Аuthor: E. A. KOSINTSEVA, graduate student,
Ural State Agrarian University (42 K. Libknehta Str., 620075, Ekaterinburg; tel: +7 (343) 371-33-63)
Abstract: A huge role to establish the causes of neonatal diseases of calves plays normal functioning of the entire placental system a pregnant cow. Therefore, to reduce economic losses on the farm is important as soon as possible to diagnose pathological changes in the placenta. For this purpose we studied histological changes in the placenta 35 cows in two groups: with separated in time and delayed the placenta. Considering studied the relationship between the morphology of the placenta of cows, separated at different times after calving, it is possible already in the first hours of life of the calf to establish the possibility of intrauterine hypoxia, intoxication, exposure to infectious agent born young. During the experiment it was established that in the group of cows histological examination of the placentae, separated in time, identified mainly changes characteristic of physiological aging of the placenta. In the case of detention of the placenta, these changes were atrophic, necrotic nature, revealed a vivid picture of inflammation, indicating the presence of bacterial infection. The paper presents a micrograph made by Leica microscope, confirming revealed changes characteristic of the two study groups.
Keywords: histological changes, placenta, cows, retention of placenta.
