiangsu Province, China. Four estrogens-estriol (E3), 17β-estradiol (17β-E2), bisphenol A (BPA), and 17α-ethinyloestradiol (EE2)-were detected in livestock manure from hens, ducks, swine, and cows. The respective mean concentrations of each estrogen found in these manures were 289.8, 334.1, 330.3, and 33.7 μg/kg for E3; 38.6, 10.9, 52.9, and 38.8 μg/kg for 17β-E2; 63.6, 48.7, 51.9, and 11.7 μg/kg for BPA; and 14...
January 12, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29238606/effects-of-amino-acid-composition-in-pig-diet-on-odorous-compounds-and-microbial-characteristics-of-swine-excreta
#2
Neeraja Recharla, Kihyun Kim, Juncheol Park, Jinyoung Jeong, Yongdae Jeong, Hyunjeong Lee, Okhwa Hwang, Jaehyoung Ryu, Youlchang Baek, Youngkyun Oh, Sungkwon Park
Background: Major amino acids in pig diets are Lys, Met, Thr, and Trp, but little is known about the requirements for the other essential amino acids, especially on odorous compounds and microbial characteristics in feces of growing-finishing pigs. To this end, different levels of amino acid composition added to diets to investigate the effects of amino acid composition on microbial characteristics and odorous compounds concentration. Methods: A total eight (n = 8) barrows (Landrace × Yorkshire × Duroc) with an average bodyweight of 89...
2017: Journal of Animal Science and Technology
https://www.readbyqxmd.com/read/29211053/impacts-of-small-scale-industrialized-swine-farming-on-local-soil-water-and-crop-qualities-in-a-hilly-red-soil-region-of-subtropical-china
#3
Di Zhang, Xingxiang Wang, Zhigao Zhou
Industrialized small-scale pig farming has been rapidly developed in developing regions such as China and Southeast Asia, but the environmental problems accompanying pig farming have not been fully recognized. This study investigated 168 small-scale pig farms and 29 example pig farms in Yujiang County of China to examine current and potential impacts of pig wastes on soil, water and crop qualities in the hilly red soil region, China. The results indicated that the small-scale pig farms produced considerable annual yields of wastes, with medians of 216, 333 and 773 ton yr-1 per pig farm for manure, urine and washing wastewater, respectively, which has had significant impact on surface water quality...
December 6, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29194353/reproductive-disorders-and-leptospirosis-a-case-study-in-a-mixed-species-farm-cattle-and-swine
#4
Marcella Mori, Raïssa Bakinahe, Philippe Vannoorenberghe, Jo Maris, Ellen de Jong, Marylène Tignon, Martine Marin, Damien Desqueper, David Fretin, Isabelle Behaeghel
Animal leptospirosis, exempt in rodents, manifests as peculiar biology where the animal can function, simultaneously or not, as a susceptible host or reservoir. In the first case, clinical symptoms are likely. In the second case, infection is subclinical and manifestations are mild or absent. Mild clinical symptoms encompass reproductive failure in production animals for host-adapted Leptospira sp. serovars. This work presents a study on Leptospira sp. infection in a mixed-species (bovine and swine) farm with documented reproductive disorders in the cattle unit...
December 1, 2017: Veterinary Sciences
https://www.readbyqxmd.com/read/29194008/removal-of-excess-nutrients-by-australian-zeolite-during-anaerobic-digestion-of-swine-manure
#5
D Thushari N Wijesinghe, Kithsiri B Dassanayake, Peter Scales, Sven G Sommer, Deli Chen
The objective of this study was to investigate the feasibility of using natural and NaCl-treated Australian zeolites to simultaneously remove excess nutrients from anaerobically digested swine manure. Ion adsorption and desorption properties of Australian zeolite during the anaerobic digestion of swine manure were investigated. Two experiments were conducted: the first was an adsorption experiment with multi-component solutions that corresponded with the ionic composition of swine manure digestates. The ionic composition of swine manure digestates...
