Results 211 to 220 of about 56,624 (248)

Regulation of fungal communities during pig manure composting

Bioresource Technology, 2023
The role of protein shell (PS) amendment in altering the fungal community during pig manure (PM) composting was investigated. Six different dosages of PS based on the dry weight of PM (0 %, 2.5 %, 5 %, 7.5 %, 10 %, and 12 %; T1-T6, respectively) were mixed with wheat straw to make the initial feedstock and composted for 42 days. The results showed that
Sanjeev Kumar Awasthi, Shivpal Verma, Tao Liu, Mukesh Kumar Awasthi, Zengqiang Zhang, Asad Syed, Ali H. Bahkali   +6 more
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Evaluation of physical properties of pig manure

Journal of Agricultural Engineering Research, 1974
Abstract 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 Respiration Rate of Composting Pig Manure

Compost Science & Utilization, 2004
The 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, Claire Turner, Adrian G. Williams, Andrew J. Barker, Stuart Guy   +4 more
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The vermicomposting of pre-treated pig manure

Biological Wastes, 1988
Abstract 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, 2001
Ten 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, null Peter de Gijsel   +1 more
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Composting pig manure in Hong Kong

1998
http://deepblue.lib.umich.edu/bitstream/2027.42/191283/2/JA5-1998-PDF.pdf ; Published ...
Tiquia, SM, Tam, NFY
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Effect of C/N on composting of pig manure with sawdust

Waste Management, 2004
The 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, J W C, Wong, Q T, Wu, B B, Nagar   +3 more
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Infectivity of PRRS virus in pig manure at different temperatures

Veterinary Microbiology, 2012
PRRSv 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, Montserrat, Torremorell, Han Soo, Joo, Robert B, Morrison   +3 more
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Economic analyses of pig manure treatment options in Ireland

Bioresource Technology, 2012
An economic analysis was performed on treatment options for pig manure in Ireland. Costs were based on a 500 sow integrated pig farm producing 10,500 m(3) of manure per year at 4.8% dry matter. The anaerobic digestion of pig manure and grass silage (1:1; volatile solids basis) was unviable under the proposed tariffs, with costs at € 5.2 m(-3) manure ...
Nolan, Tereza, Troy, Shane M, Gilkinson, Stephen, Frost, J P, Xie, Sihuang, Zhan, Xinmin, Harrington, Caolan, Healy, Mark, Lawlor, Peadar G   +8 more
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Removal of antibiotics during the anaerobic digestion of pig manure

Science of The Total Environment, 2017
Antibiotics 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, Mònica Escolà Casas, Lars Ditlev Mørck Ottosen, Henrik Bjarne Møller, Kai Bester   +4 more
openaire   +2 more sources