Environmental impact of the barn – The Role of the Stockperson

Posted in: Energy by admin on January 1, 1998 | No Comments

Water wastage and heating represents a large cost to a producer. Energy consumption of the heating system associated with building setpoint temperature and the importance of water wastage on volume of slurry is examined. Odor emmissions can be affected by room cleanliness. For the heating study, three different temperature curves were considered at five different locations in Canada. Increase in cost was associated with an increase in barn temperature above recommended setpoint temperature. A 5000 head barn was used as an example to illustrate the cost associated with water wastage and subsequent spreading costs. Gas and odor emmissions are detrimental to the barn environment but can be reduced through pen cleaning, temperature management and dust control.

Digestibility and nitrogen retention in fattening pigs fed different levels of ensiled cassava leaves as a protein source and ensiled cassava root as energy source

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Thermochemical Conversion of Swine Manure: Temperature and Pressure Responses

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The trend of hog production is to larger more intesnive operations. One of the largest impediments to these operations are manure and odour related problems. A thermochemical conversion (TCC) process is one where sufficient heat (160-250 C) and subsequent pressure applied to the manure for a period of 120-180 minutes resulting in swine manure sludge and oil products. The results found were preliminary, however, the TCC process was shown to reduce the chemical oxygen demand levels by 94% and approximately 8.5% of the volatile solids were converted into an oil product.

Odor and Gas Reduction from Sprinkling Soybean Oil ina Pig Nursery

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Daily sprinkling of small amounts fo soybean oil inside a pig nursery facility reduced odour, H2S and total dust levels of the air inside the barn and in the emission or exhaust ventilation air. Oil sprinkling, as outlined in the MWPS AED-42 publication (40 ml/square meter for the first 2 days, 20 mlk/ square meter for days 3 and 4 and 5 ml/square meter for the remaining time the pigs were in the room. Once every 2 weeks a surge amount of 20 ml/square meter would be added) ,was not effective in reducing ammonia concentrations or respirable dust levels inside the treatment barn when compared to a similar control barn.

An Inflatable Cover for a Concrete Manure Storage in a Swine Facility

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A Comprehensive Experimental Study of Aerial Pollutants in and Emissions from Livestock Buildings. Part 1: Methods

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Airborne pollutants in, and emissions from livestock
buildings aA

World Hog Production: Constrained by Environmental Concerns?

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International trade in pork has risen significantly in recent years. Exports of the major pork exporting countries grew at an annual rate of 4 percent during 1989-97 as a result of bilateral and multilateral trade agreements, income growth, and technological innovations in transport and shelf-life extension. There is little doubt that as incomes continue to grow, markets continue to liberalize, and science finds new ways to extend the shelf life of fresh meat over longer periods, international trade in pork will increase further. USDAa

Gas Emissions from Swine Facilities (EIRC) French

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Sociology and Swine Facilities – French Version

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Evaluation of humidity sensors in a swine barn

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Humidity sensors are affected by the air quality in livestock buildings. New sensor models should be tested under actual barn conditions to assess their long-term integrity. An experimental procedure was developed to meet this requirement. After initial static and dynamic calibrations in a specially designed humidity chamber in the laboratory, the test sensors were installed in a livestock building for one year. Several times during the year, the sensors were temporarily removed from the barn and taken back to the laboratory for calibration against a reference hygrometer ad determination of static and dynamic properties including accuracy, hysteresis, and time response. A bank of 72 TDK humidity sensors with different filters and coatings were evaluated with this procedure in a grower/finisher room. The drift of various static and dynamic sensor characteristics over time, the reliability, and the durability of the sensors were identified and the best sensor treatment was selected. The results confirmed the value and practicality of the test procedure, and led to recommendations for the appropriate length of the in-barn evaluation period, calibration frequency, and required replication.