News Update on Poultry Manure Research: Dec – 2019

Poultry manure management: Environmentally sound options

Increases within the demand for poultry products have led to rapid and concentrated growth of the industry, which has caused excessive manure supplies in certain areas. Although poultry litter is one among the simplest organic fertilizers available, and is a particularly valuable resource, excessive land application rates can cause nitrate leaching into groundwater, phosphorus (P) runoff into adjacent water bodies, and possibly cause elevated bacterial or viral pathogen levels in lakes and rivers. Approximately 13 million Mg (14 million tons) of litter and manure was produced on U.S. poultry farms in 1990, most of which (68%) was broiler litter. apart from small amounts utilized in animal feed, the main portion (>90%) of poultry litter produced is applied to agricultural land. Adverse impacts resulting from land application of poultry manure could also be prevented by implementation of effective best management practices (BMPs). [1]

Reducing Nitrogen Losses during Simulated Composting of Poultry Manure using Adsorbents or Chemical Amendments

Ammonia emissions during composting of poultry manure are often significant, representing increased environmental pollution and decreased fertilizer value of manure. The objectives of this study were to live NH3 volatilization losses during composting of poultry layer manure, and to guage the potential of various amendments to scale back NH3 losses employing a laboratory composting simulator. The poultry manure was treated with various amendments including two natural zeolites, clay, coir (mesocarp of coconut fruit), CaCl2, CaSO4, MgCl2, MgSO4, and Al2(SO4)3. The manure was composted for 49 to 56 d. Ammonia volatilized from the manure was trapped during a 0.3 M H2SO4 solution. The composts were weighed and analyzed for moisture content, total N and NH+4. [2]

Optimization of biogas production by co-digesting whey with diluted poultry manure

A series of laboratory experiments were performed in continuously stirred tank reactors at mesophilic conditions, fed semi-continuously with various mixtures of diluted poultry manure and whey. Co-digestion of whey with manure was proved to be possible with none need of chemical addition up to 50% participation of whey (by volume) to the daily feed mixture. Up to the present point, specific biogas production (L/kg VSin) remained roughly unchanged at the varied whey fractions added within the feed mixture, mainly thanks to the lower chemical oxygen demand (COD) of whey compared thereto of manure. At whey fractions above 50%, the reactor turned to be unstable, as shown by the considerable decrease in pH and biogas production. [3]

Dried Poultry Manure

THE possibility of creating better use of poultry manure is receiving considerable attention at this time and within the Journal of the Ministry of Agriculture (vol. 39, p. 656) R. Sayce and F. Hanley give a stimulating account of the assembly of kilndried poultry manure. The kiln, which is extremely almost like that utilized in maltings, may be a ventilated brick building with a corrugated asbestos roof which is lined with asbestos sheeting. it’s heated with a standard coke furnace and a system of flues. After a preliminary drying within the air for about two days, the manure is spread on the kiln floor to a depth of 7–8 in., being turned occasionally during treatment. [4]

Effects of Poultry Manure on Some Soil Chemical Properties and Nutrient Bioavailability to Soybean

Organic manures are known to be rich sources of both macro and micro nutrients of the crop. They also help in improving the physical status of the soil. Pot experiments were administered to work out the consequences of poultry manure on some soil chemical properties pH, organic C, available P, exchangeable Ca, Mg, K, Na, and Effective Cation Exchange Capacity i.e. ECEC) and dry matter yields, plant heights, concentrations of N, P and K in plant tissues of soybean plants. Five soil samples collected from research farms in Federal University of Agriculture, Abeokuta (FUNAAB), Odeda, Ayetoro, Ibadan, Ikenne in South Western Nigeria, were used for the screen house pot experiment. Treatments consisted of 5 rates of poultry manure (0, 2.5, 5.0, 7.5 and 10 t ha-1) and 100 kg ha-1 of NPK 20:10:10 fertilizer as basal application. [5]


[1] Moore, P.A., Daniel, T.C., Sharpley, A.N. and Wood, C.W., 1995. Poultry manure management: Environmentally sound options. Journal of soil and water conservation, 50(3), (Web Link)

[2] Kithome, M., Paul, J.W. and Bomke, A.A., 1999. Reducing nitrogen losses during simulated composting of poultry manure using adsorbents or chemical amendments. Journal of Environmental Quality, 28(1), (Web Link)

[3] Gelegenis, J., Georgakakis, D., Angelidaki, I. and Mavris, V., 2007. Optimization of biogas production by co-digesting whey with diluted poultry manure. Renewable Energy, 32(13), (Web Link)

[4] Dried Poultry Manure
Nature volume 131, (Web Link)

[5] Soremi, A. O., Adetunji, M. T., Adejuyigbe, C. O., Bodunde, J. G. and Azeez, J. O. (2017) “Effects of Poultry Manure on Some Soil Chemical Properties and Nutrient Bioavailability to Soybean”, Journal of Agriculture and Ecology Research International, 11(3), (Web Link)

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