Results 191 to 200 of about 11,107 (229)

Laboratory studies of aerobic stabilization of swine waste

Journal of Agricultural Engineering Research, 1966
Pig waste was allowed to accumulate in a pit beneath a slatted-floor swine finishing building for one week or one month. Samples of this waste were brought to the laboratory for analysis and aerobic stabilization. It was concluded that adding the raw waste continuously to the aeration unit gave the best results.
R.L. Irgens, D.L. Day
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Ozonation of Swine-waste Liquids at Full-scale

2003, Las Vegas, NV July 27-30, 2003, 2003
Ozone has been shown to ameliorate the odor of swine waste during storage. Technical and economic considerations make it difficult to exploit this phenomenon at full scale. This paper describes the construction and start-up of a plant that treats about half of the waste from a 200-sow farrow-to-finish facility.
null John B. Gerrish, null Simon H. Davies, null Susan J. Masten, null Richard L. Ledebuhr, null Robert D. von Bernuth   +4 more
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Aerobic biodegradation of organic matter of swine waste

Biological Wastes, 1988
Abstract Degradation of organic matter of swine waste is dependent on the metabolic activity of the indigenous microorganisms. Although the composition of the centrifuged wastes varied, a reduction of about 80% of the chemical oxygen demand (COD) was obtained in each case when incubated at 37°C and 250 rpm without pH control.
M. Blouin, J.-G. Bisaillon, R. Beaudet, M. Ishaque   +3 more
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Two-Phase Anaerobic Digestion of Swine Waste

Transactions of the ASAE, 1977
An effort was made to design and construct an anaerobic filter for use in the production of CH/sub 4/ and volatile acids substrate from swine waste to obtain a substrate relatively free of suspended solids and with a high concentration of volatile acids.
null R. E. Smith, null M. J. Reed, null J. T. Kiker   +2 more
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Microbiological aspects of ammonia oxidation of swine waste

Canadian Journal of Microbiology, 1991
Ammonia-oxidizing bacteria were present at 102 MPN/mL (most probable number per millilitre) in swine waste, and they were outnumbered by a factor of 105 by the heterotrophs of the indigenous flora. To study these ammonia-oxidizing bacteria we attempted to isolate them in pure culture.
S. St-Arnaud, J. -G. Bisaillon, R. Beaudet   +2 more
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In Situ Measurements of Malodors of a Swine Waste Lagoon

International Symposium on Air Quality and Waste Management for Agriculture, 16-19 September 2007, Broomfield, Colorado, 2007
Obtaining data on the concentrations of malodorous compounds contained in waste lagoons is essential if the factors affecting their emission are to be described. We monitored selected compounds in a 0.4 ha lagoon that received waste from approximately 2000 sows.
null John H Loughrin, null Nanh C Lovahn, null Rezaul Mahmood   +2 more
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Technical Note: Swine Waste Characterization: A Review

Transactions of the ASABE, 2007
A substantial number of independent studies have been conducted in the field of swine waste generation and characteristics. Suggestions that swine wastes have changed due to animal practices must be verified against the database of existing swine waste characteristics.
null J. C. Barker, null M. R. Overcash
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Silage fermentation of swine waste combined with corn

European Journal of Applied Microbiology and Biotechnology, 1982
Anaerobic fermentation of feedlot swine waste combined with corn was carried out in a newly designed laboratory silo. A lactic acid fermentation with rapid odor control resulted. Initial numbers of total and lactic acid bacteria (all per dry g) were 107.
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[Disposal of aerobic treated swine waste by refeeding to finishing swine (author's transl)].

Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Erste Abteilung Originale. Reihe B: Hygiene, praventive Medizin, 1977
Simple aerobic treatment of swine waste did not increase the production of microorganismprotein (pure protein). Addition of available energy resulted in a small increase of pure protein: During continuous aerobic treatment 20 g pure protein were produced by 100 g starch, during discontinuous aerobic treatment 10 g pure protein by 100 g organic matter ...
K, Drepper, J, Kalich, P, Mielmann, U, Riemann, W, Schuh   +4 more
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Nutrient characterization of swine fecal waste and utilization of these nutrients by swine

2019
Swine feces collected from finishing hogs was fed to 48 crossbred gilts averaging 125 kg in two total collection metabolism trials. Unprocessed feces (fresh) was used in one trial and dried feces was used in the other trial. Feces from the gilts fed the feces substituted rations were significantly higher in crude fiber, ether extract, crude protein ...
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