Biogas generated from livestock manure is a renewable energy source and the digestate used as fertilizer. Moreover, dewatered biogas can be bedding material (recycled material). The aims of present study were to model whole dairy system with plant using recycled assess life cycle greenhouse gas (GHG) emissions. Emissions flow cattle production, treatment organic fertilizer application on-farm c...

On a typical dairy farm today, large amounts of N are imported as feed supplements and fertilizer. If this N is not recycled through crop growth, it can lead to large losses to the atmosphere and ground water. More efficient use of protein feed supplements can potentially reduce the import of N in feeds, excretion of N in manure, and losses to the environment. A simulation study with a dairy fa...

Nitrogen (N) is applied worldwide to produce food. It is in the atmosphere, soil, and water and is essential to all life. N for agriculture includes fertilizer, biologically fixed, manure, recycled crop residue, and soil-mineralized N. Presently, fertilizer N is a major source of N, and animal manure N is inefficiently used. Potential environmental impacts of N excreted by humans are increasing...

Solid wastes of finfish and shellfish could be converted into bio-manure through composting process it can used for protein (Spirulina) production aquaculture bioremediation. The study is aimed Spirulina from different recycled fisheries domestic under homestead condition. were collected sources manure by process. produced in five culture treatments fertilized with composts viz., trash fish com...

Organic bedding sources are becoming more expensive and difficult to find. Sand can be considered the ideal bedding source for dairy cows; however, not all producers consider sand a feasible alternative for their operation. Inherent properties of sand can make it difficult to handle in some manure systems. Large amounts of bedding can be obtained from mechanical liquidsolid separation of manure...