Zoonotic and Qualitative Aspects of Raw Meat-Based Diets for Dogs in The Netherlands: A Follow-Up Study

Background: The Dutch branch organization for pet products promised the public that it will improve the quality of raw meat-based diets (RMBDs) for dogs after several diagnoses of tuberculosis, brucellosis, and hyperthyroidism in dogs fed RMBDs. Objective: The objective of this study was to re-evalu...

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Main Authors: Ronald Jan Corbee, Patrick van Hoorn, Paul A. M. Overgaauw
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Pets
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Online Access:https://www.mdpi.com/2813-9372/2/1/4
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author Ronald Jan Corbee
Patrick van Hoorn
Paul A. M. Overgaauw
author_facet Ronald Jan Corbee
Patrick van Hoorn
Paul A. M. Overgaauw
author_sort Ronald Jan Corbee
collection DOAJ
description Background: The Dutch branch organization for pet products promised the public that it will improve the quality of raw meat-based diets (RMBDs) for dogs after several diagnoses of tuberculosis, brucellosis, and hyperthyroidism in dogs fed RMBDs. Objective: The objective of this study was to re-evaluate the risk factors of commercially available raw meat diets for dogs in The Netherlands. Methods: Seven commercial brands of RMBDs that were previously investigated were re-tested, as well as a newly introduced high-pressure processing (HPP) product. Raw beef sausage for humans was included for comparison. In total, 40 animal RMBDs (five batches per product) were tested for the presence of colony-forming units (CFUs), <i>Salmonella</i> spp., and <i>Escherichia coli</i> directly after defrosting and 4 h later, as well as thyroid hormone. <i>Results</i>: Exceeded EU standards for CFUs and <i>Salmonella</i> bacteria were present in several samples. In the HPP product, bacteria were still present; however, the counts were lower. There were no differences in CFUs directly after defrosting and 4 h later. The human raw meat product was negative for bacteria. Thyroid hormone could be detected in 20 out of 37 samples. In seven of these samples, the levels were >0.75 µg/g, which have been associated with hyperthyroidism. Conclusions: The hygiene (including the use of HPP production) and accurate removal of thyroid tissue during the production of RMBDs still need attention to prevent the presence of zoonotic bacteria, high CFUs, and diet-induced hyperthyroidism.
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spelling doaj-art-8b8ce9a87a0b4fd786d79e20abcdea3d2025-08-20T01:48:53ZengMDPI AGPets2813-93722025-01-0121410.3390/pets2010004Zoonotic and Qualitative Aspects of Raw Meat-Based Diets for Dogs in The Netherlands: A Follow-Up StudyRonald Jan Corbee0Patrick van Hoorn1Paul A. M. Overgaauw2Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, 3584 CM Utrecht, The NetherlandsDepartment of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, 3584 CM Utrecht, The NetherlandsDepartment Population Health Sciences, Division of Veterinary Public Health, Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80178, 3508 TD Utrecht, The NetherlandsBackground: The Dutch branch organization for pet products promised the public that it will improve the quality of raw meat-based diets (RMBDs) for dogs after several diagnoses of tuberculosis, brucellosis, and hyperthyroidism in dogs fed RMBDs. Objective: The objective of this study was to re-evaluate the risk factors of commercially available raw meat diets for dogs in The Netherlands. Methods: Seven commercial brands of RMBDs that were previously investigated were re-tested, as well as a newly introduced high-pressure processing (HPP) product. Raw beef sausage for humans was included for comparison. In total, 40 animal RMBDs (five batches per product) were tested for the presence of colony-forming units (CFUs), <i>Salmonella</i> spp., and <i>Escherichia coli</i> directly after defrosting and 4 h later, as well as thyroid hormone. <i>Results</i>: Exceeded EU standards for CFUs and <i>Salmonella</i> bacteria were present in several samples. In the HPP product, bacteria were still present; however, the counts were lower. There were no differences in CFUs directly after defrosting and 4 h later. The human raw meat product was negative for bacteria. Thyroid hormone could be detected in 20 out of 37 samples. In seven of these samples, the levels were >0.75 µg/g, which have been associated with hyperthyroidism. Conclusions: The hygiene (including the use of HPP production) and accurate removal of thyroid tissue during the production of RMBDs still need attention to prevent the presence of zoonotic bacteria, high CFUs, and diet-induced hyperthyroidism.https://www.mdpi.com/2813-9372/2/1/4BARFRMBD<i>E. coli</i><i>Salmonella</i> spp.CFUthyroid hormone
spellingShingle Ronald Jan Corbee
Patrick van Hoorn
Paul A. M. Overgaauw
Zoonotic and Qualitative Aspects of Raw Meat-Based Diets for Dogs in The Netherlands: A Follow-Up Study
Pets
BARF
RMBD
<i>E. coli</i>
<i>Salmonella</i> spp.
CFU
thyroid hormone
title Zoonotic and Qualitative Aspects of Raw Meat-Based Diets for Dogs in The Netherlands: A Follow-Up Study
title_full Zoonotic and Qualitative Aspects of Raw Meat-Based Diets for Dogs in The Netherlands: A Follow-Up Study
title_fullStr Zoonotic and Qualitative Aspects of Raw Meat-Based Diets for Dogs in The Netherlands: A Follow-Up Study
title_full_unstemmed Zoonotic and Qualitative Aspects of Raw Meat-Based Diets for Dogs in The Netherlands: A Follow-Up Study
title_short Zoonotic and Qualitative Aspects of Raw Meat-Based Diets for Dogs in The Netherlands: A Follow-Up Study
title_sort zoonotic and qualitative aspects of raw meat based diets for dogs in the netherlands a follow up study
topic BARF
RMBD
<i>E. coli</i>
<i>Salmonella</i> spp.
CFU
thyroid hormone
url https://www.mdpi.com/2813-9372/2/1/4
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