Mule production. Page: 3
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MULE PRODUCTION 3
"bully" mules into going through tight places; they are somewhat
like sheep, and if the leader can be induced to go the rest will follow.
Next to satisfying a hearty appetite, the height of mule joy is to roll.
A nmule will roll at every opportunity and often at inopportune times.
when lie makes tlie ol)portunity suit his own convenience. He dislikes
mud and water holes in the road, does not work well on soft, muddy
ground0, and is what is known as a sure-footed animal.
Figure 1.-A pair of farm mules.
PRODUCTION OF MULES
The mule is a hybriid animal having a jackass, commonly called a
jack, for a sire and a mare for a damn. When the reverse cross is
made and the female ass (or jennet) is bred to a stallion, the offspring
is called a "hinny." In practically all instances, tile mule is an
infertile animal and is incapable of reproduction. This is true particularly
in the case of the mae mia ule, and no occurrences have been
reported in which the service of such an animal has produced young.
Lack of fertility in the male mule is attributed to various factors, such
as cryptorchidism, absence of spermatocytes and spermatozoa, and inability
of tile chromosomes to function properly in the essential pairing
process. Fertility in mare mules is quite rare but it does occur
occasionally. Three apparently authentic instances of this kind that
have been reported within somewhat recent years are as follows:
At the Texas Agricultural and( Mechanical College, College Station, Tex., an
aged mare mule had a female foal in June 1920 as a result of service to a jack.
In September 1923 the same imare imule had a male foal sired by a stallion. The
female foal never produced progeny, but the male foal was later used in breeding
work aim sired some colts.
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Williams, J. O. (John Oscar), 1885- & Speelman, S. R. (Sanford Reed), 1894-. Mule production., book, 1949; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc1784/m1/5/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.