Cryptosporidium spp. infection in mares and foals of the northwest region of São Paulo State, Brazil.

The research article discusses a study carried out to investigate the occurrence of infection by Cryptosporidium spp., a type of microscopic parasite, in mares and their foals in the northwest region of Sao Paulo State, Brazil. The study found that the occurrence of infection was significant and associated with the breeds and age of the animals.

Study Design and Methodology

• The study was conducted in 11 farms in the municipalities of Araçatuba, Birigui, Guararapes and Santo Antônio do Aracangua in the northwest region of Sao Paulo State, Brazil.
• The study period was from November 2010 to March 2011.
• A total of 98 mares and 98 foals of various breeds were included in the study. Among the foals, 59 were males and 39 were females, aged from three to 330 days.
• Fecal samples were collected directly from the animals’ rectal ampulla and were purified and processed according to modified Kinyoun stain, a laboratory staining technique used for the detection of certain parasites and bacteria.

Results and Findings

• The occurrence of Cryptosporidium spp. was 21.4% (21 out of 98) for foals and 18.4% (18 out of 98) for mares, indicating a significant presence of the parasite in both mares and their young.
• The study found a significant association between the occurrence of Cryptosporidium spp. infection and the breeds and age of animals. Specifically, it was concluded that foals older than two months and Mangalarga breed (a type of horse breed common in Brazil) are less susceptible to the occurrence of Cryptosporidium spp. infection.

Conclusion and Implications

• The study results highlight the importance of monitoring for Cryptosporidium spp. among horses, given the considerable occurrence detected in this study.
• The breed and age-based susceptibility revealed by the study may inform targeted strategies for Cryptosporidium spp. control and prevention in the equine industry.
• Further studies to confirm these associations and to delve deeper into the factors influencing susceptibility and resistance can help in developing effective interventions.