Dear aspirant, if you have done your undergraduate degree in animal husbandry and dairy then if you go for MSc in the same field you can easily get a job as a scientist and pursue your field as there is high demand in this field but if you go for MBA it is Management in business administration which is quite different from the field you are currently in and it will provide you a desk job. So now all what matters is your interest as both have good scope and salary lately.
Hope it helps.
All the best:)