Corrigendum: Individual behavior tracking of heifers by using object detection algorithm YOLOv4

Sarah Jahn^1*Gabriel Schmidt²Lisa Bachmann²Robert Kammerer³Helen Louton⁴Anne Schütz¹Timo Homeier-Bachmann^1*

• ¹Institute of Epidemiology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
• ²Animal Health Management, Faculty of Agriculture and Food Science, University of Applied Science Neubrandenburg, Neubrandenburg, Germany
• ³Institute of Immunology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
• ⁴Animal Health and Animal Welfare, Faculty of Agricultural and Environmental Science, University of Rostock, Rostock, Mecklenburg-Vorpommern, Germany

Incorrect AffiliationIn the published article, there was an error in affiliation(s) [3]. Instead of “[3Animal Health and Animal Welfare, Faculty of Agricultural and Environmental Science, University of Rostock, Rostock, Germany]”, it should be “[4Animal Health and Animal Welfare, Faculty of Agricultural and Environmental Science, University of Rostock, Rostock, Germany]”. The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.Additional Affiliation(s)In the published article, there was an error regarding the affiliation(s) for [Robert Kammerer]. As well as having affiliation(s) [3], they should also have [Institute of Immunology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany].The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.Error in Author ListPlease also check that the initials used in the Author Contributions section or elsewhere in the article are correct. In the published article, there was an error in the author list, and author Robert Kammerer was erroneously excluded. The corrected author list appears below.Sarah Jahn1*, Gabriel Schmidt2, Lisa Bachmann2, Robert Kammerer3, Helen Louton4, Anne K. Schütz1† and Timo Homeier-Bachmann1*†The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.Error in Figure/TableIn the published article, there was an error in Figure 2 as published. Pictures with a clearer description over the functionality of the model were chosen. The corrected Figure 2 and its caption **[ Heifers were detected and located by coat pattern using the individual detector. (A) All heifers were detected while feeding, although the metal rod above the feeding fence covered parts of the heifers' bodies. (B) All heifers were detected with a precision of 100%.] appear below. Incorrect Funding In the published article, there was an error in the Funding statement. Due to the additional author, further information must be added to the funding. The correct Funding statement appears below.FUNDINGThe author(s) declare financial support was received for the research, authorship, and/or publication of this article. This study is part of the project “Innovations for healthy and ‘happy’ cows” (IGG). The project is funded by the German Federal Ministry of Food and Agriculture (BMEL) based on a decision by the Parliament of the Federal Republic of Germany, granted by the Federal Office for Agriculture and Food (BLE; grant number: 28N303901). The study was supported by the German Ministry of Economic Cooperation and Development (Contract no. 81170269; Project No.13.1432.7-001.00) and the German Research Foundation (Project number 521734223) to RK.The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.Text CorrectionIn the published article, there was an error. We have another important information to add.A correction has been made to Material and methods, Experimental setup, 2.1. This sentence previously stated:“Heifers were infected with mycoplasma (Mycoplasma mycoides) (Hänske et al., 2023).”The corrected sentence appears below:“Heifers were infected with mycoplasma (Mycoplasma mycoides) (Hänske et al., 2023). Therefore, for biosafety reasons, the experiment was carried out in the biosafety level 2 animal facility at the FLI.”The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.Text CorrectionIn the published article, there was an error. We have to correct a sentence.A correction has been made to Material and methods, Experimental setup, 2.1. This sentence previously stated:“All heifers were clinically unremarkable during the entire duration of the experiment.”The corrected sentence appears below:“No obvious clinical symptoms were recognizable in the video material used.”The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.Text CorrectionIn the published article, there was an error. We have to add a sentence.A correction has been made to Acknoledgments. This sentence previously stated:“We thank the animal attendants of the Friedrich-Loeffler-Institut for taking care of the heifers and providing further help in organizing the experiments. We would also like to thank Hülya Öz for her helpful comments during the final writing process.”The corrected sentence appears below:“We thank Jana Hänske, Martin Heller and Joerg Jores for their contribution to the animal experiment. We thank the animal attendants of the Friedrich-Loeffler-Institut for taking care of the heifers and providing further help in organizing the experiments. We would also like to thank Hülya Öz for her helpful comments during the final writing process.”The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.