Gastrointestinal diseases are caused by many of the apicomplexan protozoan parasites and cause significant clinical diseases. Cryptosporidiosis is one of the most important diseases of young ruminant livestock, particularly neonatal calves. This study investigates the prevalence of Cryptosporidium infection in Karbala farm cattle. Totally, 1360 fecal samples were collected from cows and calves between (1 week to  5years old) from both genders, from different regions of Karbala. Different fecal examination methods (direct fecal smear, fecal flotation with saturated salt solution and faecal smear stained by modified Ziehl-Neelsen were performed to determine Cryptosporidium spp. oocysts and other mixed parasites in the fecal samples. The results showed that 29.4% of the fecal samples were detected positive for cryptosporidiosis (400/1360). The highest infection rate appeared (41.9%) in the age group from 3-6 months old, and less rate was (15.1%) in 2 years (P≤0.05). Additionally, there was no significant variation found in infection rates between males (33.8%) and females (25.6%). Mixed infections have been reported with Eimeria spp. oocysts (7.3%), Giardia lamblia cysts (1.4%) and Trichostrongylus spp. eggs (5.1%) (P≤0.05). The results indicated the requirement for the eradication of the gastrointestinal parasites by deworming and a good management system in the sampled region.

Oestrosis is a type of nasal myiasis that is caused by larvae of flies from the Oestrus genus and is a disease of economic significance in small ruminants. The research aimed to investigate the prevalence of oestrosis and detect differences in the COX1 gene among haplotypes found in Sulaymaniyah, in the Kurdistan region of Iraq.

There is need to knowledge geographic distribution of CRIMEAN–CONGO HAEMORRHAGIC FEVER virus (CCHV) in Iraqi cities so this study take place in different region in Basrah to detect viral antibodies. Specific serological indirect ELISA using to determined IgG antibodies against CCHF virus. Blood samples were collected from large ruminants from buffalo, cows, and calves starting from June to the end of September 2023. Results showed presence of IGg antibodies were found at a rate of 42.44% from 172 cattle (73) positive. Titers of IGg was high among females compare male and highly antibody recorded in older animals 2-3 years compare with less than 2 years. According to the regions Abo-alkaseeb has been highly infected animals out of 57cases 33(64.7%) positive. Samples of hard and soft ticks were collected from Basrah governorate, were classified to the family Ixodidae ticks include three species, including: Rhipicephalus sanguineus, Hyalomma anatolicum and Hyalomma truncatum. The widespread type is the Hyalomma type. The presence of the virus has been found in animals in which there are more ticks than in animals that are tick-free. These results suggest that is (CCHV) widespread in the cattle populations southern of Iraq.

The increasing resistance of head lice Pediculus humanus capitis to many drugs has highlighted the need for new alternatives to control head lice in adults. The effect of two types of extracts (aqueous and alcoholic) of Citrullus colocynthis fruit on adult lice was tested in vitro. The results showed that the alcoholic extract with a concentration of 20% showed similar efficacy in killing adult lice to that of Natroba 9% w/ w, with values ranging between 87% to 98% within 18 minutes, followed by a 20% aqueous extract with a 44% to 79% death rate. A 10% concentration of both types of extracts had moderate lethality for lice, while a 5% concentration did not show strong lethality for adult lice. These results revealed significant differences between the control group and those treated with alcoholic and aqueous extract concentrations of C. colocynthis fruits at the probability level p ≤ 0.05.

The cats might severely affected and became carrier for Hemoplasma spp., sothe current study were aimed to investigate hemoplasmosis in cate in Basarh city,Iraq.This work was conducted via examine (20) cats of local cat breeds in Basarhcity, using their blood samples for stained smear and blood parameters.The Giemsastained blood smears revealed seven (35%) cats infected with Hemoplasmosis.However, thirteen (65%) was found negative. Diseased cats show pale and or/ictericmucos membranes, dehydration, emaciation, loos of appetite, and weakness,Moreover , a significant increase of body temperature, respiratory and heart rate wasindicated. Results was also show a significant decrease of RBC,HB and PCV ofdiseased cats which reflected Normocytic Normochromic type of anemia.Hemoplasma spp. of infected cats appears round or rod shape singular or chainedlocated on the cell membranes of the infected erythrocytes .It was concluded thatfeline mycoplasmosis lead to deleterious effects which might terminated with deathof affected cats .

Many scolicidal agents have been used to destroy fertile protoscolices, but these scolicidal agents have side effects, highlighting the need for research on effective and non-toxic replacement scolicidal agents. Gold nanoparticles (AuNPs) are biocompatible and non-toxic. The current study examined the effects of AuNPs in killing the protoscolices of Echinococcus granulosus in vitro using eosin staining. The protoscolices were treated with 0.2, 0.4, 0.8, or 1.0 mg/mL of AuNPs for 15, 30, 45, or 60 minutes. A concentration of 1.0 mg/mL was the most efficient in killing the protoscolices after 60 minutes exposure, reaching 96%, followed by 0.8 mg/mL (84.5%), whereas 0.4 and 0.2 mg/mL of AuNPs achieved a death rate of 76.8% and 68.5%, respectively. The loss of the protoscolices was lower at shorter exposure times with the same concentration of AuNPs and increased as the AuNP concentration was increased at the same exposure time. Significant differences were found between the different groups compared to the control group.