Objective—To determine whether specific feeding
practices were associated with development of colic
Design—Prospective matched case-control study.
Animals—364 horses examined by veterinarians in
private practice in Texas because of colic (cases; n =
182) or any other reason (controls; 182).
Procedure—Participating veterinarians were sent
forms at the beginning of the study to collect information
on signalment, feeding management practices,
farm management practices, and preventive
medical treatments. Case and control horses were
compared by use of conditional logistic regression to
identify factors associated with colic.
Results—Risk factors for colic were a recent change
in batch of hay, decreased exposure to pasture, a
recent change in type of grain or concentrate fed,
feeding > 2.7 kg (6 lb) of oats/d, feeding hay from
round bales, and Thoroughbred breed. Recent
anthelmintic administration decreased the risk of colic.
Conclusions and Clinical Relevance—Results suggest
that certain changes in diet (eg, change in batch of
hay, change in type of grain or concentrate, feeding hay
from round bales) and management (eg, decreased
availability of pasture) increase the risk of colic in horses.
(J Am Vet Med Assoc 2001;219:1419–1425)