I got this from a website:
.
"never feed
more than 50% of the total diet, except for heavily
producing dairy goats. Adult meat goats should
be fed a maximum of 1% of bodyweight in
supplemental grain, with lactating does reaching
a maximum of 1.5%.
.
Feeding an animal a large amount of concentrate (grain) causes acidosis, which results in a drop in rumen pH and a decrease in rumen motility. With acidosis, the animal usually will go off feed, have diarrhea, and show signs of depression for a couple of days. In severe cases, acidosis can cause death (Attra-Coffey, 2004).
.
Animals that are fed high-grain
diets can also contract enterotoxemia, which is
caused by epsilon toxin-producing Clostridium
perfringens Type D (pulpy kidney disease). The
symptoms of this disease are soft and pulpy
kidneys, excess pericardial fluid, pulmonary
edema, and hemorrhages on the serosal surfaces
(Sheep and Goat Medicine, Pugh, 2002)."
.
http://articles.extension.org/pages/4293...d-my-goats