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
Holding structure for a touch panel
Three-dimensional shape data processing apparatus and three-dimensional shape data processing method
Light-reflective anisotropic conductive paste and light-emitting device
Frame syncrhonization in orthogonal frequency-division multiplexing systems
Image forming apparatus with static elimination
Multi-channel memory system including error correction decoder architecture with efficient area utilization
Compositions and methods using microspheres and non-ionic contrast agents
  Randomly Featured Patents
Electromagnetic railgun with a non-explosive magnetic flux compression generator
Ink-jet recording apparatus
Resuscitator for newborn pigs
Method of resolving a mixture of oil, water, and solids
Signal detect for high-speed serial interface
Cushioning floor mat
Burial casket
Work glove
Fluid catalyst regeneration process and apparatus