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Topic:Mule
Mules arena distinct equine species with unique physiological and behavioral characteristics. Horses, belonging to the species Equus ferus caballus, are domesticated animals known for their speed, strength, and versatility in various roles, including riding, racing, and work. Mules, on the other hand, are hybrid animals resulting from the crossbreeding of a male donkey (jack) and a female horse (mare). They inherit traits from both parents, often exhibiting the endurance and hardiness of donkeys combined with the size and strength of horses. Mules are typically sterile due to their hybrid nature, possessing 63 chromosomes, an intermediate number between horses and donkeys. This page compiles peer-reviewed research studies and scholarly articles that explore the genetic, anatomical, and behavioral differences between mules and horses, as well as the mule's role in agriculture, transportation, and recreation.
Microscopic lesions in the hearts of aged horses and mules. The hearts of 23 aged equids (18 horses and 5 mules) were examined histologically. Major findings included arteriolosclerosis and intimal bodies in small muscular arteries, myocarditis, myocardial fibrosis, fatty metamorphosis of myocardial and Purkinje fibers, myocytolysis, and basophilic (mucinous) degeneration of myocardium. Lesions less frequently seen included chronic fibrotic valvulitis, acute myocardial necrosis, sarcosporidiosis, and hemosiderosis. Single cases of malignant melanoma, cartilaginous metaplasia of the I-V septum, mineralization of connective tissue in the I-V septum, and ...
Functional and morphologic pathology of equine aortic insufficiency. Twelve horses and 3 mules with grade II or louder prolonged diastolic murmurs were selected for functional and histopathologic study. Aortic insufficiency was demonstrated in all mules and in all except two horses on the basis of murmurs, jet lesions and/or pathologic and incompetent valve cusps. In 15 control animals lesions resulting in aortic insufficiency were not found.
A thick fibrous band was present on all aortic valve cusps judged to be definitely insufficient. This band occurred at the line of valvular closure, parallel to the free edge, and allowed eversion of the peripheral portio...
Sex-Linkage of Glucose-6-Phosphate Dehydrogenase in the Horse and Donkey. Distinctly different electrophoretic patterns of red cell glucose-6-phosphate dehydrogenase were resolved from the hemolyzates of horse and donkey erythrocytes. Examination of their reciprocal hybrids, mules and hinnies, showed that the red cells of female mules and female hinnies contain both horse and donkey G-6-PD; the male mule with an X chromosome from its horse mother contained pure horse G-6-PD, whereas the male hinny with the donkey X chromosome contained pure donkey G-6-PD. These findings on the male reciprocal hybrids suggest X-linkage.
Chromosome Study Of An Alleged Fertile Mare Mule. This study is oriented towards explaining the usual infertility observed in mule and hinny species through a detailed investigation of their chromosomal structures, with a special emphasis on the instances [...]
A Preliminiary Note on the Nature and Pathology of the Disease Known as “Surra,” Affecting Horses and Mules in India. This research article presents an initial investigation into the disease called “Surra,” which significantly affects horses and mules in India, leading to high mortality rates and considerable economic loss. The [...]
Emergency Management for Donkeys and Mules. This article provides an overview of initial assessment and management of common emergency presentations in donkeys and mules. The principles are similar to those in horses (and ponies), but clinicians must be aware of differences in recognition of signs of pain/disease, approach to handling, pharmacology of some drugs, and subtle differences in the physiology and local anatomy in donkeys and mules. The epidemiology of common disease presentations will vary between pet/companion or working/farmed donkeys and mules. Regular dental checks, deworming, vaccination, and monitoring of behavior and q...
