So far as overall improvement is concerned, a. boar has far more influence in a herd than the. average sow. Because a boar has such a. tremendous influence within a herd, careful. consideration should be given to his selection, management and replacement. On many farms productivity and profitability are.
Health Benefits of Birth Control Methods. Birth control prevents unwanted pregnancies. The medical risks of pregnancy and delivery are much higher than the risks of using any birth control method. Some birth control methods have other health benefits in addition to the prevention of pregnancy. 1  Latex condoms protect against sexually transmitted infections (STIs), including infection with the human immunodeficiency virus (HIV).
A Brigham and Women's Hospital answered. Depo-Provera is a hormone injection used for birth control. It is administered starting within the first five days of your period, then every 12 weeks thereafter. Working similar to a birth-control pill, Depo-Provera has the hormone progestin, which changes the lining of the uterus, making it difficult for sperm to fertilize an egg. In the weeks between shots, you do not have to use other contraceptive methods. It is 99% effective in preventing pregnancy.