The release of hormones into the environment due to land application of biosolids and manure is a cause of concern for their potential impacts. This paper presents the development of a rapid and sensitive method, based on extraction, for the analysis of 13 hormones in biosolids and poultry manure. A simultaneous derivatization of hydroxyl and ketone groups was carried out for the determination of hormones by GC–MS/MS. The method was validated in three matrices (sewage sludge, manure, and broiler litter). Recoveries from spiked samples at three concentration levels (50, 25, and 10 ng/g) ranged from 76 to 124% with relative SDs ≤ 16%. Method detection limits for the three matrices were in the range of 0.5–3.0 ng/g dry weight. The optimized method was applied to biosolid and poultry manure samples collected in Spain. Only seven of the 13 studied hormones were detected in the different samples. trans-Androsterone was detected at high levels (up to 3.1 μg/g in biosolid samples). Estrone and estradiol were the two hormones detected at higher levels in layer manure, whereas estrone and 4-androstene-3,17-dione presented the highest levels in broiler litter.
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http://dx.doi.org/10.1002/jssc.201301037 | DOI Listing |
Poult Sci
January 2025
College of Biology and Agriculture, Shaoguan University, Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan, 512005, Guangdong, PR China. Electronic address:
Antibiotic resistance genes (ARG) pollution in poultry farming environments has become increasingly critical, primarily driven by the widespread use of antibiotics in animal husbandry. Prolonged antibiotic use has led to the emergence of ARGs and antibiotic-resistant bacteria, spreading via horizontal and vertical gene transfer. The complexity of ARG pollution in poultry farming arises from the unique farming practices, physiological characteristics of poultry, and manure management methods, with manure, wastewater, and air serving as significant vectors for ARG dissemination.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
January 2025
Department of Energy Systems Engineering, Faculty of Engineering and Architecture, Burdur Mehmet Akif Ersoy University, 15030, Burdur, Turkey.
In this study, the effect of additives on particulate matter (PM) and flue gas emissions during the co-combustion of poultry waste and pine woodchips in air and oxy-fuel combustion conditions was examined. The appropriate additive for the fuel mixture to reduce PM emissions has been selected by a fast screening method based on thermogravimetric analysis (TGA) in oxygen environment. Among the additives CaHPO, MgCO, MnCO, MgPO, kaolin, CaO, and Zn, the most suitable ones were determined as Zn and MgCO.
View Article and Find Full Text PDFToxics
January 2025
Key Laboratory of Feed Biotechnology, the Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100081, China.
Hypochlorous acid has been attempted as an additive to animal drinking water in practical animal farming processes for water microbial quality control. Despite its potential, there is still a knowledge gap concerning the effects of hypochlorous acid on both poultry growth performance and gut microbial load. To address this gap, an animal study was conducted using flow cytometry to quantify the age-related microbial load in broiler manure and gut contents.
View Article and Find Full Text PDFSci Rep
January 2025
USDA-ARS Poultry Production and Product Safety Research Unit, Fayetteville, AR, 72701, USA.
Insect farming is expected to increase in coming years, thus generating high quantities of frass (insect excreta). Frass valorization hinges on basic agronomic research prior to industry upscaling. Here, we investigated soil physiochemical properties, SMAF (Soil Management Assessment Framework) soil health, CO efflux, and bermudagrass [Cynodon dactylon (L.
View Article and Find Full Text PDFJ Environ Manage
January 2025
Thermochemical Conversion of Biomass Research Group, Department of Green Chemistry & Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Gent, Belgium.
Modern poultry production is faced with the challenge of properly managing its associated wastes, in particular chicken manure (CM). There is a need to improve the management of CM through conversion processes that allow the production of value-added products, particularly for energy purposes, such as hydrothermal carbonization (HTC) and anaerobic digestion (AD). The objectives of this study were: i) to optimize the CM-HTC, using response surface methodology with simultaneous optimization of mass yield and higher heating value (HHV), and ii) to evaluate the biomethane potential of the process water generated from hydrochar production under the optimized condition.
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