Respuestas conductuales de vacas lecheras de alta producción durante el período cálido en un sistema automatizado
DOI:
https://doi.org/10.14409/fa.v21i2.12322Palavras-chave:
Tambo robot, Semi-estabulado, Cuenca lechera santafesinaResumo
Durante los meses estivales (enero y febrero), en el tambo automatizado pastoril con sistema de refrigeración del Instituto Nacional de Tecnología Agropecuaria (INTA) Rafaela, se llevó a cabo un estudio observacional con el objetivo registrar las conductas termorreguladoras en vacas lecheras de alta producción. Se seleccionaron 20 vacas multíparas para realizar el seguimiento de las conductas de echados, parados, rumia y locomoción. In sitú se registró la temperatura y la humedad para estimar el índice de temperatura y humedad. Con este índice se caracterizaron los días en severos y cálidos. Los resultados se analizaron estadísticamente con la prueba Chi-cuadrado. Se puede inferir que, a pesar de que el sistema cuenta con modificaciones ambientales (ventilación, aspersión y/o combinación), sólo el 31 y 49 % de las vacas destinaron tiempo a las conductas rumiando y echado rumiando.
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