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Background: Canine demodicosis is an inflammatory parasitic skin disease associated with the presence of excessive numbers of Demodex mites. The pathogenesis involving demodicosis is not completely recognized. It is suggested that demodicosis occurs because of the inability of the host to regulate mite intensity, rather than from an elevation of the mite virulence. The acute phase response is a part of the innate defence system of the host against trauma, inflammation, and infection. Some of the cytokines involved in pathogenic phenomena in canine demodicosis are known as inducers of the acute phase response. Among the large group of acute phase reactants, C-reactive protein (CRP) may have special attention in canine demodicosis, because of its relationship with cytokines involved in the development of skin inflammation. In this study we sought to elucidate the relationship between generalized demodicosis and the serum concentration CRP in dogs. Materials, Methods & Results: Twenty two dogs (n = 14 demodicosis, n = 8 healthy), enrolled in the study were recruited from the dogs referred to 5 different veterinary practices participated. Dogs of various breed, both sexes, entire/neutered were included in the study on the basis of being Demodex canis mite positive on microscopic examination of skin scrapings. Cytological examination of the skin scraping showed no yeast nor bacteria. The animals exhibited at least one of the following clinical signs of generalized demodicosis: presence of = 5 spot lesions, involvement of = 25% of the dog's face or of its body surface, pododemodicosis involving two or more feet. None of the dogs completing the study had been treated with ectoparasiticides or steroidal anti-inflammatory drugs in the last 30 days before the onset of the study. Plasma CRP concentration was determined using commercial ELISA test kit and an ELISA reader according to the manufacturer instructions. Statistical analysis were performed by Mann-Whitney U test. P values of less than 0.05 were regarded as significant. Serum CRP concentration was significantly higher in dogs with generalized demodicosis compared to those of control dogs Discussion: The present study presents for the first time a survey of the acute phase protein expression regarding CRP in serum of dogs affected by demodicosis. Results indicated that the concentration of investigated, including serum CRP, significantly increased in infected dogs. From a clinical perspective, acute phase protein measurement is a useful clinical tool in veterinary medicine but further studies are required to assure their value in particular diseases, because the acute phase response shows variation in different species and pathological processes. The mean plasma levels of the C-reactive protein measured in the peripheral blood of the 14 dogs included in the present study with generalised demodicosis were significantly elevated compared to those of the healthy controls. The results indicated that in generalised demodicosis acute phase response can be mobilized. According to results of this study, we thought that Demodectic mite may have the potential to stimulate an inflammatory response in dogs with generalized demodicosis. This information provides a remarkable potential for use in clinical practice for dogs, hence these biological markers may be very useful for the early diagnosis of inflammation due to the demodectic mange. Although the numbers of dogs investigated in this study was small, CRP concentration could be beneficial in monitoring the response to treatment in dogs with generalized demodicosis. Further studies are warranted for evaluating the clinical usage of this parameter for monitoring the efficacy of therapy in dogs with demodicosis. [ABSTRACT FROM AUTHOR]

Background: Pestiviruses cause economically important diseases in domestic ruminants worldwide. Border Disease is a congenital viral infection of sheep, caused by a pestivirus, and is first reported in the Border region of Wales and England. The BDV has worldwide distribution in sheep with different prevalences among countries. Vertical transmission is an important route in the epidemiology of this virus. Infection of fetuses may cause birth of persistently infected lambs, that are viremic, antibody negative, and are excreting virus. The disease is characterized by abortion, barren ewes, stillbirth and persistently infected weak lambs showing neurological and dermatological signs. The economic importance of the disease is related to reproductive failure, abortions and significantly low survival rate of affected lambs. In the present study the aim was to describe clinical, hematological and seological aspects of natural Border disease virus (BDV) infection in a sheep flock in Cine, Aydin. Besides we sought to elucidate the relationship between natural (active infection) and persistent BDV disease and the serum concentration of haptoglobin (Hp) and serum amyloid A (SAA) in infected sheep. Materials, Methods & Results: Field observations were carried out in a sheep flock comprising 327 sheep with a history of an outbreak abortion in Cine town in Aydin, Turkey. Twenty-five out of 327 sheep in the flock was monitorized by blood sampling. The animals were selected among aborted ones, at least once, into two