Breed and age semen quality peculiarities of the breeding boars "Kama bacon" enterprise

Landrace boars` semen differs from other breeds by large volume of ejaculate at a low concentration of spermatozoon. With age in large white breed boars sperm there is an increase in ejaculate volume and quantity of sperm doses from one ejaculate, an extension of sperm survival, the increase of mobility and reduction of pathological sperm forms. However, the sperm concentration indices, fertility percentage and fecundity of inseminated sows increased from 7-8 months to 12-23 months.