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  2. Feed conversion ratio - Wikipedia

    en.wikipedia.org/wiki/Feed_conversion_ratio

    For dairy cows, for example, the output is milk, whereas in animals raised for meat (such as beef cows, [1] pigs, chickens, and fish) the output is the flesh, that is, the body mass gained by the animal, represented either in the final mass of the animal or the mass of the dressed output. FCR is the mass of the input divided by the output (thus ...

  3. Dry matter - Wikipedia

    en.wikipedia.org/wiki/Dry_matter

    The nutrient or mineral content of foods, animal feeds or plant tissues are often expressed on a dry matter basis, i.e. as a proportion of the total dry matter in the material. For example, a 138-gram apple contains 84% water (116 g water and 22 g dry matter per apple). [5]

  4. Useful conversions and formulas for air dispersion modeling

    en.wikipedia.org/wiki/Useful_conversions_and...

    For example, such a regulation might limit the concentration of NOx to 55 ppmv in a dry combustion exhaust gas corrected to 3 volume percent O 2. As another example, a regulation might limit the concentration of particulate matter to 0.1 grain per standard cubic foot (i.e., scf) of dry exhaust gas corrected to 12 volume percent CO 2.

  5. Dry basis - Wikipedia

    en.wikipedia.org/wiki/Dry_basis

    An aqueous solution containing 2 g of glucose and 2 g of fructose per 100 g of solution contains 2/100=2% glucose on a wet basis, but 2/4=50% glucose on a dry basis.If the solution had contained 2 g of glucose and 3 g of fructose, it would still have contained 2% glucose on a wet basis, but only 2/5=40% glucose on a dry basis.

  6. Intake fraction - Wikipedia

    en.wikipedia.org/wiki/Intake_fraction

    Intake fraction is the total mass of a pollutant ingested or inhaled by all exposed individuals over a given time, per total mass of the pollutant emitted. The intake fraction can be divided into components that identify the specific pollutant source, route, media, and subpopulation of exposed individuals.

  7. Mass balance - Wikipedia

    en.wikipedia.org/wiki/Mass_balance

    In the first example, we will show how to use a mass balance to derive a relationship between the percent excess air for the combustion of a hydrocarbon-base fuel oil and the percent oxygen in the combustion product gas. First, normal dry air contains 0.2095 mol of oxygen per mole of air, so there is one mole of O 2 in 4.773 mol of dry air.

  8. Moisture analysis - Wikipedia

    en.wikipedia.org/wiki/Moisture_analysis

    In this technique, a sample of material is weighed, heated in an oven for an appropriate period, cooled in the dry atmosphere of a desiccator, and then reweighed. If the volatile content of the solid is primarily water, the loss on drying technique gives a good measure of moisture content. [ 5 ]

  9. Neutral detergent fiber - Wikipedia

    en.wikipedia.org/wiki/Neutral_Detergent_Fiber

    Neutral detergent fiber (NDF) is the most common measure of fiber used for animal feed analysis, but it does not represent a unique class of chemical compounds.NDF measures most of the structural components in plant cells (i.e. lignin, hemicellulose and cellulose), but not pectin.