weeks preceeding period or with a history of weak lambing. BDV antigen (persistent infection) was detected in 8 out of 25 sheep (32%) while antiviral antibodies (active infection) were detected in 18 animals tested (68%). The disease was mainly characterized by abortions, stillbirth/weak lamb and abnormal brown/black fleece pigmentation, which occurred in an epidemic form. Twentyfive sheep were related to disease condition as detected serologically, and the ratio of the number affected to number at risk being was 17:8. The culling rate was 50% of the affected animals. Most of the affected animals were second lambing sheep (5/25, 20%). Hematological variables did not reveal statistical difference whereas serum concentrations of Hp (P < 0.05) and SAA (P < 0.01) were significantly higher in naturally infected sheep in contrast to persistently infected sheep with BDV. Discussion: Clinical signs and detailed laboratory analysis related to natural Border disease outbreak have never been reported in Turkey, although previous epidemiological studies had shown that Border disease virus infection is relatively common in some parts of Turkey in sheep flocks and persistent Border disease virus infection had been described in apperaently healthy sheep in Turkey. In the present study the disease was mainly characterized by abortions, stillbirth/weak lamb and abnormal brown/black fleece pigmentation, which occurred in an epidemic form. Besides bronchopeumonia, enteritis and conjunctivitis were detected in a limited population. Neurological signs were only observed in 2 animals. Besides persistent infection was detected in 32% of sheep enrolled. An acute phase reaction involving Hp and SAA has been identified in the present study. These results indicate that the monitoring of selected acute phase proteins may increase the diagnostic information available as a result of their analyses in naturally infected sheep and persistently infected sheep with BDV. [ABSTRACT FROM AUTHOR]

Background: The acute-phase response to infection is also characterized by an increase in protein turnover plus an increased loss of protein. Leukocyte proliferation and the synthesis of cytokines, immunoglobulins and positive acute phase proteins(APPs) contribute to protein turnover APPs levels, as markers of inflammation, usually rise significantly during the course of acute and chronic infections in the bovine. There has been a great interest shown on the usage of APPs as a marker of animal health or, alternatively, as an indicator of disease severity in veterinary medicine . Haptoglobin (Hp) and serum amyloid A (SAA) are important APPs in cattle , in different viral and bacterial infections The purpose of the present study was to investigate the influence of infection on acute-phase proteins in seldom persistent positive BVDV cattles, that were free of signs and symptoms of secondary infections. Materials, Methods & Results: Blood samples, from a total of 313 cows from three different farms, were collected in 10 mL polystyrene tubes coated with an anticoagulant (EDTA). Commercial BVDV antigen ELISA kits were used to determine the persistently infected animals. Sampling was carried out by two occasions within 40 days intervals. A total of 11 dairy cows were found BVDV Ag positive in both occasions, were evaluated as persistently infected. Eight non-infected dairy cows from same herds were served as control group. All animals were examined on the day of blood sampling. The levels of haptoglobin and SAA in serum were determined by use of the commertial kits . Statistical analyses were performed by Mann-Whitney U-test; P < 0.05 considered significant. None of the persistently infected animals showed clinical findings and a few of them were considered as poor doers, but they were unnoticed until they were identified as persistently infected animals. No clinical findings were observed in healthy control cows in routine clinical examination. Serum concentration of Hp in persistently infected cattle with BVDV was significantly (P < 0.05) higher than the controls. Serum amyloid A concentrations were also significantly higher in persistently infected cattle with BVDV than the controls . Discussion: APPs have been proposed as valuable indicators of the manifestation and severity of pathological conditions in humans and animals. Levels of APPs are preferentially elevated during acute bacterial infections and less pronounced or even missed during viral infections There are no reports on the alterations of the acute-phase protein profile in the persistent BVDV infection. In the present study, a significant increase in the positive acute-phase proteins haptoglobin and SAA in the symptom-free persistent cattles were detected. These alterations of acute-phase proteins may be associated to the enhanced production of IL-6 and IL-8 which modulate the synthesis of positive acute-phase proteins. Clinical symptoms were not noticed in our study. Such animals could easily be underdiagnosed in a farm population. Clinical symptoms were associated with increase in APPs. Moreover, supra-normal APP values in persistently infected cattle with BVDV were observed without clinical symptoms. The role of inflammation as defined by Hp and SAA levels have not been fully explored in the context of persistently infected cattle with BVDV disease. The results of this study indicated that serum concentrations of haptoglobin and SAA were increased in persistently infected cattle. Moreover, it may be suggested that measurement of SAA and Hp may be of valuable in indicating suspected persistently infected animals with BVDV in screening herds for general health status. [ABSTRACT FROM AUTHOR]

