Which behavior is a clear sign that a cow is in standing heat?

Which behavior is a clear sign that a cow is in standing heat?

• A. Increased tail swishing
• B. Standing to be mounted by a male or another cow
• C. Reduced appetite
• D. Grooming

Answer: (B)

In estrus, cows become receptive to mating, and the most reliable indicator is that she will stand still when another animal tries to mount her. This “standing to be mounted” behavior shows she is emotionally and physically ready for mating, which is the clearest signal of standing heat and is used to time insemination. Other behaviors aren’t as specific. Tail swishing can be due to insects or irritation, not necessarily estrus. A reduced appetite may happen with heat or illness, not a definite sign of standing heat. Grooming is common social behavior and doesn’t specifically indicate readiness to mate.

In estrus, cows become receptive to mating, and the most reliable indicator is that she will stand still when another animal tries to mount her. This “standing to be mounted” behavior shows she is emotionally and physically ready for mating, which is the clearest signal of standing heat and is used to time insemination.

Other behaviors aren’t as specific. Tail swishing can be due to insects or irritation, not necessarily estrus. A reduced appetite may happen with heat or illness, not a definite sign of standing heat. Grooming is common social behavior and doesn’t specifically indicate readiness to mate.