A friend of ours raises beef - one for himself and family, three or 4 more for selling. The local butcher told us that Jack's beef is what he buys for his freezer at home. To quote the butcher "I don't know what he does but his beef is tender, perfectly marbled and delicious!"
Jack's beef are in the pasture with his wife's 2 horses. He feeds the beef'ers a little grain everyday as a treat - just to keep them friendly, he says. Actually, he is feeding them a little grain to keep them from stealing the horse feed, lol. Not nearly enough grain to make them fat, but just enough to keep them happy. His pastureland is in central Wisconsin, and he has three paddocks that he rotates through. It helps that he has enough land to support the herd. When the grasses get short, they move to the next paddock - he hates bare, muddy ground. No alfalfa - timothy hay only when needed (Horse hay). His pastures are always green and lush. His beef'ers come running to the fence when he is out in the yard. They demand daily head scratches and face rubbing - even from strangers.
His cows are trained to come to the sound of the bucket - he taps a nail on the rim to call them for the evening din-din. This comes in very handy if they get out of the fence. They will follow him anywhere, just as long as he has his bucket and nail. A tree took out his fence on night and the next day we went to help find his beef, he looked like the pied piper walking down the side of the road leading the herd home - 4 beef and 2 horses walking behind him in single file.
Talk to your local UW Extension agents about the carrying capacity of your land and ask for advice on pasture management. In Wisconsin where I grew up, you can keep a cow and her calf for a year on a 4 acre pasture without damaging the land. In some areas of Wyoming, you need 40 acres for a single cow with a calf.
Jack prefers White-Face (aka Hereford) for his steers. In Wyoming, a nearby rancher raised Shorthorn for beef and they were very good also. The Shorthorn did very well on the high mountain dessert grasses that dominated his pastures.