| The study aimed to investigate the existence of intestinal protozoa in feces of the camels and their breeders in Najef province, Iraq because this province is having a large number of camels. One hundred fecal samples were collected from camels (33 males and 67 females) aged between >3 to 6≤ year and 25 fecal samples were collected from camels breeders (14 males and 11 females) aged between >30 to 60 years during November 2014 to May 2015. Samples were examined through direct wet smear and Lugal's iodine for cycts or trophzoite of Giardia spp. and Entameba spp. while modified Ziehl-Neelsen staining technique for oocycts of Cryptosporidium spp. The results showed that the infection rates of Cryptosporidium spp., Giardia spp. and Entameba spp. in camels were 61%, 24%, and 20%, respectively. The corresponding infection rates in camel-breeders were 56%, 20%, and (16%), respectively. It can be concluded that the high prevalence values of the intestinal protozoa were detected in camels and camel-breeders. The prevalence values seems to be parallel between camels and camel-breeders who are mainly in touch with camels. This could be an evidence of the association of infection between camels and camel-breeders.

| A study was conducted to identify the prevalence of Cryptosporidium spp. as well as to investigate the effect of the region, age and sex on the infection rate in cattle and their breeders. A total of 288 samples (200 samples for cattle and 88 samples for their breeders) were collected during November 2014 to May 2015. Results showed a significant difference in the prevalence of Cryptosporidium spp. in cattle (57%) and their breeders (32.95%). The effect of age on infection rate in cattle was significant (P<0.01). The highest infection rate (75.68%) was shown in the early age category (less than 1 year), while the lowest (43.47%) was found in age ≥6 years. In general, the infection rate dropped gradually with advanced age until reached the lowest estimation in the older age (≥6 years). On the other hand, the effects of region and sex were not significant. Concerning the cattle breeders all studied effects were not significant.