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Animal unit months (AUMs) in a grazing area (calculated by multiplying the number of animal units by the number of months of grazing) provide a useful indicator of the amount of forage consumed. On public lands in various jurisdictions, authorized use of forage for grazing is commonly expressed in animal unit months.
In animal husbandry, a concentrated animal feeding operation (CAFO), as defined by the United States Department of Agriculture (USDA), is an intensive animal feeding operation (AFO) in which over 1,000 animal units are confined for over 45 days a year. An animal unit is the equivalent of 1,000 pounds of "live" animal weight. [1]
Livestock grazing comparison units are used for assessing the overall effect on grazing land of different types of animals (or of mixtures of animals), expressed either as a total for a whole field or farm, or as units per hectare (ha) or acre.
In the United Kingdom the paddock is measured in LU, livestock units, although different schemes exist for this. [24] [25] New Zealand uses either LU, [26] EE (ewe equivalents) or SU (stock units). [27] In the US and Canada the traditional system uses animal units (AU). [28] A French/Swiss unit is Unité de Gros Bétail (UGB). [29] [30]
Being a ratio the FCR is dimensionless, that is, it is not affected by the units of measurement used to determine the FCR. [3] FCR a function of the animal's genetics [4] and age, [5] the quality and ingredients of the feed, [5] and the conditions in which the animal is kept, [1] [6] and storage and use of the feed by the farmworkers. [7]
In biology, a taxon (back-formation from taxonomy; pl.: taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking , especially if and when it is accepted or becomes established.
As Hollywood returns to production following this year’s historic WGA and SAG-AFTRA strikes, Fox has announced winter and spring premiere dates for its returning scripted series including ...
Animal testing, also known as animal experimentation, animal research, and in vivo testing, is the use of non-human animals, such as model organisms, in experiments that seek to control the variables that affect the behavior or biological system under study. This approach can be contrasted with field studies in which animals are observed in ...