Efecto de distintos estímulos sonoros sobre la eyección láctea en bovinos.
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2018-12
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Universidad EARTH
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En el presente ensayo se subyugaron a 10 vacas ante dos estímulos sonoros y ante la ausencia del mismo. Los tratamientos fueron: un sonido de 432 Hz con tempo nulo, (T1), otro con una compilación de música de frecuencias variables con tempo de 100 BPM, (T2), y el control que no incurrió en la generación de sonidos artificiales, (T0). Se evaluó el efecto de los tratamientos sobre la eyección láctea y posteriormente su correlación con el cortisol, hormona relacionada al estrés y a la eyección láctea. Según la hipótesis, entre menor el tempo y la frecuencia, mayor eyección láctea y menores niveles de estrés (cuantificado a través de cortisol en leche). Los niveles más altos de eyección láctea se encontraron con el sonido de frecuencia variable y tempo de 100 BPM (aumento de 23.58 % respecto al testigo). De igual manera, los niveles más bajos de cortisol se identificaron bajo ese mismo estímulo (disminución de 10.75 % respecto al testigo).
In the present trial, 10 cows were subjected to two sound stimuli and to the absence of a stimulus. The treatments were: a 432 Hz sound with null tempo, another with a compilation of music of variable frequencies with a tempo of 100 BPM and the control that did not incur in the generation of artificial sounds. The parameters evaluated were the effect of the treatments on the milk ejection and subsequently its correlation with cortisol, a hormone related to stress and milk ejection. According to the hypothesis, the lower the tempo and the frequency, the higher the milk ejection and the lower stress levels (quantified through cortisol in milk). The highest levels of milk ejection were found with the sound of variable frequency and tempo of 100 BPM (23.58 % increase compared to the control). Similarly, the lowest levels of cortisol were identified under that same stimulus (10.75 % decrease compared to the control).
In the present trial, 10 cows were subjected to two sound stimuli and to the absence of a stimulus. The treatments were: a 432 Hz sound with null tempo, another with a compilation of music of variable frequencies with a tempo of 100 BPM and the control that did not incur in the generation of artificial sounds. The parameters evaluated were the effect of the treatments on the milk ejection and subsequently its correlation with cortisol, a hormone related to stress and milk ejection. According to the hypothesis, the lower the tempo and the frequency, the higher the milk ejection and the lower stress levels (quantified through cortisol in milk). The highest levels of milk ejection were found with the sound of variable frequency and tempo of 100 BPM (23.58 % increase compared to the control). Similarly, the lowest levels of cortisol were identified under that same stimulus (10.75 % decrease compared to the control).
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GANADO BOVINO, EYECCION DE LECHE, SECRECION, ESTIMULO, SONIDOS