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Hori K, Taniguchi T, Elpita T, Khemgaew R, Sasaki S, Gotoh Y, Yasutomi I, Misawa N. Comprehensive Analyses of the Bacterial Population in Non-Healing Claw Lesions of Dairy Cattle. Animals (Basel) 2022; 12:ani12243584. [PMID: 36552504 PMCID: PMC9774328 DOI: 10.3390/ani12243584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/07/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022] Open
Abstract
Non-healing claw lesions (NHCLs) are a newly characterized disorder affecting the deep dermis of the hoof in dairy cattle. Although NHCLs are thought to be associated with bovine digital dermatitis (BDD), their precise etiology is not yet understood. To investigate the bacterial populations present in each type of NHCL (toe necrosis: TN, non-healing white line disease: nhWLD, and a non-healing sole ulcer: nhSU), and the newly added entity non-healing verrucous-like lesions (nhVLL), 16S rRNA-based metagenomic analysis with next-generation sequencing (NGS) was employed. Twelve cases of NHCLs (3 TN, 3 nhWLD, 4 nhSU, and 2 nhVLL) were collected from five dairy farms in two prefectures in Japan. Three samples of healthy hoof dermis collected from two farms and a slaughterhouse were used as controls. Furthermore, culture-dependent and -independent approaches were conducted for detecting Treponema species and Fusobacterium necrophorum. As reported in BDD, Treponema species and F. necrophorum were detected frequently from NHCLs by PCR and immunohistochemistry, but NGS showed that these bacterial genera were not predominant in NHCLs. The predominant bacterial genera in NHCLs differed among the lesions examined, suggesting that Treponema species present predominantly in BDD were not predominant in NHCLs and that the bacterial population in NHCLs may vary among individual cattle and/or farms.
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Affiliation(s)
- Kaoru Hori
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kihara-kiyotake-cho, Miyazaki 889-1692, Japan
- Fuchu Veterinary Clinical Center, Hiroshima Agricultural Mutual Aid Association, 396-1 Fukae, Jyoge-cho, Fuchu, Hiroshima 729-3421, Japan
| | - Takako Taniguchi
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki 889-2192, Japan
| | - Trigan Elpita
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki 889-2192, Japan
| | - Rathanon Khemgaew
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kihara-kiyotake-cho, Miyazaki 889-1692, Japan
| | - Satomi Sasaki
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki 889-2192, Japan
| | - Yasuhiro Gotoh
- Department of Bacteriology, Faculty of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Ichiro Yasutomi
- Yubetsu Herd Management Service Ltd., 450-3 Baro, Mombetsu-gun, Yubetsu-cho 093-0731, Hokkaido, Japan
| | - Naoaki Misawa
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kihara-kiyotake-cho, Miyazaki 889-1692, Japan
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki 889-2192, Japan
- Correspondence: ; Tel./Fax: +81-985-58-7284
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