being that there are well documented cases of female mules reproducing, even with the common misconception that they are all sterile. I Wounder if persistance would prove a x pheasant mutant viable.
the reciprocal cross of the scovy. is known as a hinny, bred not only in s.e. Asia where traditionally they use a hands on approach in a pond to facilitate breeding. but also in France.
Mules are the result of a jack on a mare while hinnies are the result of a stallion on a jenny.
Hinnies are harder to produce, both because of chromosome count issues and the fact that jennys and stalllions appear to be
more choosy about whom they mate with than mares and jacks.
Hinnies have the more careful way of going of the donkey, while mules move more like horses. Since hinnies are more cautious
in their footing, they are considered by keepers to be superior to mules on rough dangerous and dangerous ground. They are
also apparently more willing to eat the tough forbs donkeys will eat and that many mules reject in favor of more horse type feeds.
I have heard that both a fertile hinny molly a fertile mule molly have been documented in China; I don't know the details. I could only access an abstract of the research
article:
http://www.ncbi.nlm.nih.gov/pubmed/3378453
The Lucky Three Ranch, a major trainer and breder of mule, states on their website:
Although hybrids are typically sterile, two documented cases of fertility do exist. One was known as Old Beck from Texas A&M, bred first by stallion, Pat Murphy, and yielded the hule, Pat Murphy, Jr. She was bred a second time to a jack and produced the jule, or donkule Kate. The other was Krause, belonging to Arthur Silvester in Champion, Nebraska. She was bred to a jack twice and foaled first with Blue Moon, and then with White Lightning. More numerous cases have emerged with the new technology and better national and international communication.
Mules are also used in the equine industry for embryo transplants.
There are no documented cases involving fertile male mules.