Yes, but more so if the alpacas were raised with cattle from a young age. Alpacas and cattle will not get along well if they're not used to each other or do not tolerate each other. Alpacas are good livestock guardians, but sometimes they can also wreak havoc in the cow-herd if they're not trained or accustomed to being around cattle. Quite often selecting for cows that are very defensive towards predators is better than risking getting a livestock guardian that is not a guardian at all.
Thus, in most cases, you should be careful about putting an alpaca (or alpacas) with cattle.
Grass is the most inexpensive feed you can feed your cows. It grows in your backyard and in your pastures, and only requires the cows to harvest it themselves. Hay comes as the second least expensive feed to feed cattle.
Graze in the pastures.
No, alpacas are a domesticated animal, like sheep or cattle, and are in no risk of extinction.
Food; nourishment., Specifically: Grass growing for the food of cattle; the food of cattle taken by grazing., Grass land for cattle, horses, etc.; pasturage., To feed, esp. to feed on growing grass; to supply grass as food for; as, the farmer pastures fifty oxen; the land will pasture forty cows., To feed on growing grass; to graze.
Stockers.
Donald L. Plucknett has written: 'Managing pastures and cattle under coconuts' -- subject(s): Cattle, Coconut palm, Intercropping, Pastures, Tropics
Yes, but like with cattle, only in moderation.
Yes, but it is not acceptable for dairy cattle.
Cattle egrets are commensal animals. They consume the insects that cattle and livestock disturb while they are grazing in pastures.
Whatever hay that grows in your area or in your pastures/hayfields. Shorthorns will eat the same sort of hay that Angus or Simmentals or Limousins will eat, there's no difference in the type of hay to feed in regards to breeds of cattle. As a matter of fact, Shorthorns often will do better on average-quality hay than continentals like Simmental or Limousin will, just like with Angus or Hereford cattle.
Mostly for beef and/or dairy. Cattle are also raised to keep the grass down in the pastures or on an acreage where they are raised as a lawn ornament.
Yes, most alpacas will be just fine in a pasture with other herbivores (horses, cattle, sheep, goats). However, if you have two or more alpacas, you'll likely find they form a herd by themselves and do not associate much with the other animals in the pasture.