Decide how many bottles (units) of semen that can be processed from the ejaculate. Each bottle should contain about 3 to 4 billion sperm and 80 to 100 ml fluid. The boar ejaculate may contain from a low of 10 to 15 billion up to over 100 billion sperm or enough sperm for 2 or 3 bottles up to 25 or more bottles. This number depends upon age, breed, frequency of collection, and individual boar. If you do not have a sperm counting device, you will have to follow some guidelines.
Freckles appear when the melanin, the dark pigment in skin, isn't distributed evenly -- certain areas of the skin have more than others, and that's why they appear a little darker. But what does sunlight have to do with the issue? If you're prone to freckles, you're more likely to have them the more you expose yourself to the sun.
Exposure to the sun can actually enhance the appearance of freckles because the body may produce more melanin in response to overexposure. Melanin acts as the skinâs protection against the sunâs rays, which causes a personâs freckles to darken. Freckles are particularly common in children, but often the onset of puberty causes the body to begin to produce more melanin. If melanin is produced evenly throughout the skin, it causes the freckles to fade.