Goats can be picky eaters, and they may not immediately accept new feeds. Any feed changes should be made gradually to avoid upsetting the rumen microbes. Feeding very high levels of grain can also upset the rumen. Grain should never be more than 50% of the total diet, except for heavily-producing dairy goats.
Glossary of Medieval Art and Architecture. groin vault: A vault produced by the intersection at right angles of two barrel (tunnel) vaults. Sometimes the arches of groin vaults may be pointed instead of round. See also: barrel vault.
Barrel vault is a type of vault with its semi-cylindrical arched surface allongated to form a barrel or tunnel shaped structure. Barrel vaults have been an integral part of ancient architecture and is seen in several churches and cathedrals.slide 1 of 3.ne more disadvantage of barrel vault is that it forms a series of continuous arches which are most of the time so deep that they cover a three-dimensional space. This makes the interior of the structures extremely dark as they provide very little intrusion for light.