Objective: To observe the change of housefly (Musca domestica) breeding in the pig manure treated ecologically with its larvae.
Methods: The number of eggs and the hatching rate of larvae in the treated manure were compared with that in the untreated manure.
Results: The number of eggs laid in the treated manure accounted for only 17.7% of the total eggs, while those in the untreated manure accounted for 82.3%. The hatching rate in the treated manure was 41.4 %, but 85.1% in the untreated manure.
Conclusion: There is a significant reduction of eggs laid and of their hatching rate in the pig manure treated ecologically by housefly larvae.
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Sci Total Environ
January 2025
Lab of Animal Ecology and Environmental Control, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, PR China; State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, PR China. Electronic address:
Organic fertilizers were produced through maggot-composting (MC) and natural composting (NC) using swine manure, and the migration, contamination, and health risks of heavy metals (Zn, Cu, Cd, Cr, Pb) were evaluated within a fertilizer - soil - ryegrass - Rex rabbit system. After 70 days of treatment, heavy metals were concentrated by 43.23 % to 100 % in MC and 52.
View Article and Find Full Text PDFSci Rep
December 2024
College of Resources and Environment, Department of Environment Science and Engineering, Southwest University, Chongqing, 400715, China.
A pot experiment was conducted on arsenic (As) and cadmium (Cd) co-contaminated soil to discern the influence of varying proportions of pig manure compost (PM) vis-à-vis chemical fertilizers (NPK) on the mitigation of Cd and As absorption by rice. Our findings illustrated that by increasing the PM proportions from 25 to 100%, it manifested a statistically significant reduction in the mobilized fractions of Cd, accounting for up to 77% reduction in soil CaCl-Cd concentrations. Conversely, the NaHCO-As reactions were contingent on the distinct PM application rates.
View Article and Find Full Text PDFJ Nutr
December 2024
Department of Animal Science, College of Food, Agricultural and Natural Resource Sciences, University of Minnesota, St. Paul, MN, United States. Electronic address:
We have exceeded the earth's carrying capacity to manage the amount of nitrogen (N) waste being generated globally, which can have devastating environmental consequences if immediate action is not taken. Our global food system is a major N user and contributor to N waste. Pork is the most consumed animal-derived protein source in the world, but like other food producing animals, the nitrogen use efficiency of converting dietary protein to edible lean meat is less than 50%.
View Article and Find Full Text PDFHuan Jing Ke Xue
January 2025
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
In this investigation, the influence of organic amendment on the structural and functional dynamics of soil microbial communities and its effect on rice productivity were examined. Five fertilization treatments from a 40-year field experiment were selected: no fertilizer (CK), inorganic NPK fertilizer (NPK), inorganic NPK combined with green manure (NG), inorganic NPK combined with green manure and pig manure (NGM), and inorganic NPK combined with green manure and rice straw (NGS). The findings revealed that the organic amendment enhanced the soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) levels, alongside an increase in rice yield; notably, the most significant improvements were observed with the NGM treatment.
View Article and Find Full Text PDFHuan Jing Ke Xue
January 2025
State Key Laboratory of Subtropical Silviculture, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China.
Sorption and transport are important environmental behaviors of antibiotics in soils and can determine the fate of antibiotics in environments; however, limited relevant studies have been conducted on long-term manured soils. In this study, batch and repacked soil column experiments were conducted to examine the sorption and transport behavior of four veterinary antibiotics, including sulfamethazine (SMT), florfenicol (FFC), doxycycline (DOX), and enrofloxacin (ENR), in red soils, yellow soils, and calcareous soils with long-term amendment of chicken or pig manure collected in Zhejiang Province. The results showed that the sorption isothermal data of the four target antibiotics all conformed well to the linear and Freundlich models.
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