Associations of carcass weight and trimming loss with cull dairy cow health observations collected at slaughter.

Autor:	Vlemminx R; Quality Assurance and Public Affairs department, Vion, Boxtel, The Netherlands., Bouwknegt M; Quality Assurance and Public Affairs department, Vion, Boxtel, The Netherlands., Urlings B; Quality Assurance and Public Affairs department, Vion, Boxtel, The Netherlands., van Schaik G; Royal GD, Deventer, The Netherlands.; Faculty of Veterinairy Medicine, Utrecht University, Utrecht, The Netherlands.
Jazyk:	angličtina
Zdroj:	Veterinary and animal science [Vet Anim Sci] 2023 Jan 10; Vol. 19, pp. 100285. Date of Electronic Publication: 2023 Jan 10 (Print Publication: 2023).
DOI:	10.1016/j.vas.2023.100285
Abstrakt:	Cull dairy cows account for around 27 percent of total head EU beef and veal production. For the Netherlands specific, even 42 percent (European Commission, 2022). As they are primarily kept to produce milk, red meat production is an additional source of revenue for dairy farmers. Insights in postmortem health observations that are not always visible on the living animal such as heart or liver issues, bruises, adhesions and injuries on the locomotor system, may contain valuable information for farmers to increase revenue and reduce losses in red meat production from cull dairy cows. Our goal was to obtain insights in the association of postmortem health observations with carcass weight and trimming losses. Data of 592,268 slaughter cows were available for analysis and models were built to explain carcass and trimming loss by the postmortem health observations. Carcass weight is lower for younger cows (-3.2 to -84.9 kg), cows with multiple health observations (-7.4 to -34.3 kg) and specific observations for the locomotor system (-16.7 to -22.7 kg), back (-17.9 kg), hindquarter (-21.6 kg) and chest and ribs (-15.5 to -27.6 kg). Total number of health observations (+2.0 to +6.5 kg), observations on the locomotor system (+3.3 to +5.4 kg) and on the chest and ribs (+2.2 to +9.8 kg) were the main predictors for trimming loss. Carcass weight is more affected by systemic health issues and diseases prior to slaughter leading to a negative energy balance and consequently reduced carcass weight. Trimming loss is more a consequence of the focus on meat quality and food safety in the slaughter process. Better understanding of the effect of on-farm management, on health, carcass weight and trimming loss will provide new insights for farmers and veterinarians but will also give them more action perspective to improve dairy farm preventive management and reduce losses at slaughter. Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Rik Vlemminx reports a relationship with Vion Food Group that includes: employment. Martijn Bouwknegt reports a relationship with Vion Food Group that includes: employment. Bert Urlings reports a relationship with Vion Food Group that includes: employment. Gerdien van Schaik reports a relationship with Royal GD that includes: employment. (© 2023 The Author(s).)
Databáze:	MEDLINE
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