Biological position of viruses: Viruses lack a cytoplasmic membrane and they do not have the basic component of a cell. They can only replicate inside the host cell. Outside the host cell, they are non-living.
The yearling program was, however, more variable with a maximum profit of $356 per head compared with $206 for calf fed, and a maximum loss of $171 per head compared with $152 for the calf fed program.
1 According to the Department of Agriculture in 2009, the average cost to feed a cow was $335 annually. 2  If using a pasture, FarmandRanchGuide.com claims that is usually around $30 per acre, or $216 per year. 3  They claim that each cow uses an estimated 1.2 acres per month.