Heat stress in dairy cows can reduce both cow comfort and milk production. Sprinkler fan cooling offers promise as means of reducing heat cows. This article describes a sprinkler system installed at feed bunk evaluates performance temperate, humid climate. The results indicate the increased production during test period.

Sunny Day Farm was the home of highest producing registered Jersey herd in world at time this studywas conducted. The cows are housed a freestall barn and manure is removed from using flush system. manuretreatment system on farm includes following components series: an inclined stationary screen separator, atwochambered settling basin, lagoon. Samples were taken to quantify performance existing treatmentsystem. separator 60.9% total solids, 62.8% volatile 49.2% ofthe TKN, 52.2% organicN,...

Broiler farms produce large amounts of litter that is typically spread on nearby cropland or sold to other farmers for use as a fertilizer substitute. Burning biomass provide energy space heating in broiler houses off-site electric generation has been viewed an attractive alternative land application and source renewable energy. A sample was obtained from commercial farm following clean-out evaluate the content, ash yield, characteristics combustion. Litter evaluated possible lime substitute...

Accurate information about the amount of standing biomass is important in pasture management for monitoring forage growth patterns, minimizing risk overgrazing, and ensuring necessary feed requirements livestock. The morphological features plants, like crop height density, have been proven to be prominent predictors yield. objective this study was evaluate effectiveness stereovision-based vegetation coverage measurements predicting aboveground yield bermudagrass (Cynodon dactylon) a pasture....

<b>Highlights</b> <list list-type=bullet><list-item> A UAV with NDVI and RGB cameras captured aerial images of alfalfa plots before after harvest. </list-item><list-item> Structure from Motion (SfM) crop surface models were used to determine change in height. An equation predict dry matter fraction (DMF) as a function was developed. Dry yield using DMF height </list-item></list> <b>Abstract.</b> Alfalfa is an important forage grown for hay, silage, pasture production. Accurate estimations...

A screw press separator was temporarily installed on a commercial swine farm in Horry County, South Carolina.The had 0.5 mm screen and operated with single 40 kg weight each pressure plate arm. Predictionequations were developed from the data to describe removal of total solids (TS), volatile (VS), chemical oxygendemand (COD), Kjeldahl nitrogen (TKN), ammonium (NH4 N), organic (organicN), totalphosphorus (TP). Separated analyzed determine percent concentration major plantnutrients. The...

A study was conducted to compare the composition of equine manure as removed from stall, and bedding-free on six horse farms. The farms ranged a pleasure stable with poorly managed stalls an intensively for racehorses. characteristics measured included: moisture content, total nitrogen, ammoniacal nitrate organic phosphorous (expressed P2O5), potassium K2O), calcium, magnesium, sulfur, zinc, copper, manganese, iron, carbon, electrical conductivity (index soluble salts), pH. Statistical...

Maintenance and control of liquid levels in anaerobic lagoons storage ponds is enhanced by pretreatment with liquid-solid separation or periodic removal accumulated sludges. Until local disposal nutrient recycling options become available, sludges can be contained, dewatered, stored using geotextile filtration. A filtration testing method termed a hanging-bag test was used to treat dairy lagoon sludge, swine manure, manure. Hanging-bag performance evaluated by: (1) determining solids plant...

Experiments were conducted to observe the solids and plant nutrient removal efficiencies that canbe achieved using geotextile filtration filter lagoon sludge fresh animal manure. The types of materialtested dairy sludge, swine liquid manure (TS = 0.71%) swinemanure 2.89%).<br><br>The for major nutrients not significantly different between dairyand sludges tested. Geotextile removed 87.8% TS, 58.4% Total AmmoniacalNitrogen (TAN), 87.0% organic-N, 86.7% total phosphorous from sludge....

Ammonia loss resulting from land application of liquid animal manure varies depending on the composition and method used to apply cropland. High levels ammonia volatilization result in an economic farmer based value nitrogen have also been shown be a source air pollution. Using irrigation as applying cropland has generally accepted that increases ammonia. However, only three studies available literature measured amount lost during process. Only one concluded was significant. A pooled...

Highlights The concentrations of major plant nutrients, key minor and carbon were measured for finished turkey poult litter compost that had been stored 29 to 583 days in open windrows at a commercial composting facility. It was found the TN, P 2 O 5 , K O, nutrients not significantly correlated with respect age. Significant negative correlations observed organic matter resulting decrease C:N. decreases pH increases bulk density also observed. Abstract. Several studies have provided...

Longleaf pinestraw is high-quality landscape mulch that in large demand many urban and suburban areas of the Southeastern United States. In cases, annual income from production just as important to forestland owners value standing timber.

Organic polymers are useful to increase separation of suspended solids and carbon compounds from liquid swine manure, but experiences with dairy manure limited. In this experiment, two polymers, a synthetic polyacrylamide (PAM) natural chitosan were used manure. Experiments carried out using four different concentrations total solids: 0.4, 0.8, 1.6 3.2%. study, we evaluated whether the use PAM flocculants could improve filtering characteristics various size screens. Separation by screening...

A two-stage mechanical separation system was installed on a large dairy farm near Tulare, California to reduce loading the settling ponds and lagoon produce solids be used as freestall bedding. The included two inclined screens operated in series. first separator 0.508 mm (0.020 in) screen followed by low-pressure screw press provide additional dewatering perforated stacking conveyor stack residual solids. second fitted with 0.254 (0.010 drying occurred conveyor. removed 59.7% of total (TS),...

Poultry production requires electricity for optimal climate control throughout the year. Demand in poultry peaks during summer months when solar irradiation is also high. Installing photovoltaic (PV) panels on rooftops of houses has potential reducing energy costs by demand charges utility companies. The objective this research was to estimate rooftop areas possible PV installation using aerial images acquired with a commercially available low-cost unmanned vehicle (UAV). Overhead 31 broiler...

APPLICATION OF A GAUSSIAN PLUME MODEL ODOR DISPERSION TO SELECT SITE FOR LIVESTOCK FACILITIESThe ideal separation distance between a livestock facility and the nearest neighbor to avoid an odor nuisance has not been determined is somewhat subjective. windows based computer program was developed be used as educational tool decision aid for planning facilities. The major focus on control dispersion of odor, with secondary emphasis nutrient management....Author(s)John P. ChastainFrancis J....