Given below are four statements (i)-(iv). Which two of the following statements are correct ?
(i) It is estimated that more than 70 percent of the world livestock population is in India and China.
(ii) Stringent cleanliness and hygiene (both of the cattle and the handless) are of paramount importance while milking, storage and transport of the milk and products.
(iii) Out-breeding is the breeding between animals of the same breed only.
(iv) Corsses between different breeds is called inbreeding.