Background: Bronchopneumonia caused by Mannheimia haemolytica affects sheep of all ages worldwide and may be devastating especially in young animals undergone recent stress (i.e. transportation, weaning, mixing with animals from different farms. It is a common cause of morbidity and mortality in lambs and kids, especially in those that have not received adequate colostrum or in which passive colostral immunity is waning. Yearly herd losses costing millions of dollars have led to research focused on theurapeutic trials and vaccine production because of various strains isolated demonstrating the continuing economic importance of Mannheimia haemolytica infection. A field trial was performed under commercial sheep farm located in Western Turkey, Aydin in an attempt to investigate the efficacy of an injectable formulation of florfenicol against naturally occuring Mannheimia haemolytica. Materials, Methods & Results: A total of 27 Sakiz breed lambs at the age of 36-60 days old, of both sexes, with naturally occuring M. haemolytica infection were included in the present study. Prior to allocation into groups, a detailed clinical examination carried out in all the lambs, revealed a variety of abnormal findings: coughing, presence of nasal and ophthalmic discharge, increased respiratory rate and rectal temperature and abnormal sounds at lung auscultation. A total of 27 samples taken from transtracheal aspiration bronchoalveolar fluid in the Sakiz breed lambs were taken into sterile containers in an attemp to perform isolation and identification of Mannheimia haemolytica. The antibiotic susceptibility tests for Mannheimia haemolytica strains isolated from transtracheal aspiration bronchoalveolar fluid were carried out by disc diffusion as described previously. On days 0, 1, 7, 15 and 30 sheeps were given a clinical score. The clinical lesion score (scores from 0 to 3) was derived from the clinical signs (feed consumption oral and nasal discharges, coughing lung auscultation findings, complete clinical examination) and was carried out by an investigator blinded. The lambs were randomly allocated into 2 groups until the required number of lambs in each group was reached. Lambs in group F (n = 17) were subcutaneoulsy injected with a single dose of florfenicol (dosage 2 mg/kg bodyweight); lambs in group C (n = 10) did not receive an antibiotic treatment and were left as controls. The efficacy of florfenicol was assessed clinically and on the basis of a lesion score derived from the physical examination. Throughout the study florfenicol treatment significantly decreased (P < 0.01) the investigator's clinical scores while no significant changes were detected in the untreated control group. Discussion: M. haemolytica is a commonly recognized responsible agent for respiratory diseases in sheep and several therapeutic antibiotics have been suggested for treatment applications. Florfenicol, that might have the potential of efficacy against M. haemolytica has not been used in sheep, therefore there is lack of data regarding its efficacy and safety. Despite the efficacy of the drug against respiratory infections of calves and pigs has been documented. Besides bioavailability and pharmacokinetics of florfenicol was evaluated solely in healthy sheep. Based on clinical scoring and complete remission, and supporting laboratory signs involving antibiogram studies, results of the present study may indicate that florfenicol may be a good and safe choice for treatment of respiratory infections due to M. haemolytica. The present results were supported by the gradual improvement and alleviation of clinical signs and, clinical remission within description of scores and the absence of pathogenic organisms in transtracheal aspiration after treatment. Furthermore, florfenicol-treated lambs had a significantly better clinical improvement and cure that that of untreated control group of animals. [ABSTRACT FROM AUTHOR]

Objective. The purposes of this study were to determine whether secnidazole administered at a single dose of 10 mg/kg, orally, lessens or eliminates Giardia cyst shedding, and to validate the benefit of secnidazole treatment on clinical signs and faecal consistency in lambs naturally infected with Giardia duodenalis. Materials and methods. To this extent weaned 12 weeks of age lambs were selected and randomly assigned into two groups based on placebo (group C, n=7 untreated control group) or treatment (group S, n=10 lambs treated with a single dose of secnidazole at 10 mg/kg). Results. On days 0 and 10, before and after treatment, respectively, reduction in cyst excretion was determined. The faecal consistency and general health were recorded at each sampling day. Conclusions. During the study there was a high (99.98%) reduction in cyst excretion in the secnidazol treatment group compared to the positive control group on day 10, resulting in a significant (p<0.001) reduction, making secnidazole highly effective treatment option. [ABSTRACT FROM AUTHOR]