December 1, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29174902/antibiotic-degradation-and-microbial-community-structures-during-acidification-and-methanogenesis-of-swine-manure-containing-chlortetracycline-or-oxytetracycline
#6
Fubin Yin, Hongmin Dong, Wanqin Zhang, Zhiping Zhu, Bin Shang
Anaerobic digestion (AD) has been applied to animal manure stabilization, and antibiotics is frequently found in animal manure. However, antibiotic degradation and microbial community structures during two-stage AD (acidification and methanogenesis) remain poorly understood. This experiments on two-stage anaerobic swine manure digesters were performed to investigate the degradation mechanisms and effects of chlortetracycline (CTC) and oxytetracycline (OTC) on microbial community structures. Results showed that acidification and methanogenesis showed good degradation performance for manure containing CTC and OTC at 60 and 40 mg/kg·TS, respectively...
November 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29164458/phosphorus-speciation-and-release-kinetics-of-swine-manure-biochar-under-various-pyrolysis-temperatures
#7
Xinqiang Liang, Yi Jin, Miaomiao He, Christophe Niyungeko, Jin Zhang, Chunlong Liu, Guangming Tian, Yuji Arai
Converting swine manure to biochar is an effective way to recycle valuable nutrients, but there are few reports on its feasibility as a phosphorus (P) source. The objective of this study was to clarify the unique nature, including P speciation, of manure biochar products under various pyrolysis temperatures. We used solution 31P nuclear magnetic resonance and P K-edge X-ray adsorption near-edge spectroscopy (P XANES) to characterize P species in swine manure biochar. For every 100 °C increment starting from 300 °C, the P content in manure biochar increased by 2...
November 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29147640/robinsoniella-peoriensis-infection-related-to-right-femoral-hardware
#8
Justin Schmetterer, Joseph Gorvetzian, Shaun Yang
Discovered in swine manure relatively recently, Robsinoniella peoriensis is a gram-positive anaerobic bacilli that has been reported to cause human infections. Its antimicrobial susceptibility, epidemiology and overall pathogenicity are still not fully understood. We report a case of a hardware related soft tissue infection in the right femur caused by Robinsoneilla peoriensis following an open reduction internal fixation in a 67 year old immunocompetent woman. The patient was successfully treated with six weeks of ertapenem...
2017: IDCases
https://www.readbyqxmd.com/read/29140644/evaluation-of-low-cost-hydrogen-sulfide-monitors-for-use-in-livestock-production
#9
Jessica M Beswick-Honn, Thomas M Peters, T Renée Anthony
Direct-reading gas monitors warn workers of the risk of potentially fatal hydrogen sulfide (H2S) exposures that may arise during manure handling. Low-cost, low-maintenance H2S monitors are available from many manufacturers, but differences in their features and performance make selection challenging for farmers. Moreover, little information is available on the practical maintenance and performance of these devices in agricultural environments. The objective of this study was to provide information to agricultural workers to aid in the selection, maintenance, and use of low-cost H2S monitors...
November 20, 2017: Journal of Agricultural Safety and Health
https://www.readbyqxmd.com/read/29137887/effects-of-chlortetracycline-on-the-fate-of-multi-antibiotic-resistance-genes-and-the-microbial-community-during-swine-manure-composting
#10
Zhiqiang Chen, Yao Wang, Qinxue Wen
Excessive use of antibiotics in breeding industry leads to accumulation of antibiotic residuals and antibiotic resistance genes (ARGs) in environment from improperly treated livestock excrements. Four commonly used veterinary antibiotics including chlortetracycline (CTC), sulfamerazine (SMZ), enrofloxacin (ENR) and erythromycin (ERY) were monitored in the swine manure composting. Co-resistance and cross-resistance effects among relative ARGs, correlations between ARGs and bacterial community under multiple antibiotics residual during the composting were investigated in this research...
