Add more ports by: Upgrading your Mac's graphics card. Apple has phased out this proprietary display plug, but you might see it on an older monitor or Mac. Look for the rounded shape of the rectangular connector to help in identification. The cable carries power, USB, and video. You can adapt a DVI signal for an ADC monitor, but the converter boxes can be pricey; an ADC signal from a Mac is more easily converted to DVI for a standard display.
Most nutrition articles about feeding horses recommend approximately two (2) percent of their body weight in forage per day. This would mean a 1,000-pound horse would need about 20 pounds a day. This amount is not carved in stone.
However, some 800-pound cattle fed 4 pounds of corn or 3 pounds of corn and 1 pound of soybean meal per head daily on these same pastures from mid-June to early September gained 0.54 pounds more per head daily than those without supplements. An extra pound of gain took 7.4 pounds of supplement.