Resources Contact Us Home
Crop weighing

Image Number 8 for United States Patent #6449896.

A method of determining the weight of animals and the development of plants in a controlled environment. The method includes measuring the increase in CO.sub.2 production over a test period. CO.sub.2 production is a measure of the metabolic rate and this is related to weight of animals and development of crops which can often be determined by weight. There is illustrated a poultry rearing house having vents, lights and an air heater. CO.sub.2 sensors are connected to a CO.sub.2 controller and in turn to a central controller. To test the increase in CO.sub.2 production over time, the birds are settled into a passive state with no feed and the lights turned off. The level of CO.sub.2 produced is measured. The vents are closed. After a time, the rate of Co.sub.2 produced is measured and the increase calculated.

  Recently Added Patents
Apparatus and method to reduce noise in magnetic resonance imaging systems
Software execution management apparatus, method, and computer-readable medium thereof
Dyes and methods of marking biological material
Device chip carriers, modules, and methods of forming thereof
Power management implementation in an optical link
Lamp body with integrally molded heat sink
  Randomly Featured Patents
Spray nozzle actuator
Positive expiratory pressure device with bypass
Mobile shelving system and method of assembly
Passenger rail car sliding door with high platform threshold
Rotatable assembly for dynamoelectric machines having means for reducing release of magnet material particles therefrom
Microscope tube
Electrooptical transmitting/receiving module, and method for producing the module
Information processing equipment
Web diverter
Perforation detection device and camera provided with the perforation detection device