Sadly not all strains of the same breed will lay the text-book number of eggs since there has been a large amount of selection for specific traits desirable in the showing circuit and sometimes egg production has actually been bred out of these strains.
An astronomical unit (AU) is a measure of distance often used in astronomy, equal to the distance between the Earth and the Sun. In terms of more common units of measurement, an AU is equal to about 93 million miles (150 million km), or the distance light travels in a little over eight minutes. The symbol AU is most often used to represent the astronomical unit, though less commonly you may see UA used instead.
What is an Animal Unit Month? An Animal Unit Month (AUM) is the amount of forage required by an animal unit grazing for one month. The standard animal unit is defined as one mature 1000 lb cow with a calf, or equivalent, and is based upon the average daily forage intake of 26 lb dry matter per day.