Incidence of coccidia in California quail (Lophortyx californicus) from the Okanagan Valley, British Columbia

Abstract

A survey of the incidence of coccidia in California quail (Lophortyx californicus) in the Okanagan Valley of southcentral British Columbia was conducted in the summers of 1965 and 1966. Seventy-three percent of 85 quail were infected with oocysts of Eimeria (Protozoa: Eimeriidae). The incidence of infection was higher in the adult (81%) and juvenile (79%) quail than in the immatures (40%). The incidence of infection seems to be correlated with the breeding phenology of the quail. The intensity of infection was higher in the immatures and juveniles than in the adults. No significant differences occurred in the incidence of infection between the sexes and the four study areas. There were monthly variations, with the lowest incidence occurring in June and the highest in August. No mortality or morbidity caused by coccidiosis was observed.

A Study on the Pathological and Diagnosis of Eimeria Species Infection in Japanese Quail

“…While significant was noticed between the infection of caecum and the duodenum ,small intestine the cause of this difference might be due to high prevalence rate of E.tsunodai appeared in caecum(7)refers to the pathogenic of this species of Eimeria ismore effect than other species and expressed the pathogenic and clinical symptoms of Eimeria tsunodai resemble to those of chickens infected withE .tenella, the intensity of infection with Eimeria of Japanese quails revealed that high degree of infection appeared in caecum the result was in agreement with (15,25). According to the age,sex the infection rate of Eimeriasp was low in adult while it was high in young quails.These results not agreement withstudies carried out on quails in California (21) noted that the prevalence of coccidiosisincreased with the age of quails. While agreement with (26)reported that young birds are more susceptible to coccidiosis effects and it is suggested that older birds evidentially develop some kind of immunity to infection.…”

Epidemiological, Morphological, and Histopathological Study of Quail Coccidiosis in Thi-Qar Province, Iraq

“…The prevalence of Eimeria spp was not affected by the sex of quail showing a high rate of infection in males than females possibly the majority of the males were adult. These results were in agreement with Liburd (30) in California who found non significant difference (P≥0.05) with a higher infection in males. In Iraq, previous studies recorded a higher infection rate in males (50%) than females (48.9%) without significant difference at (P>0.05%) of coccidian infection (15,16).…”

“…It is not possible to confirm the existence of sex-related determinants that affect parasite infection and make it tilt to a specific sex of a host without the other. As we do not rule out that, some cases led to immune suppression for females during egg-laying and incubation period of female birds (27,30).…”