To increase the lactation period and to make the breed disease resistant, the crossbreed developed is:
(A) Horse and Bos Indicus
(B) Karan Swiss
(C) Karan Fries
B & C
Karan Swiss and Karan Fries are improved variety of cows developed by cross-breeding which produces rich and high-quality milk and is highly disease resistant. The Karan Swiss is a dual purpose bred with the oxen being well suited for work and the cows giving good quantities of milk.