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
Systems and/or methods for using air/wind power to charge/re-charge vehicle batteries
Multichannel device utilizing a centralized out-of-band authentication system (COBAS)
Rupture resistant system
System and method for conditionally sending a request for data to a home node
High-efficiency preambles for communications systems over pseudo-stationary communication channels
DRAM refresh method and system
Discharge lamp lighting circuit
  Randomly Featured Patents
Monitoring events in a computer network
Developing device
Rotary drum
Energy absorbing vehicle door and side panels
Dispensers for thin flat rigid articles
Method of manufacture of a capacitor with a dielectric on the basis of strontium-bismuth-tantalum
Motor vehicle power steering gear
Television-watchable refrigerator system and method for operating the same