Developing of a model to predict lying behavior of dairy cows on silvopastoral system during the winter season

KT de Sousa, M Deniz, MF Moro, IC Gomes… - International Journal of …, 2021 - Springer
KT de Sousa, M Deniz, MF Moro, IC Gomes, MM do Vale, JR Dittrich
International Journal of Biometeorology, 2021Springer
Lying behavior is an important indicator of the cows' welfare and health. In this study, we
evaluate the effect of the physical environment on dairy cows' behaviors raised on a
silvopastoral system through a predictive model. There was a difference (p< 0.01) in soil
surface temperature (SST) and black globe-humidity index (BGHI) between the shaded and
sunny areas of the silvopastoral system. The BGHI was the variable most important to
classify the cows' decision to seek shaded or sunny areas, while the soil surface …
Abstract
Lying behavior is an important indicator of the cows’ welfare and health. In this study, we evaluate the effect of the physical environment on dairy cows’ behaviors raised on a silvopastoral system through a predictive model. There was a difference (p<0.01) in soil surface temperature (SST) and black globe-humidity index (BGHI) between the shaded and sunny areas of the silvopastoral system. The BGHI was the variable most important to classify the cows’ decision to seek shaded or sunny areas, while the soil surface temperature affected the choice for the area to perform the lying behaviors. In order to understand the influence of these parameters on cows’ lying behavior, we developed another predictive model relating the SST and BGHI with cows lying at shaded and sunny areas. There was significance (p<0.01) for all model parameters. The odds of cows lying increased by approximately 2% with each degree of SST. In contrast, the probability of the cows lying in the shaded areas was 35% less than in sunny areas. The model developed in this study was efficient in identifying changes in the behavior of dairy cows in relation to physical environment. The BGHI influenced the areas used by cows to performing their standing behavior, while the areas used for lying behavior were influenced by the SST.
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