Abstract
In this paper, the dairy cattle waste management systems on farms in Aydın region in Turkey were investigated. Number of farms and livestock herd size, type of barn, type of machinery and farm labour force were studied. The collection, management and storage systems of manure produced in dairy cattle farms were taken into consideration. Additionally, biogas amount, which is produced from animal waste, was calculated for all districts of Aydın by using the number of livestock animals and various criteria such as the rate of dry matter. Results show that the typical and representative farm in the Aydın region is facility with a total head over 100 heads. 89.6% of the farms have heads in the range of 100 to 200. The amount of biogas that can be produced from all manure collected in Aydın region in the biogas plants is approximately 160,438 m3/day (based on 0.5 m3/day biogas per cattle), which would produce around 100 GWh/year that can be used for own needs of farms owners.
Highlights
Nowadays, expansion and intensification of large-scale animal feeding operations has resulted in an increase in the size of farms and in the amount of waste produced from farms causing serious problems such as a negative impact on environment and public health in rural areas.By the end of 2014, according to FAOSTAT [1], 24.99 billion animals were produced on farms all over the World
Based on the data obtained from 87 farms livestock size in the study region, potential of biogas andBealseecdtroicnittyhperdoadtuacotibotnaiwneedrefrcoamlcu8l7atfeadrmussilnivgeesqtoucaktiosinze1 ianntdhe2 sbteuldowy :region, potential of biogas and electricity production were calculated using equation 1 and 2 below: BiBoigoagsaps rpordoudcutciotinon(B(PB)P[)3[33]3: ]: BP
Manure is usually stored for many months, and during its decomposition, manure emits unpleasant gases such as ammonia and hydrogen sulphide and impacts the health and comfort of surrounding people. Another problem is to minimize odour from manure storage locations as well as from open barns, which depends on the size of the intensive livestock operation, the type of livestock or manure management system and storage time
Summary
Expansion and intensification of large-scale animal feeding operations has resulted in an increase in the size of farms and in the amount of waste produced from farms causing serious problems such as a negative impact on environment and public health in rural areas.By the end of 2014, according to FAOSTAT [1], 24.99 billion animals were produced on farms all over the World. Animal manure can be used as substrate for biogas production in the process anaerobic digestion [16,17,18]. Based on the data obtained from 87 farms livestock size in the study region, potential of biogas andBealseecdtroicnittyhperdoadtuacotibotnaiwneedrefrcoamlcu8l7atfeadrmussilnivgeesqtoucaktiosinze1 ianntdhe2 sbteuldowy :region, potential of biogas and electricity production were calculated using equation 1 and 2 below: BiBoigoagsaps rpordoudcutciotinon(B(PB)P[)3[33]3: ]: BP
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