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Flat Belt Separation System under Slat in Fattening Pig Housing: Effect of Belt Slope Angle

DOI: 10.4236/as.2018.96048, PP. 692-702

Keywords: Flat Belt, Manure, Separation and Drying Efficiency, Separation System, Swine

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Abstract:

In this study, the separation and drying efficiency of the excreta, separated into solid and liquid fraction by a flat conveyor belt under a partial slatted floor in a facility for fattening pigs, was determined. Two transverse slope angles (4° and 6°) for the flat belts were used, in a trial with pigs from 20.61 to 117.83 kg of live weight (LW), and the sample size was 7 pigs per pen, 42 pigs per room. The flat belt was more efficient with 6° than with 4° slope angle (32.65% vs. 29.91% dry matter content of solid fraction during the whole fattening period, respectively; P < 0.0001). The separation and drying efficiency of the excreta, defined as the ratio of dry matter content of the solid fraction to dry matter content of fresh faeces, were significantly higher for the angle of 6° than for the 4° (1.4137 vs. 1.3030, during the whole fattening period; P < 0.0001). With a slope angle of 6°, this efficiency was not improved in finishing period -83.40 to 117.83 kg LW (two extractions per day) with regard to the growth period -20.61 to 83.40 kg LW (one extraction per day). Meanwhile, with 4° it did improved. The ventilation system underneath slat seems to play a key role in the obtained results.

References

[1]  Daudén, A., Quílez, D. and Vera, M.V. (2004) Pig Slurry Application and Irrigation Effects on Nitrate Leaching in Mediterranean Soil Lysimeters. Journal of Environmental Quality, 33, 2290-2295.
https://doi.org/10.2134/jeq2004.2290
[2]  Baird, C., Humenik, M., Rice, M., Classen, J., Liehr, S., Zering, K. and Van Heugten, E. (2004) Belt System for Manure Removal. Project Report for North Carolina Attorney General Agreement Initiative, Animal and Poultry Waste Management Center North Carolina State University, Raleigh, NC.
[3]  Ogink, N.W.M., Willers, H.C., Aarnink, A.J.A. and Satter, I.H.G. (2000) Development of a New Pig Production System with Integrated Solutions for Emission Control, Manure Treatment and Animal Welfare Demands. Swine Housing First International Conference ASAE, Des Moines, IA, 253-259.
[4]  Vázquez, J., Garcimartín, M.A., Ovejero, I. and Daza, A. (2001) A New Integral System for Waste Management in Pig Housing, Based on a Special and Adjustable Floor Belt under Partial Slat, to Avoid Slurry Production. Sixth International Livestock Environment Symposium, Louisville, KY.
[5]  Van Kempen, T., Kaspers, B., Burnette, P., Van Kempen, M. and Koger, J.B. (2003) Swine Housing with a Belt for Separating Urine and Faeces; Key to Flexibility. Swine Housing II. Proceedings of Conference Research Triangle, Park, NC, 159-165.
[6]  Lachance, I., Godbout, S., Marquis, A., Larouche, J.P. and Pouliot, F. (2005) Separation of Pig Manure under Slats: to Reduce Releases in the Environment. ASABE Annual International Meeting, Tampa, FL, 17-20 July 2005, Article No. 054159.
https://doi.org/10.13031/2013.19914
[7]  Alonso, F., Vázquez, J., Sánchez, E., Ovejero, I., Mateos, A. and Garcimartín, M.A. (2008) Comparison of Dry Matter Content of Pig Faeces in Two Belt Separation Systems. Proceedings of VIII International Livestock Environment Symposium, ASABE’s ILES VIII, Iguassu Falls City, 1059-1062.
[8]  Alonso, F., Vázquez, J., Ovejero, I., Garcimartín, M.A., Mateos, A. and Sánchez, E. (2010) Belt Separation System under Slat in Fattening Pig Housing: Effect of Belt Type and Extraction Frequency. Bioresource Technology, 101, 6230-6234.
https://doi.org/10.1016/j.biortech.2010.02.106
[9]  Ovejero, I., Daza, A., Garcimartín, M.A. and Vázquez, J. (2004) Design of an Experimental Fattening Pig Housing: Part I, Climatic Control. International Symposium of the International Commission of Agricultural Engineering (CIGR), Evora, 2-6 May 2004.
[10]  Koger, J.B., O’Brien, B.K., Burnette, R.P., Kai, P., Van Kempen, M.H.J.G., Van Heugten, E. and Van Kempen, T.A.T.G. (2014) Manure Belts for Harvesting Urine and Faeces Separately and Improving Air Quality in Swine Facilities. Livestock Science, 162, 214-222.
https://doi.org/10.1016/j.livsci.2014.01.013
[11]  Aarnink, A.J.A. and Ogink, N.W.M. (2007) Environmental Impact of Daily Removal of Pig Manure with a Conveyer Belt System. International Symposium on Air Quality and Waste Management for Agriculture, Broomfield, CO, 16-19 September 2007.

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