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Construction of a conceptual framework for assessment of health-related quality of life in calves with respiratory disease.
Bull, E M; Bartram, D J; Cock, B; Odeyemi, I; Main, D C J.
Afiliação
  • Bull EM; School of Agriculture, Food and the Environment, Royal Agricultural University, Cirencester, GL7 6JS, UK.
  • Bartram DJ; Outcomes Research, Zoetis, Loughlinstown, County Dublin D18 T3Y1, Ireland. Electronic address: david.bartram@zoetis.com.
  • Cock B; School of Agriculture, Food and the Environment, Royal Agricultural University, Cirencester, GL7 6JS, UK.
  • Odeyemi I; Outcomes Research, Zoetis, Loughlinstown, County Dublin D18 T3Y1, Ireland.
  • Main DCJ; School of Agriculture, Food and the Environment, Royal Agricultural University, Cirencester, GL7 6JS, UK.
Animal ; 15(4): 100191, 2021 Apr.
Article em En | MEDLINE | ID: mdl-33640293
Bovine respiratory disease (BRD) is one of the most prevalent diseases affecting beef and dairy calves worldwide, with implications for lifetime productivity, antimicrobial use and animal welfare. Our objective was to construct a conceptual framework for assessment of health-related quality of life (HRQL) in calves with respiratory disease, based on indicators suitable for direct pen-side visual observation. Health-related quality of life measures aim to evaluate the subjective experience of the animal rather than any related pathology. A conceptual framework graphically represents the concepts to be measured and the potential relationships between them. A multistage, mixed method approach involving diverse data sources, collection methods and stakeholders was applied to promote comprehensiveness, understanding and validity of findings. A scoping review was conducted to identify, characterize and collate evidence of behavioural indicators of BRD. The indicators identified were mapped against the principal attributes of five prominent animal welfare assessment frameworks to appraise their correspondence with different characterizations of the dimensions of welfare. Forty-two semi-structured, individual, qualitative interviews with a purposeful sample of experienced veterinarians and stockpersons from UK, USA and Canada elicited in-depth descriptions of the visual observations of HRQL they make in diagnosing and assessing the response to treatment of calves with BRD. Verbatim interview transcripts were examined using inductive thematic analysis. Respondents provided insights and understanding of indicators of HRQL in BRD such as interaction with feed source, hair coat condition, specific characteristics of eye appearance, eye contact, rumen fill and stretching (pandiculation). In an on-farm pilot study to assess the value of potential HRQL behavioural indicators, there was a moderate positive correlation between behaviour and clinical scores (rs = 0.59) across the 5 days preceding veterinary treatment for BRD. Interestingly, the behaviours evaluated were observed a median of 1.0 (interquartile range: 1.0-3.5) days before clinical indicators used in the scoring system. The proposed conceptual framework for assessment of HRQL features 23 putative indicators of HRQL distributed across two interrelated domains - clinical signs and behavioural expressions of emotional well-being. It has potential applications to inform the development of new HRQL measures such as structured questionnaires and automated sensor technologies.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças Respiratórias / Doenças dos Bovinos Tipo de estudo: Prognostic_studies / Qualitative_research Limite: Animals País/Região como assunto: America do norte Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças Respiratórias / Doenças dos Bovinos Tipo de estudo: Prognostic_studies / Qualitative_research Limite: Animals País/Região como assunto: America do norte Idioma: En Ano de publicação: 2021 Tipo de documento: Article