November 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29131711/aerobic-treatment-of-swine-manure-to-enhance-anaerobic-digestion-and-microalgal-cultivation
#11
Dominic Bekoe, Lijun Wang, Bo Zhang, Matthew Scott Todd, Abolghasem Shahbazi
Aerobic treatment of swine manure was coupled with anaerobic digestion and microalgal cultivation. A 14-day aerobic treatment reduced the total solid content of swine manure by >15%. Ammonia and carbon dioxide were stripped by the air supplied, and this off-gas was further used to aerate the culture of Chlorella vulgaris. The microalgal growth rates in Bristol medium and the wastewater with the off-gas increased from 0.08 to 0.22 g/L/d and from 0.15 to 0.24 g/L/d, respectively. Meanwhile, the aerobically treated swine manure showed a higher methane yield during anaerobic digestion...
November 13, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29126051/oxidation-resistance-of-biochars-as-a-function-of-feedstock-and-pyrolysis-condition
#12
Lanfang Han, Kyoung S Ro, Yu Wang, Ke Sun, Haoran Sun, Judy A Libra, Baoshan Xing
Assessing biochar's ability to resist oxidation is fundamental to understanding its potential to sequester carbon. Chemical oxidation exhibits good performance in estimating the oxidation resistance of biochar. Herein, oxidation resistance of 14 types of biochars produced from four feedstocks at different pyrolysis conditions (hydrothermal versus thermal carbonization) was investigated via hydrogen peroxide oxidation with varying concentrations. The oxidation resistance of organic carbon (C) of hydrochars was relatively higher than that of 250°C pyrochars (P250) but was comparable to that of 450°C pyrochars (P450)...
November 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29102181/microwave-digestion-assisted-hfo-biochar-adsorption-to-recover-phosphorus-from-swine-manure
#13
Tao Zhang, Haoyu Xu, Huanhuan Li, Xinyue He, Yuanji Shi, Andrea Kruse
A sustainable management option for dealing with waste straw is to pyrolyze it to create biochar, which can then be used as a sorbent in pollution treatments, such as the recovery of phosphorus (P) from swine manure. However, the inability to directly capture soluble organic P (OP) and sparingly soluble P and the low selectivity of biochar remain key issues in this process. To overcome these, we investigated a microwave (MW) digestion pretreatment with a HFO/biochar adsorption process. The MW digestion-assisted treatment showed good performance for the solubilization of OP and sparingly soluble P...
October 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29094590/discrepancies-and-uncertainties-in-bottom-up-gridded-inventories-of-livestock-methane-emissions-for-the-contiguous-united-states
#14
Alexander Hristov, Michael Harper, Robert Meinen, Rick Day, Juliana Lopes, Troy L Ott, Aranya Venkatesh, Cynthia A Randles
In this analysis we used a spatially-explicit, simplified bottom-up approach, based on animal inventories, feed dry matter intake, and feed intake-based emission factors to estimate county-level enteric methane emissions for cattle and manure methane emissions for cattle, swine, and poultry for the contiguous United States. Overall, this analysis yielded total livestock methane emissions (8,916 Gg/yr; lower and upper 95% confidence bounds of ±19.3%) for 2012 (last census of agriculture) that are comparable to the current USEPA estimates for 2012 and to estimates from the global gridded Emission Database for Global Atmospheric Research (EDGAR) inventory...
November 2, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29090625/application-of-bacillus-sp-tat105-to-reduce-ammonia-emissions-during-pilot-scale-composting-of-swine-manure
#15
Kazutaka Kuroda, Akihiro Tanaka, Kenich Furuhashi, Kiyohiko Nakasaki
Thermophilic ammonium-tolerant bacterium Bacillus sp. TAT105 grows and reduces ammonia (NH3) emissions by assimilating ammonium nitrogen during composting of swine feces. To evaluate the efficacy of a biological additive containing TAT105 at reducing NH3 emissions, composting tests of swine manure on a pilot scale (1.8 m(3)) were conducted. In the TAT105-added treatment, NH3 emissions and nitrogen loss were lower than those in the control treatment without TAT105. No significant difference was detected in losses in the weight and volatile solids between the treatments...
