Effect of THI on milk coagulation properties of Holstein-Friesian dairy cattle

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Abstract

The objective of this study was to evaluate the effect of temperature-humidity index (THI) on the milk coagulation properties of Holstein-Friesian dairy cattle from northeast part of Italy. A total of 592 individual milk samples from six dairy herds were evaluated. The milk coagulation properties traits analysed were milk rennet coagulation time and curd firmness, as well as the fat, protein, and casein contents, pH, milk aptitude to coagulate (IAC), and the somatic cell count. The THI was determined during the periods of sample collection. The THI results showed that values of up to 75 did not significantly change the IAC values; however, when the THI values were above 75, the IAC decreased significantly. The control of THI can be used to guarantee appropriate milk coagulation properties.

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Beux, S., Cassandro, M., Nogueira, A., & Waszczynskyj, N. (2017). Effect of THI on milk coagulation properties of Holstein-Friesian dairy cattle. Revista Brasileira de Zootecnia, 46(5), 429–432. https://doi.org/10.1590/S1806-92902017000500009

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