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For example, some animal unit calculations used in Texas assume that daily forage dry matter consumption by a 90-pound nanny Spanish goat is 4.5 percent of body weight. Thus the nanny:cow ratio of daily dry matter consumption is estimated at 4.5:26, or about 0.16. This yields the estimate that such a nanny is equivalent to about 0.16 animal ...
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 ]
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 ...
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.
The Atwater system, [1] named after Wilbur Olin Atwater, or derivatives of this system are used for the calculation of the available energy of foods.The system was developed largely from the experimental studies of Atwater and his colleagues in the later part of the 19th century and the early years of the 20th at Wesleyan University in Middletown, Connecticut.
Middle: 1 kg matter, 49 kg water (98% water). If the potatoes are 99% water, the dry mass is 1%. This means that the 100 kg of potatoes contains 1 kg of dry mass, which does not change, as only the water evaporates. In order to make the potatoes be 98% water, the dry mass must become 2% of the total weight—double what it was before.
For example, one study shows that the amount of feed a Hereford bull requires to maintain a kilogram of body weight is closely related to genetic variation in its RFI. Similarly, in laying hens , variation in RFI is directly linked to variations in maintenance energy expenditure.
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.