Sterilised cow skim milk or UHT skim milk (long life milk) is the most convenient diluent to use on farms. Conception depend on number of mobile spermatozoa and not on volume. Diluent used to extend life span of semen for 1-2 hours and to have a slighter higher volume for easier AI. Semen with density of cream to thick cream and motility of 5 and 4 can be diluted 1+2 to 1+3. Insemination dose 0,1ml-0,2ml/ewe. Thin cream semen with motility of 3 / 4 – diluted only 1+1.