Escherichia coli O157:H7 (EcO157) shed in cattle manure can survive for extended periods of time and intervention strategies to control this pathogen at the source are critical as produce crops are often grown in proximity to animal raising operations. This study evaluated whether neem (Azadirachta indica), known for its antimicrobial and insecticidal properties, can be used to amend manure to ...

Livestock farming systems encompass (i) grazing, (ii) mixed, and (iii) land-less systems. These systems convert crop protein into animal protein with an efficiency ranging from 5% to 45%, depending on animal type, system and management. The nitrogen (N) in the remaining fraction (55– 95%) is in urine and dung, and is conducive to N losses. This paper reviews N input–output budgets and N losses ...

The introduction of ASABE Standard D384.2, Manure Production and Characteristics, has created the opportunity to integrate feed management decisions and animal performance measures into nutrient planning processes. This paper introduces a software tool that integrates estimates of nutrient excretion based on the new standard with estimates of land need, labor and equipment time allocation, and ...

The link between livestock production, manure management, and human health has received much public attention in recent years. Composting is often promoted as a means of sanitizing manure to ensure that pathogenic bacteria are not spread to a wider environment during land application. In a two-year study (1998 and 1999) in southern Alberta, we examined the fate of coliform bacteria during windr...

Manure application to land and deposition of urine dung by grazing animals are major sources ammonia (NH3) nitrous oxide (N2O) emissions. Using data on NH3 N2O emissions following land-applied manures excreta deposited during grazing, emission factors (EFs) disaggregated climate zone were developed, the effects mitigation strategies evaluated. The represent from cattle swine in temperate wet cl...

Highlights Steam gasification parameters of cattle manure char were optimized. Effects slow heating and fast modes on analyzed. 1.92 m 3 /kg syngas yield 88.72% C-conversion efficiency obtained at 850 ° C, with heating, 1.66 g/min steam flow rate, K 2 CO catalyst. Abstract . This study investigated the hydrogen-rich gas production from by gasification. The characteristics studied proximate anal...

Abstract Pare Village, Selogiri District, Boyolali Regency, has a high enough beef cattle, which serves as an opportunity for the community to be developed through improved economy from cattle fattening, both main product in form of meat and by-products livestock manure. The utilization manure into organic fertilizer does not only increases income but also creates environmentally friendly condi...

background and objectives: although chemical fertilizers in short-term can increase vegetables yield, but must be renewed each planting season that this trend increases the concentration of nitrate in the vegetables shoots, nitrogen leaching and contamination of water resources, loss of beneficial insects and microorganisms and soil fertility will decline, and over time reduce the yield and qua...

Biochar is a carbon-rich material produced during organic waste pyrolysis. In this context, two experiments were performed to evaluate the effect of biochar from rice husks and cattle manure on soil fertility common bean production, as well identify optimal dose be applied. The first experiment (Experiment I) was conducted according completely randomized design (factorial scheme 2 × + 1) with s...

The current study represents a comprehensive investigation of the occurrence and fates trenbolone acetate (TBA) metabolites 17?-trenbolone (17?-TBOH), 17?-TBOH, trendione (TBO); melengesterol (MGA); less commonly studied ?-andrenergic agonist ractopamine (RAC) in two 8 month cattle feeding trials simulated rainfall runoff experiments. Cattle were administered TBA, MGA, or RAC, their residues me...