No abstract

Contact dermatitis is a lesion of the skin of broilers, which leads to a decrease in the quality of the carcass by 15-30 %. It is described as brown-black erosions and ulcers that occur on the breast (breast blisters, BB), hock burns (HB) and on the skin of the central pulp of the foot (food pad dermatitis, FPD). The most commonly affected is the pulp of the foot, followed by the hocks and chest. There are a number of factors that lead to crumb dermatitis. These include: the density of planting birds; type of troughs and the order of their use; feeding; the level of temperature and humidity in the room; type of litter, its quality and quantity; intestinal health. Birds are kept at a density of 8 individuals/m2 suffered less from dermatitis than those kept at a density of 13 individuals/m2 . Moreover, the harmful effects of high density were particularly pronounced at 18 individuals/m2 . The prevalence and severity of this pathology in broilers increases at later stages of fattening. Pododermatitis spread to several layers of skin. The condition of the crumbs worsened when the bird reached slaughter age with up to 64 % of the carcasses affected. In this case, lesions of the hocks and chest were rare. Wet litter (> 30 % moisture) is associated with an increase in the incidence and severity of contact dermatitis in broiler and turkey housing systems. This state of litter is most often registered in the winter-spring and autumn seasons. The quality of the litter, especially taking into account its humidity, has been identified as an important issue of well-being, which has a great negative impact on the condition of feathers, limb health and the frequency of contact dermatitis. Litter temperature is also important. With its growth, the degree of contact dermatitis increases. The reason for the increase in litter temperature is the increase in planting density and the accumulation of more manure, which enhances bacterial fermentation. With wet litter, bird feathers become wet or contaminated with litter, feces and dirt. It loses its protective properties. The level of bird welfare is declining sharply. Diagnosis of contact dermatitis in poultry is based on characteristic clinical signs. These are lameness, impaired mobility and discoloration of the skin, which often develops into an ulcer. The lesions are clearly separated from the intact tissue and often appear as ulcers surrounded by a deep hemorrhagic shaft. Contact dermatitis can develop in less than a week. Characteristic signs at the beginning of the disease are swelling, redness and increase in local temperature, thickening of the skin. Deep ulcers usually lead to abscesses in the underlying tissues and structures. Often the affected area is covered with crusts. If large ulcers develop, they can cause pain, slow growth, obstruct gait, and open bacteria to underlying tissues. Key words: broilers, contact dermatitis, dermatitis of the central pulp of the finger, dermatitis in the area of the hocks, dermatitis in the chest.

The study of the structure of morbidity or individual nosological groups of diseases involves not only establishing the degree of their prevalence, but also, depending on the methodology of such studies, makes it possible to identify the prevailing clinical and morphological forms, the objectivity of diagnostic algorithms and the effectiveness of therapeutic measures, which makes it possible to assess the state of the solution or another clinical problem, adjust the ways to solve it and improve clinical management and form directions for improving the market for therapeutic agents. The aim of the work was to establish the structure of the types of different clinical and radiological forms of comminuted bone fractures in dogs according to the principles of the international classification AO/ASIF. We performed a clinical and radiological assessment of comminuted fractures of long bones in dogs (n=24) with spontaneous bone injuries admitted to the Interdepartmental Small Animal Clinic of Belotserkovsky NAU, in which 26 comminuted fractures were diagnosed. The main forcing ship fractures were car accidents - 58.4%, alarming world causas unverified creatures of bloodshed - 20.8%, injuries caused by other creatures - 12.5% and 8.3% - falling from height. According to thestate factor, the removal from white grains is 70.8%, and in 62.5% - animal with weight of 11 kg, and in 54.2% - dogs of different breeds, while 45.8% were outbred. Comminuted fractures according to morphosegmental localization were: diaphyseal - 46.2%, metaphyseal - 42.3%, epiphyseal 11.5%. According to the principles of the international classification AO / ASIF, their largest share - 50%, belongs to type C, 46.2% - to type B and the smallest - 3.8%, to the simplest type A. Within the subgroups of the largest - 19.2 %, the proportion for subgroups B1, B2 and C2 turned out to be slightly less - 15.4% for C1 and C3 and very small - 7.8% and 3.8% for B3 and A2, respectively. Consequently, the morphosegmental localization of the typification of the type and complexity of fractures according to the principles of the AO/ASIF classification provides more detailed information, which creates the basis for the proposed choice of the most rational methods and means of osteosynthesis. Key words: osteosynthesis, reparative osteogenesis, femur, tibia, radius, ulna, humerus.