The length of oestrus cycle (in days) in goat is? by Sunday | Jul 9 | Agricultural Science WAEC | 0 comments A. 16 – 17 B. 18 – 21 C. 19 – 20 D. 20 – 22 E. 20 – 24 Correct Answer: Option B – 18 – 21 Users Also Read These:Oestrus cycle in the ewe occurs every?The half life of a radioactive substance is 14 days.…A radioactive substance has a half-life of 3 days.…An elastic material has a length of 36cm when a load…A radioactive substance has a half-life of 20 days…