How many days after breeding can a pregnancy be detected by ultrasound?
(a) Between 28 to 30 days
(b) Before 14 days
(c) Between 14 and 28 days
(d) Between 30 and 55 days
I have been asked this question by my school principal while I was bunking the class.
Query is from Cattle Health topic in division Cattle Health of Dairy Engineering