The term BA15 means Bayonet base with 15mm in diameter. A BA15 bulb is commonly known by industry standards as the following bulb size: 1156 7506 7527 1157 2057 2357 7528 P21W P21/4W, etc. These BA15 bulbs are commonly use for turn signal, tail/stop lights, reverse lights and daytime running lights.
Depending on the breed of the heifer, most heifers will start to show the first signs of heat when they are between 9 and 22 months of age. 1  The rate of sexual maturity or puberty is determinate of genes and breeding. A deep, long, and wide rump is a very good sign that that heifer is a keeper. 2  You will always know when a heifer or cow is ready to be bred when they go into heat. 3  Normal estrus periods last 24 hours and occur between 17 to 24 days.
Puberty is the age at which the ram's reproductive organs become functional, his secondary sex characteristics develop, and he is ready to successfully mate ewes. Most ram lambs reach puberty between 5 and 7 months of age, at 50 to 60 percent of their mature weight. BSE does not include an evaluation of a ram's sex drive or breeding behavior. Libido (sex drive) The willingness to breed ewes is highly variable among rams and can have a major impact on sheep production, especially in a single-sire mating scheme.