Body condition and dorsal fat depth determination by Renco in the ewe: effect on birth weight and colostrum quality

• Victoria Luño Universidad de Zaragoza, Departamento de Patología Animal. Zaragoza, España - Universidad de Zaragoza, Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2). Zaragoza, España
• Sofía Coscolla Universidad de Zaragoza, Departamento de Patología Animal. Zaragoza, España
• Lydia Gil Universidad de Zaragoza, Departamento de Patología Animal. Zaragoza, España - Universidad de Zaragoza, Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2). Zaragoza, España
• Felisa Martínez Universidad de Zaragoza, Departamento de Patología Animal. Zaragoza, España - Universidad de Zaragoza, Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2). Zaragoza, España

DOI: https://doi.org/10.52973/rcfcv-e34352

Keywords: Dorsal fat, body condition, ewe

Abstract

Body condition is a parameter widely used to know the reserves of the animals. This value allows the implementation of management corrections to improve the reproductive and productive efficiency of the farm. The measurements can be carried out subjectively or using other methods, such as Renco, which allow to know the fat reserves in the dorsal area of the animals. The aim of this study was to determine the relationship between body condition and backfat thickness measured with the Renco Lean–Meater®. In addition, we analyse the relationship between body condition, colostrum quality and liveweight at birth of the lambs. In this study, 37 adult ewes and their lambs were utilized. Body condition was assessed by subjective scale, back fat by Renco Lean–Meater®. Colostrum sample was taken after delivery and analyzed with a Brix refractometer. The lambs were weighed with a portable scale. In conclusion, the Renco–Lean Meater® is a good system for measuring backfat in sheep. In addition, body condition modified the liveweight of lambs at birth, but no colostrum quality.

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