Veterinary Parasitology: The Practical Veterinarian - CX.com

Parasites of the Gastrointestinal Tract III 199
Treatment and Control
• Dogs: sulfadimethoxine administered at 55 mg per
kg for 1 day, then 27.5 mg per kg for 4 days or until
the dog is without clinical signs for at least 2 days,
has been used.
• Pigs: neonatal porcine coccidiosis is apparently
nonresponsive to treatment; on farms known to be
highly contaminated, can prophylactically treat
sows for 2 weeks prior to farrowing or piglets for
the first 3 weeks of life.
SARCOCYSTIS SPP.
• Worldwide distribution in canids and felids; generally
low significance.
• Numerous species described (Table 6–1).
Life Cycle
• Indirect.
• Free sporocysts or sporulated oocysts containing
two sporocysts with four sporozoites are passed in
the feces; ingested by the intermediate host; sporozoites
enter vascular endothelial cells and undergo
two meront generations; merozoites then invade
skeletal and cardiac muscles and produce sarcocysts
containing several hundred to thousands of
bradyzoites; development to infective stage
requires 1–2 months.