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Evaluation of physical properties of pig manure
Journal of Agricultural Engineering Research, 1974Abstract This investigation reports the results obtained in evaluating the physical properties of pig manure during the course of feeding trials with emphasis on density, viscosity and calorific value. In the case of calorific value, values of 17·9 MJ/kg dried faeces have been obtained and this quantity of heat will contribute significantly in any ...
J.R. Backhurst, J.H. Harker
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The vermicomposting of pre-treated pig manure
Biological Wastes, 1988Abstract This paper reports the results of a study of vermicomposting of pre-treated pig manure in Hong Kong using the earthworm Eisenia foetida . Pig manure was first composted, supplemented with 4% calcium sulphate and then washed before feeding to worms. Worms fed untreated pig manure died within 24 h.
Paul L.S. Chan, D.A. Griffiths
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Systems for Pig Manure Treatment in The Netherlands
2001 Sacramento, CA July 29-August 1,2001, 2001Ten pig manure treatment systems that were regarded promising from both economical, technical and ecological point of view were selected for research. The performance of the systems was tested during four weeks. The raw material and all products were analyzed on DM, Ash, P, N-total, N-NH4 + and K and gaseous emission of odor, NH3, CH4, N2O, and CO2
null Roland W. Melse +1 more
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The Respiration Rate of Composting Pig Manure
Compost Science & Utilization, 2004The rate at which oxygen is consumed during composting is a measure of aerobic microbial activity and is linked to the rate of organic material decomposition. The rate of loss in mass is a function of the mass of the degradable organic fraction and is related to oxygen uptake rate by the reaction rate coefficient, k.
Angela L. Cronjé +4 more
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Concentrations of Additive Arsenic in Beijing Pig Feeds and the Residues in Pig Manure
Resources, Conservation and Recycling, 2005The swine industry in China has grown rapidly over last two decades. Great amount of pig manure is generated in China, which can be used as organic fertilizers on agricultural lands. Meanwhile, the organic arsenic compounds have been used as feed additives for swine disease control and weight improvement.
Tong-Bin Chen, Yan-Xia Li
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Effect of C/N on composting of pig manure with sawdust
Waste Management, 2004The aim of this composting trial was to evaluate the effect of C/N on the composting process of pig manure with the purpose of reducing the amount of sawdust normally used as co-composting materials. Two aerobic static piles were prepared consisting of pig manure mixed with sawdust at an initial C/N of 30 (pile A) and 15 (pile B), respectively.
G F, Huang +3 more
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Composting pig manure in Hong Kong
1998http://deepblue.lib.umich.edu/bitstream/2027.42/191283/2/JA5-1998-PDF.pdf ; Published ...
Tiquia, SM, Tam, NFY
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Infectivity of PRRS virus in pig manure at different temperatures
Veterinary Microbiology, 2012PRRSv is an economically important swine pathogen which can be disseminated from infected pig herds via movement of contaminated manure. The process of manure handling and inadequate cleaning of transport vehicles are commonly implicated as sources of PRRSv transmission. Stability of PRRSv in pig manure at different temperatures is unknown.
Daniel C L, Linhares +3 more
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Removal of antibiotics during the anaerobic digestion of pig manure
Science of The Total Environment, 2017Antibiotics are frequently used in animals to treat sickness and prevent infection especially in industrial meat production. Some of the antibiotics cannot be completely metabolized and, as an unavoidable result, are excreted and thus end up in manure which is then spread in the environment.
Lu Feng +4 more
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Nutrient transformation of pig manure under pig-on-litter system
1996A ten-month study was carried out in an experimental farm in Hong Kong to investigate the changes in the forms and content of carbon, nitrogen, phosphorus and potassium of the pig manure under a pig-on-litter (POL) system. This system, known as in-situ composting, utilizes a mixture of sawdust and a commercial bacterial product as the bedding material ...
Tam, NFY, Tiquia, SM, Vrijmoed, LLP
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