Changes of indises of fresh and deconserved sperm of stallions after their vaccination against Siberian plague

Abstract

The aim of the work is to find out the influence of vaccination of stallions against Siberian plague on the sperm quality and its criostability. Vaccination of stallions against Siberian plague led to the decrease of the sperm quality.During the first week productivity of sperm decreased in 10%. In freshly diluted sperm mobility decreased on average 12%, survival on 38% (Р0,99), membrane safety - on 20 % (Р0,95). Recovery was observed not earlier than in 28 days. Particularly sharply vaccination affected the sperm quality after crioconservation: sperm mobility decreased on average 35 % (Р0,99), survival on 45% (Р0,99), membrane safety on 46 % (Р0,99). Rejection of sperm doses in post-vaccination period were 50% because of the decrease of quality below normative level. Number of pathological types of sperm increased in 45 days after vaccination: on 27% (Р0,95) in fresh sperm and in 34% (Р0,99) in deconserved. In case of cryoconservation of stallions sperm it is necessary to take into account the recovery period of antiepizootic measures.