November 1, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/29068326/swine-manure-treatment-by-anaerobic-membrane-bioreactor-with-carbon-nitrogen-and-phosphorus-recovery
#16
Fan Bu, Shiyun Du, Li Xie, Rong Cao, Qi Zhou
Swine manure wastewater was treated in an anaerobic membrane bioreactor (AnMBR) that combined a continuous stirred tank reactor (CSTR) and a hollow-fiber ultrafiltration membrane, and the feasibility of ammonia and phosphorus recovery in the permeate was investigated. The AnMBR system was operated steadily with a high mixed liquor suspended solids (MLSS) concentration of 32.32 ± 6.24 g/L for 120 days, achieving an average methane yield of 280 mL/gVSadded and total chemical oxygen demand removal efficiency of 96%...
October 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29057890/effect-of-nitrate-leaching-caused-by-swine-manure-application-in-fields-of-the-yellow-river-irrigation-zone-of-ningxia-china
#17
Shiqi Yang, Yongsheng Wang, Ruliang Liu, Aiping Zhang, Zhengli Yang
A five-year swine manure application trial and a study of nitrate leaching losses have been conducted. There were three treatments: traditional without manure (CK), traditional matched manure 4500 kg ha(-2) (T1) and traditional matched manure 9000 kg ha(-2) (T2). Nitrate nitrogen leaching losses at the 30-, 60-, and 90-cm soil layers were measured using the resin core method. The results indicate that the swine manure application did not noticeably increase soil nitrate leaching losses in the 30-cm layer...
October 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29056384/different-methods-of-incorporating-ciprofloxacin-in-soil-affect-microbiome-and-degradation-of-ciprofloxacin-residue
#18
Longyong Liu, Jiandui Mi, Yan Wang, Yongde Zou, Baohua Ma, Xindi Liao, Juan Boo Liang, Yinbao Wu
Antibiotic residues in swine manure when entered the soil would most likely affect the complex composition and functions of the soil microbiome, which is also responsible for degrading these antibiotics. Three different methods of adding ciprofloxacin (CIP), a common antibiotic used in the swine industry, to the soil were used to investigate the effects of CIP on the soil microbiome and the degradation of CIP. Results of the study showed that the microbiome could promote the degradation of CIP in the soil when CIP was incorporated into the soil together with manure...
October 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29054657/feed-additives-shift-gut-microbiota-and-enrich-antibiotic-resistance-in-swine-gut
#19
Yi Zhao, Jian-Qiang Su, Xin-Li An, Fu-Yi Huang, Christopher Rensing, Kristian Koefoed Brandt, Yong-Guan Zhu
Antibiotic resistance genes (ARGs) are emerging environmental contaminants posing a threat to public health. Antibiotics and metals are widely used as feed additives and could consequently affect ARGs in swine gut. In this study, high-throughput quantitative polymerase chain reaction (HT-qPCR) based ARG chip and next-generation 16S rRNA gene amplicon sequencing data were analyzed using multiple statistical approaches to profile the antibiotic resistome and investigate its linkages to antibiotics and metals used as feed additives and to the microbial community composition in freshly collected swine manure samples from three large-scale Chinese pig farms...
October 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28968533/using-the-agricultural-environment-to-select-better-surrogates-for-foodborne-pathogens-associated-with-fresh-produce
#20
Kimberly L Cook, Ethan C Givan, Holly M Mayton, Rohan R Parekh, Ritchie Taylor, Sharon L Walker
Despite continuing efforts to reduce foodborne pathogen contamination of fresh produce, significant outbreaks continue to occur. Identification of appropriate surrogates for foodborne pathogens facilitates relevant research to identify reservoirs and amplifiers of these contaminants in production and processing environments. Therefore, the objective of this study was to identify environmental Escherichia coli isolates from manures (poultry, swine and dairy) and surface water sources with properties similar to those of the produce associated foodborne pathogens E...
December 4, 2017: International Journal of Food Microbiology
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