The aim of this study was to compare the changes in the content of cTnI, cTnT and some biochemical parameters (CK–MB, LDH, AST, ALT) in Arabian racehorses before and after training. Diagnosis of myocardial disease in horses is very difficult due to the lack of specific cardiac signs. Cardiac diseases are seen as a cause of sudden death or decreased performance in horses. It has also been reported that excessive exercise may cause transient myocardial damage. In our study, 20 healthy stallion Arabian racehorses aged 4–10 y (6.00 ± 0.52 y) were used. Five millilitres of blood was collected from the V. jugularis of clinically healthy horses into serum tubes before and after training. Training time was determined as 30 min for each horse. Pre-training cTnI, cTnT, CK–MB, LDH, AST, and ALT contents were determined to be 0.130 ± 0.01 ng/mL, 0.007 ± 0.00 ng/mL, 231.15 ± 8.96 U/L, 692.45 ± 34.12 U/L, 309.92 ± 18.48 U/L, and 11.83 ± 0.92 U/L, respectively. After training, cTnI, cTnT, CK–MB, LDH, AST, and ALT contents were determined to be 0.169 ± 0.01 ng/mL, 0.008 ± 0.00 ng/mL, 289.80 ± 10.96 U/L, 704.25 ± 22.03 U/L, 328.47 ± 19.58 U/L, and 15.24 ± 1.03 U/L, respectively. As a result, it was determined that exercise triggered myocardial damage to some extent in Arabian horses. Exercise stimulates troponin release and the differences that may occur in troponin tests in horses after exercise should be taken into consideration.

Dirofilaria immitis (D. immitis); is a parasitic zoonosis with a prevalence of 53.8%, whose intermediate host is mosquitoes (Anopheles, Aedes, Culex, Taeniorhychus, Mansonia and Armigenes), final hosts are carnivores (dog, cat, fox, etc.) and humans. The causative agent settles in the pulmonary arteries and causes pulmonary hypertension, which can progress to congestive heart failure. Cardiac troponins (cTn), which have recently been used in veterinary cardiology, are considered the gold standard because of their high sensitivity and specificity for myocardial injury. In the study, high-sensitivity cardiac troponin T (hs-cTnT) and high-sensitivity cardiac troponin I (hs-cTnI) levels in healthy dogs were determined as 0.092 ± 0.009 and 0.135 ± 0.024 ng/mL, respectively. In dogs with D. immitis, hs-cTnT and hs-cTnI levels in healthy dogs were determined as 0.164 ± 0.035 and 0.234 ± 0.052, respectively. As a result; it was determined that there was an increase in hs-cTnT and hs-cTnI levels in dogs with D. immitis, although it was not statistically significant (p > 0.05). Considering that even the slightest change in the levels of troponins is prognostically important, it can be said that D. immitis causes myocardial damage in dogs.

Enzootic bovine leucosis (EBL) is a retroviral infection which is common all over the world. EBL causes huge economic losses due to milk loss, yield loss and death. In this study, it was aimed to investigate the presence of EBL by ELISA method from blood samples taken from cattle which were determined to be healthy because of clinical examination in Ardahan province and its counties in March-April 2021. For this, 500 cattle of different breeds and sexes between 1-10 years of age in different enterprises were sampled and the antibody response against EBL in the blood serum samples obtained was investigated with a commercial ELISA test kit. All 500 blood serum samples tested by ELISA were negative for EBL. As a result, EBL seropositivity was determined as 0% in Ardahan region as the studied area and time period.

Bovine ephemeral fever (BEF) is a viral infection that causes a significant decrease in milk and meat production, causes infertility in cows and bulls, abortion and a significant economic loss due to its rapid spread in the herd. Partial budgeting method was used in the study to measure the economic impact of vaccine use and not using the vaccine. In line with preventive medicine, it has been determined that if animals are vaccinated regularly, there is an average of $8.10 vaccination cost per animal, but the average treatment cost of an animal that has not been vaccinated during the epidemic is $20.2. It was determined in the economic analysis that in addition to the treatment costs, the loss of milk for a dairy cow increased to approximately $85, for a livestock to $148 with the loss of condition, but the economic loss increased due to high morbidity. In this context, early diagnosis, detection and monitoring of spreading conditions are as extremely important as vaccination in the fight against BEF infection. It can be said that the economic loss will be minimized with the vaccination and preventive medicine practices to be made by rapid intervention to the disease with the early warning system created by the Ministry of Agriculture and Forestry for this purpose in Turkey.

This study was designed to investigate associations between transfer of passive immunity, selected illness-es (diarrhoea, pneumonia, and fatigue anorexia syndrome-FAS) and growth performance [body weight (BW) and aver-age daily gain (ADG)] in preweaned lambs. A total of 347 lambs were blood sampled at 24±1 h of age after birth and the serum IgG concentration for each lamb was measured after colostrum intake using a commercial ELISA kit. Lambs were weighed on a scale immediately after birth (before colostrum intake) and reweighed on day 28 (end of neonatal period) and day 84 (age of weaning). Lambs ADG was calculated from 0 to 28 d of life, from 29 to 84d of life, and from 0 to 84 d of life. Growth performance (BW and ADG) of lambs with diarrhoea and FAS in the neonatal period and with pneumonia in the postneonatal period was significantly lower than that of healthy lambs of the same period (P