Spontaneous Appearance and Transmission of Polydactyly in Dexter Cattle
A 3-yr-old Dexter cow and her yearling Dexter heifer calf exhibited polydactyly. Neither animal was linebred within 5 generations. This cow-calf pair represented the first reported occurrence of polydactyly in Dexter cattle in the US or abroad. Based upon external examination, the cow was classified...
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Wiley
2020-01-01
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| Series: | Case Reports in Veterinary Medicine |
| Online Access: | http://dx.doi.org/10.1155/2020/6407847 |
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| author | Richard Browning Jr. Emily G. Hayes Andrea S. Lear |
| author_facet | Richard Browning Jr. Emily G. Hayes Andrea S. Lear |
| author_sort | Richard Browning Jr. |
| collection | DOAJ |
| description | A 3-yr-old Dexter cow and her yearling Dexter heifer calf exhibited polydactyly. Neither animal was linebred within 5 generations. This cow-calf pair represented the first reported occurrence of polydactyly in Dexter cattle in the US or abroad. Based upon external examination, the cow was classified as having a spontaneous unilateral case of polydactyly with an extra digit along the medial digit of the right front limb and the heifer was classified as having bilateral polydactyly because both front limbs exhibited an extra digit along the medial digit. Radiographic examination confirmed bilateral status of the heifer and revealed bilateral status of the cow. The front feet of the cow and heifer had extra bone formation consistent with an extra digit along the medial digit. Neither animal suffered from limited mobility to date or required hoof treatments. The cow produced a second calf from a different sire, a bull calf that did not appear polydactylous per external examination and was not examined radiographically. The two polydactylous animals will remain in the breeding herd to produce more study calves unless their fitness becomes compromised. Genetic aspects of the cases are discussed. |
| format | Article |
| id | doaj-art-2de2e453c9f9458695a903bdc19ae52e |
| institution | Kabale University |
| issn | 2090-7001 2090-701X |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
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| series | Case Reports in Veterinary Medicine |
| spelling | doaj-art-2de2e453c9f9458695a903bdc19ae52e2025-08-20T03:55:07ZengWileyCase Reports in Veterinary Medicine2090-70012090-701X2020-01-01202010.1155/2020/64078476407847Spontaneous Appearance and Transmission of Polydactyly in Dexter CattleRichard Browning Jr.0Emily G. Hayes1Andrea S. Lear2Department of Agricultural Sciences, College of Agriculture, Tennessee State University, Nashville, TN 37209, USADepartment of Agricultural Sciences, College of Agriculture, Tennessee State University, Nashville, TN 37209, USALarge Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USAA 3-yr-old Dexter cow and her yearling Dexter heifer calf exhibited polydactyly. Neither animal was linebred within 5 generations. This cow-calf pair represented the first reported occurrence of polydactyly in Dexter cattle in the US or abroad. Based upon external examination, the cow was classified as having a spontaneous unilateral case of polydactyly with an extra digit along the medial digit of the right front limb and the heifer was classified as having bilateral polydactyly because both front limbs exhibited an extra digit along the medial digit. Radiographic examination confirmed bilateral status of the heifer and revealed bilateral status of the cow. The front feet of the cow and heifer had extra bone formation consistent with an extra digit along the medial digit. Neither animal suffered from limited mobility to date or required hoof treatments. The cow produced a second calf from a different sire, a bull calf that did not appear polydactylous per external examination and was not examined radiographically. The two polydactylous animals will remain in the breeding herd to produce more study calves unless their fitness becomes compromised. Genetic aspects of the cases are discussed.http://dx.doi.org/10.1155/2020/6407847 |
| spellingShingle | Richard Browning Jr. Emily G. Hayes Andrea S. Lear Spontaneous Appearance and Transmission of Polydactyly in Dexter Cattle Case Reports in Veterinary Medicine |
| title | Spontaneous Appearance and Transmission of Polydactyly in Dexter Cattle |
| title_full | Spontaneous Appearance and Transmission of Polydactyly in Dexter Cattle |
| title_fullStr | Spontaneous Appearance and Transmission of Polydactyly in Dexter Cattle |
| title_full_unstemmed | Spontaneous Appearance and Transmission of Polydactyly in Dexter Cattle |
| title_short | Spontaneous Appearance and Transmission of Polydactyly in Dexter Cattle |
| title_sort | spontaneous appearance and transmission of polydactyly in dexter cattle |
| url | http://dx.doi.org/10.1155/2020/6407847 |
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