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Herd and health management factors associated with







                                                                                         clinical caseous lymphadenitis in small-holder meat goats,







                                                                                                                                                                            Northeastern Thailand








                                                                                                                                                              1
                                                                            Suteekan Thongkwow , Natchanon Poosiripinyo , Nuttapon Pongkornkumpon ,
                                                                                                                                                                                                                                                                 1
                                                                                                                                                                                                                                                                                                                                                                                    1



                                                                                                                                             Kwankate Kanistanon , Sarinya Rerkyusuke                                                                                                                              3,4*
                                                                                                                                                                                                                                 2






                                                                                                                                                                                                                         2
                                                                         1  DVM program, Faculty of Veterinary Medicine,  Division of Physiology,  Division of Livestock Medicine,
                                                                                                                                                                                                                                                                                                3



                              4 Research Group of Animal Health Technology, Faculty of  Veterinary Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand




                                                                                                                                                         *Corresponding author Email: sarinyare@kku.ac.th











                 Introduction











                  Caseous lymphadenitis (CL) is a zoonotic disease caused by the




           bacterium Corynebacteium pseudotuberculosis (1). Clinical findings





           in infected animals presenting with abscess on superficial lymph





           nodes especially on parotid,                                                                                          prescapular lymph node and




           reproductive organs such as udder and testis (Fig 1.) (2). The aim





           of this study was to investigate the herd and health management




           factors associated with clinical caseous lymphadenitis among





           herds with and without clinical CL in meat goat small holders in




           Northeastern Thailand.






                                                                                                                                                                                                                                   Fig 1. Locations of enlarged lymph nodes or abscesses in caseous



              Materials and Methods                                                                                                                                                                                         lymphadenitis cases. The enlargement of parotid (a), prescapular (b), and




                                                                                                                                                                                                                            popliteal (c) lymph nodes is observed. Infections of the reproductive organs:




                                                                                                                                                                                                                            mastitis (d) and orchitis (e). (2)





                                                  Study area &                                                                                                                                                      Questionnaires                                                                                                                                            Clinical examination



                                             Study design






                Study area (34 farms)                                                                                         General information                                                                                      Health management

                                                                                                                                                                                                                                                                                                                                                                    • History taking


                •        Chaiyaphum (23)                                                                                      • Objective of farming                                                                                   • Quarantine

                                                                                                                                                                                                                                                                                                                                                                    • Visual inspection

                •        Khon Kaen (9)                                                                                        • Time herd established                                                                                  • CL vaccine

                                                                                                                                                                                                                                                                                                                                                                    • Palpation

                •        Sakhonnakhon (1)                                                                                     • Infrastructure : fence, barn                                                                           • Presented of clinical CL in herd




                •        Udonthani (1)                                                                                        Breed and Herd size                                                                                      • Knowledge about CL




                Herd size                                                                                                     • Breed (Pure, Mixed breed)                                                                              • Mother rearing system




                • breeder < 200 goats/herd                                                                                    • Total animals (Buck/Doe ratio)                                                                         Biosecurity




                Study design                                                                                                  Herd management                                                                                          • Presence of slaughter house and live                                                                                                          Statistical analysis





                •        Presented clinical CL (19)                                                                           • Space of barn                                                                                                   livestock markets within 5 km




                •        Absented clinical CL (15)                                                                            • Feeding management                                                                                     • Sanitation : waste and carcass                                                                                             • SPSS® software (SPSS Inc,




                Duration                                                                                                      • Cleaning and maintenance                                                                               • Use of disinfectants                                                                                                                19.0.2, 2010)





                •        December 2018  to November 2019                                                                      • Grouping goat by age                                                                                   • Pest control










             Results and Discussions                                                                                                                                                                                                                                                                    Acknowledgement








                    The final multivariate logistic analysis showed that significant risk factors for clinical CL                                                                                                                                                                                              This work was financially supported by the Bureau of Academic




          were insect vectors in the barn (odds ratio: 15.262; 95%CI: 1.128-206.510) (p<0.05) and pure                                                                                                                                                                                                  Service,  Khon Kaen University,  and  Research  Group  of  Animal




          breed (odds ratio: 10.354; 95%CI: 1.070-100.203) (p<0.05).                                                                                                                                                                                                                                    Health  Technology,  Faculty  of  Veterinary  Medicine,  Khon Kaen

