Minimum space requirements for cattle: An approach based on photographic records
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Published on: April 22, 2020
Carmen Gallo1, Bárbara Tabilo1, Grisel Navarro2
1Instituto de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile.
Background:
The space requirements for accommodating cattle during confinement are based on assessment of both the physical space occupied by the animals and that needed for essential behaviours. The aim of this study was to estimate the area (m2 ) occupied by cattle of different liveweights in the static standing (ST), recumbency (SR) and sleeping (SL) postures.
Methods:
The study was conducted in Chile. The area (m2 ) occupied by 26 female beef cross cattle with liveweights between 45 and 642 kg was estimated in the ST, SR and SL postures through planimetry using overhead photographs. The allometric coefficient k value was obtained for each posture using linear regression equations from the measured weight (kg0.66 ) and area occupied.
Results:
Less but more variable space was occupied by each individual in the ST posture compared to SR or SL posture, with clear correlations between weight and occupied area. The k values obtained were 0.014 (ST), 0.023 (SR) and 0.021 (SL), which are all less than international recommendations for the same postures.
Limitations:
The methodology needs refinement to reduce the distance to the object optical effect in the different postures. Further work is also needed to determine additional space requirements for behavioural needs and movements associated with each posture and change of posture, depending on the type of confinement.
Conclusions:
We provide a scientific basis on which to objectively establish absolute minimum static space requirements for cattle of different breeds, types, weights and anatomical conformations and calculate k values.
