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3. Welfare Assessment in Calves Fattened According to the “Outdoor Veal Calf” Concept and in Conventional Veal Fattening Operations in Switzerland

Author

Moser, Lara, Becker, Jens, Schüpbach-Regula, Gertraud, Kiener, Sarah, Grieder, Sereina, Keil, Nina, Hillmann, Edna, Steiner, Adrian, Meylan, Mireille, Moser, Lara, Becker, Jens, Schüpbach-Regula, Gertraud, Kiener, Sarah, Grieder, Sereina, Keil, Nina, Hillmann, Edna, Steiner, Adrian, and Meylan, Mireille

Abstract

Antimicrobial use in humans and animals leads to the selection of resistant bacteria, a serious threat to human and animal health, as such bacteria can lead to treatment failure and death. With the “outdoor veal calf” concept, a novel calf fattening system was developed that allows for reducing antimicrobial use by 80% through improvements in management and housing, such as health check before purchase, short transport, vaccination, quarantine in individual hutches, and fattening in small groups in a roofed, straw-bedded paddock with a group hutch for shelter. In that system, veal calves spend their entire lives outdoors in the fresh air. In our study, we wanted to make sure that the observed reduction in antimicrobial treatments was not achieved at the cost of animal welfare, i.e., that sick animals were not left without treatment in order to obtain better figures for treatment reduction. Our results show that calves in the “outdoor veal calf” system had fewer signs of respiratory and digestive diseases than control calves and that their lungs had fewer lesions of pneumonia than controls after slaughter. Thus, not only was antimicrobial use drastically reduced, but calf health was really improved in the new “outdoor veal calf” system., Peer Reviewed

Published
2020

5. Welfare Assessment in Calves Fattened According to the 'Outdoor Veal Calf' Concept and in Conventional Veal Fattening Operations in Switzerland

Author

Moser, Lara, Becker, Jens, Schüpbach-Regula, Gertraud, Kiener, Sarah, Grieder, Sereina, Keil, Nina, Hillmann, Edna, Steiner, Adrian, and Meylan, Mireille

Subjects
2. Zero hunger, 630 Agriculture, 590 Animals (Zoology), 610 Medicine & health, 3. Good health
Abstract

The "outdoor veal calf" system was developed to encounter the demand for a veal fattening system that allows for reducing antimicrobial use without impairing animal welfare. Management improvements including direct purchase, short transportation, vaccination, three-week quarantine in individual hutches, and open-air housing in small groups in a roofed, straw-bedded paddock with a group hutch were implemented in a prospective intervention study (1905 calves, 19 intervention and 19 control farms, over one year): antimicrobial use was five times lower in "outdoor veal" farms compared to control farms (p < 0.001), but it was crucial to ensure that antimicrobial treatment reduction was not associated with decreased animal welfare, i.e., that sick animals were not left untreated. Welfare was assessed monthly on the farms, and organs of 339 calves were examined after slaughter. Cough and nasal discharge were observed significantly (p ≤ 0.05) less often in intervention than in control farms, mortality (3.1% vs. 6.3%, p = 0.020) and lung lesion prevalence (26% vs. 46%, p < 0.001) were lower; no group difference was seen in abomasal lesion prevalence (65% vs. 72%). Thus, besides reduced antimicrobial use, calf health and welfare were improved in "outdoor veal calf" farms in comparison to traditional operations.

6. Welfare assessment in calves fattened according to the 'outdoor veal calf' concept and in conventional veal fattening operations in switzerland

Author

Moser, Lara, Becker, Jens, Schüpbach-Regula, Gertraud, Kiener, Sarah, Grieder, Sereina, Keil, Nina, Hillmann, Edna, Steiner, Adrian, and Meylan, Mireille

Subjects
2. Zero hunger, veal industry, pneumonia, abomasal ulcers, antimicrobial use, treatment incidence, housing, 3. Good health, animal welfare
Abstract

The “outdoor veal calf” system was developed to encounter the demand for a veal fattening system that allows for reducing antimicrobial use without impairing animal welfare. Management improvements including direct purchase, short transportation, vaccination, three-week quarantine in individual hutches, and open-air housing in small groups in a roofed, straw-bedded paddock with a group hutch were implemented in a prospective intervention study (1905 calves, 19 intervention and 19 control farms, over one year): antimicrobial use was five times lower in "outdoor veal" farms compared to control farms (p < 0.001), but it was crucial to ensure that antimicrobial treatment reduction was not associated with decreased animal welfare, i.e., that sick animals were not left untreated. Welfare was assessed monthly on the farms, and organs of 339 calves were examined after slaughter. Cough and nasal discharge were observed significantly (p ≤ 0.05) less often in intervention than in control farms, mortality (3.1% vs. 6.3%, p = 0.020) and lung lesion prevalence (26% vs. 46%, p < 0.001) were lower; no group difference was seen in abomasal lesion prevalence (65% vs. 72%). Thus, besides reduced antimicrobial use, calf health and welfare were improved in "outdoor veal calf" farms in comparison to traditional operations., Animals, 10 (10), ISSN:2076-2615

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