                                                                                                                                                                                                                                                                                                        University.  The  authors  also  would  like  to  thank  the  farmers  for
                    The results of this study are consistent with a previous study that indicated insect vectors                                                                                                                                                                                        their cooperation.




          can be vector and cause spread of CL in herds (3,4,5). Pure breed had higher risk of CL than



          mixed breed (6).                                                                                                                                                                                                                                                                              References




                    Although other factors were not significantly associated with the occurrence of CL in goat



          herds, knowledge about CL  such as cause, transmission, especially route of transmission to                                                                                                                                                                                                  1. Peel MM, Palmer GG, Atacpoole AM, Kerr TG, 1997. Human Lymphadenitis Due
                                                                                                                                                                                                                                                                                                              to Corynebacterium pseudotuberculosis: Report of Ten Cases from Australia and


                                                                                                                                                                                                                                                                                                              Review. Clin Inf Dis 24(2), 185-191.
          human, clinical signs, are important for farmers for control and prevention of CL. According                                                                                                                                                                                                 2. Thongkwow S, Poosiripinyo N, Pongkornkumpon N, Saengsakchai S, Klinkhiew


          to  this  study,  80%  of  farmers  never  know  CL  in  goat,  82%  never  know  that  it  can  cause                                                                                                                                                                                              N, Chalatan T, Kanistanon K, Lerk-u-suke S, Rerkyusuke S, 2019. Distribution and


                                                                                                                                                                                                                                                                                                              Risk Factors of Clinical Caseous Lymphadenitis in Small-Holder Goat Herds in
          zoonotic disease. Interestingly, 58% of presented CL herds did not treat clinical CL animals                                                                                                                                                                                                        Northeastern Thailand. TJVM 49(4), 343-351.




          and let it naturally break through for self cure. In case of CL natural break through, it can                                                                                                                                                                                                3. Guimarães AS, Borges F, Pauletti RB,                                                 Seyffert N, Ribeiro D, Lage AP,
                                                                                                                                                                                                                                                                                                              Heinemann M, Miyoshi A, Gouveia A, 2011. CASEOUS LYMPHADENITIS:

          contaminate environments such as equipment (fence, feeder, waterer) and transmit through                                                                                                                                                                                                            EPIDEMIOLOGY, DIAGNOSIS, AND CONTROL. IIOAB Journal 2(2), 33-43.


                                                                                                                                                                                                                                                                                                       4. Spier SJ, Leutenegger CM, Carroll SP, Loye JE, Pusterla JB, Carpenter TE, Mihalyi
          direct contact to a new animal in herds. Since CL can survive in environments such as soil,                                                                                                                                                                                                         JE, Madigan JE, 2004. Use of a real-time polymerase chain reaction-based



          barns and equipment ranging from three weeks to eight months (3,7). This study found that                                                                                                                                                                                                           fluorogenic 5' nuclease assay to evaluate insect vectors of Corynebacterium

                                                                                                                                                                                                                                                                                                              pseudotuberculosis infections in horses. Am J Vet Res, 65(6), 829-34.

          42%  of  CL  herds  had  emergence  in  new  animals  and  recurrent  infection  in  CL  infected                                                                                                                                                                                            5. Saeed MA, Alharbi KBJ, 2014. Morel's Disease and Caseous Lymphadenitis: a



          animal.                                                                                                                                                                                                                                                                                             Literature Review with Special Reference to Saudi Arabia. IOSR J Agri Vet Sci,
                                                                                                                                                                                                                                                                                                              7(5), 76-86.


                    Control  and  prevention measures  should  incorporate client  education  on  herd  health                                                                                                                                                                                         6. Shing ETV, Murugaiyah M, 2010. A retrospective study of caseous lymphadenitis
                                                                                                                                                                                                                                                                                                              cases in University Veterinary Hospital, University Putra Malaysia and selected

          management factors, including disease transmission, clinical signs, impact on animal health                                                                                                                                                                                                         farms around Selangor. Proceeding of the 5 Seminar in Veterinary Sciences; Jan 5
                                                                                                                                                                                                                                                                                                                                                                                         th

                                                                                                                                                                                                                                                                                                              – 8, 2010. Penerbit Universiti Putra Malaysia. 100.
          and production loss, and treatment.                                                                                                                                                                                                                                                          7. Garry F, 2008. Rebhun’s Disease of Dairy Cattle. 2 ed. Saunders: 704 pp.
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