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The shooting of protected species, especially rare animals, is regarded as a priority issue by law enforcement authorities. In such cases, an expert veterinarian is required not only to confirm the death of the animal as a result of shooting, but also to provide a precise description of the shot. In cases of shootings with pellet bullets, such a description is particularly difficult. The evaluation of the gunshot wounds of an osprey (Pandion haliaetus) delivered to the Veterinary Medical Centre at the University of Poznań called for the use of a variety of diagnostic techniques. A preliminary assessment confirming the shot was based on an X-ray photo. Computed tomography (CT) was used for in-depth diagnostics, providing a spatial representation of bullet stopping points and fragments. The shot caused a lower leg bone fracture. This damage upset the anatomical structure of the animal’s limb, which made it impossible to establish the wound channel by CT. Therefore, full shot characteristics could only be made only after a classical post-mortem examination. This examination facilitated the use of modern imaging diagnostic techniques. The use of mixed diagnostic techniques enabled us to determine the number of shots, the type of ammunition used and the direction from which the shot was fired. On the one hand, this case illustrates the possibilities offered by modern imaging diagnostic techniques and, on the other hand, it shows that the classic post-mortem examination remains a primary diagnostic tool for veterinary forensic experts. This is especially important when preparing forensic veterinary opinions in high-priority law enforcement cases.
Canine hip dysplasia is a complex skeletal malformation caused by genetic and environmental factors. The prevalence of hip dysplasia in different canine breeds ranges widely, from 1% (for Whippet and Borzoi) to over 70% (for Bulldog and Pug). These differences indicate the presence of genetic variants predisposing to or preventing this disorder in gene pools of particular breeds. The importance of genetic factors is also confirmed by a high coefficient of heritability (h2) of canine hip dysplasia, which for most breeds oscillates around 0.5 – 0.6. Application of modern genomic methods, that is, mainly genome scanning (based previously on microsatellite markers and currently on SNP microarrays) has led in recent years to the identification of potential genetic markers associated with this disorder. Such studies were carried out mostly in two breeds: Labrador retriever and German shepherd. Some of the markers were found in the vicinity of genes involved in skeletal development. Following these achievements, the use of some markers has been suggested for early risk diagnosis of hip dysplasia. This shows that molecular testing is becoming important for not only monogenic, but also polygenic canine diseases and disorders. Identification of genetic markers associated with predisposition to hip dysplasia offers an opportunity for an early risk evaluation of this disorder (prior to its first signs). Moreover, it facilitates effective breeding selection aimed at eradicating undesirable genetic variants from the gene pool of a given breed.
The aim of our research was to examine bone health in white-tailed eagles (Haliaeetus albicilla) that died in the years 2010-2016. The research was conducted on 37 complete skeletons of eagles that came from the territories of Poland and Germany. CT and digital radiography were used in the research, and anatomical and histological analyses were carried out. We described macroscopic bone lesions in 14 birds. The most frequently found forms of pathological changes were osteophytes, which formed mainly in pelvic limbs. They were found less frequently in certain wing bones, as well as the clavicle and the sternum. In four cases, proliferative bone lesions were accompanied by osteoarthritis. Osteochondritis dissecans (OCD) was diagnosed in six birds, including one in the early stages of the disease. The lesions were found in most cases in the knee joint area and affected mainly the proximal epiphysis of the tibiotarsal bone. In one bird, a macroscopic presentation typical of osteomyelitis was observed on the tarsometatarsal bone, which might have been associated with its fracture and lysis. There was also one case of lesions typical of osteosarcoma. The analysis of individual bones of each skeleton revealed that bones from pelvic limbs more often underwent pathological changes, especially the tibiotarsus and associated joints. However, it is difficult to accept this observation as a rule without research on larger material. One cannot exclude the possibility that some types of changes in bones, such as osteosarcoma and OCD, may result from poisoning with heavy metals, particularly cadmium.
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