Semen collection steps video sperm
A semen analysis measures three major factors of sperm health:. According to the American Association for Clinical Chemistry AACC , the tests should be conducted at least seven days apart and over the course of two to three months. Sperm counts can vary on a daily basis. Taking an average of the sperm samples can give the most conclusive result. A semen analysis is often recommended when couples are having problems getting pregnant.
Semen Collection from Bulls
Semen collection refers to the process of obtaining semen from male humans or other animals with the use of various methods, for the purposes of artificial insemination , or medical study usually in fertility clinics. Semen can be collected via masturbation  e. The best specimen is produced when a short period of 3—5 days of abstinence is observed. More prolonged period does not yield better results. For semen collection from stallions, the most common method used is an artificial vagina; after collecting semen, it is tested, diluted, then stored according to the intended use. Semen can be either liquid or frozen.
Semen Analysis and Test Results
Most available CASA systems are not accurate or so expensive. Therefore labours use manual methods to provide parameters. Although some companies have achieved appropriate accuracy, they have not released their methods. So proposing methods in this area might be useful for groups who intend to design new CASA system.
A large majority of dairy cows in the US, Canada and European countries are artificially inseminated. Artificial insemination of beef cows is also popular, particularly in purebred herds. The advantage of AI over natural service is that it facilitates rapid genetic improvement by allowing use of only the top bulls. Some bulls have sired more than , offspring via AI.