Question

A bullock is more docile compared to a bull, because of _________________.

• A. high levels of cortisol
• B. lower levels of testosterone
• C. lower levels of thyroid hormones
• D. lower levels of emergency hormones

Answer 1

The correct option is B lower levels of testosterone

Bull is a superior quality male used for mating purposes. It is much more muscular than cows, with thicker bones, larger feet, muscular neck, and a large bony head.

A bullock, on the other hand, is a castrated bull, a draught breed of male cattle used for pulling the cart, ploughing in the field.

Compared to a bull, a bullock is more docile because of lower levels of blood testosterone. Once castration (removal of testicles) is done, testosterone hormone level goes down in the blood as testosterone is produced from the testicles.
Castration is performed for the purpose of improving the quality of meat and decreasing the aggressiveness of farm animals.

Cortisol (glucocorticoid) is secreted from the adrenal cortex; thyroid hormones are secreted from the thyroid gland and emergency hormones (adrenaline) are secreted from the adrenal medulla. The level of these hormones is not affected due to castration.
So, the correct answer is 'b'.