Question

The lack of which vitamin causes night blindness in cattle?

(a) vitamin K

(b) vitamin B

(c) vitamin A

(d) vitamin C

I have been asked this question by my college professor while I was bunking the class.

The query is from Cows in Dairy topic in division Building Blocks of Dairy Processing of Dairy Engineering

Answer 1

Correct option is (c) vitamin A

For explanation I would say: Vitamin A deficiency (VAD) or hypovitaminosis A is a lack of vitamin A in blood and tissues. It is common in poorer countries but rarely seen in more developed countries. Nyctalopia (night blindness) is one of the first signs of VAD.