J K Webb Ware1, J W A Larsen, P Kluver. 1. The Mackinnon Project, Faculty of Veterinary Science, University of Melbourne, 250 Princes Hwy, Werribee, Victoria 3030, Australia.
Abstract
OBJECTIVE: To assess the financial effect of programs for controlling bovine Johne's disease (BJD) in beef herds. DESIGN: A spreadsheet simulation model of a self-replacing beef herd in south-eastern Australia selling 400-kg steers at 15 months old. METHODS: The model calculated the monthly cash flow, and net present value (NPV) of cumulative cash flow, over 10 years. Four main control options were compared: (1) a base herd (no action to control the disease), (2) test and cull, and (3) partial and (4) total destocking. It was assumed that BJD was eradicated after 3 and 5 years with total and partial destocking, respectively, and not eradicated with a test and cull program. Scenarios were compared for both commercial and stud enterprises. RESULTS: If there was no discount on the sale price of cattle in commercial herds, deaths from BJD had to exceed 5% before the NPV of partial or total destocking was similar to taking no action to control the disease over a 10-year period. When cattle sales incurred a 10% discount, deaths had to exceed 1% before the destocking strategies would break even after 10 years. CONCLUSION: Control options for BJD should be carefully planned on an individual herd basis, as significant production and financial risks accompany destocking programs. Eradication will only be more profitable in the longer term, compared with living with the disease, when discounts on the sale of stock from infected herds are high. This can occur with the selling of store cattle or breeders. In stud herds, BJD will usually cause the total failure of the business.
OBJECTIVE: To assess the financial effect of programs for controlling bovineJohne's disease (BJD) in beef herds. DESIGN: A spreadsheet simulation model of a self-replacing beef herd in south-eastern Australia selling 400-kg steers at 15 months old. METHODS: The model calculated the monthly cash flow, and net present value (NPV) of cumulative cash flow, over 10 years. Four main control options were compared: (1) a base herd (no action to control the disease), (2) test and cull, and (3) partial and (4) total destocking. It was assumed that BJD was eradicated after 3 and 5 years with total and partial destocking, respectively, and not eradicated with a test and cull program. Scenarios were compared for both commercial and stud enterprises. RESULTS: If there was no discount on the sale price of cattle in commercial herds, deaths from BJD had to exceed 5% before the NPV of partial or total destocking was similar to taking no action to control the disease over a 10-year period. When cattle sales incurred a 10% discount, deaths had to exceed 1% before the destocking strategies would break even after 10 years. CONCLUSION: Control options for BJD should be carefully planned on an individual herd basis, as significant production and financial risks accompany destocking programs. Eradication will only be more profitable in the longer term, compared with living with the disease, when discounts on the sale of stock from infected herds are high. This can occur with the selling of store cattle or breeders. In stud herds, BJD will usually cause the total failure of the business.
Authors: Robert J Greenstein; Liya Su; Irene R Grant; Antonio C G Foddai; Amy Turner; Jason S Nagati; Sheldon T Brown; Judith R Stabel Journal: Gut Pathog Date: 2021-05-06 Impact factor: 4.181
Authors: Richard Whittington; Karsten Donat; Maarten F Weber; David Kelton; Søren Saxmose Nielsen; Suzanne Eisenberg; Norma Arrigoni; Ramon Juste; Jose Luis Sáez; Navneet Dhand; Annalisa Santi; Anita Michel; Herman Barkema; Petr Kralik; Polychronis Kostoulas; Lorna Citer; Frank Griffin; Rob Barwell; Maria Aparecida Scatamburlo Moreira; Iva Slana; Heike Koehler; Shoor Vir Singh; Han Sang Yoo; Gilberto Chávez-Gris; Amador Goodridge; Matjaz Ocepek; Joseba Garrido; Karen Stevenson; Mike Collins; Bernardo Alonso; Karina Cirone; Fernando Paolicchi; Lawrence Gavey; Md Tanvir Rahman; Emmanuelle de Marchin; Willem Van Praet; Cathy Bauman; Gilles Fecteau; Shawn McKenna; Miguel Salgado; Jorge Fernández-Silva; Radka Dziedzinska; Gustavo Echeverría; Jaana Seppänen; Virginie Thibault; Vala Fridriksdottir; Abdolah Derakhshandeh; Masoud Haghkhah; Luigi Ruocco; Satoko Kawaji; Eiichi Momotani; Cord Heuer; Solis Norton; Simeon Cadmus; Angelika Agdestein; Annette Kampen; Joanna Szteyn; Jenny Frössling; Ebba Schwan; George Caldow; Sam Strain; Mike Carter; Scott Wells; Musso Munyeme; Robert Wolf; Ratna Gurung; Cristobal Verdugo; Christine Fourichon; Takehisa Yamamoto; Sharada Thapaliya; Elena Di Labio; Monaya Ekgatat; Andres Gil; Alvaro Nuñez Alesandre; José Piaggio; Alejandra Suanes; Jacobus H de Waard Journal: BMC Vet Res Date: 2019-06-13 Impact factor: 2.741