Leukosis in cattle
Bovine leukemia is a chronic infectious disease caused by an RNA-containing virus of the Retroviridae family. The infectious process in bovine leukemia is characterized by stages. Three stages or periods can be distinguished in the development of the infection: incubation, hematological, and tumor. The source of the pathogen are animals infected with the bovine leukemia virus (BLV) at all stages of the infectious process. Animals become infected upon entry into the body of lymphocytes containing the leukemia virus, enterally and parenterally.
Factors of virus transmission include: blood, milk and other materials containing lymphoid cells from animals infected with bovine leukemia virus
Source: Order of the Ministry of Agriculture and Food of Russia dated 11.05.1999 No. 359 "On approval of Rules for prevention and control of bovine leukemia" (Registered by the Ministry of Justice of Russia on 04.06.1999 No. 1799)
Морфология
Род
Понятие «лейкоз крупного рогатого скота» мужского рода.
Склонение и число
| Падеж | Единственное число | Множественное число |
|---|---|---|
| Р | лейкоза крупного рогатого скота | лейкозов крупного рогатого скота |
| Д | лейкозу крупного рогатого скота | лейкозам крупного рогатого скота |
| В | лейкоз крупного рогатого скота | лейкозы крупного рогатого скота |
| Т | лейкозом крупного рогатого скота | лейкозами крупного рогатого скота |
| П | лейкозе крупного рогатого скота | лейкозах крупного рогатого скота |