Tuesday, April 11, 2017

When are stallions most fertile?

Stallions appear to reach full fertility at about three years (although yearlings can and do get mares pregnant - including their own dams). They typically remain fertile into their 20s - as in most mammals, males don't decline in fertility as early or dramatically as females. In fact, stallions are more often retired from breeding because arthritis is making it hard for them to mount mares than because of fertility issues.

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