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Efficiency of chemical preservatives used in raw milk samples for bacterial counts by flow cytometry

Folchini, Jéssica Aneris; Silveira, Diógenes Cecchin; Posser, Graziele Ferreira; Rebesquini, Renata; Bressiani, Joseane; Barreto, Guilherme Bortolini; Pasqualotti, Adriano; Bondan, Carlos.
Rev. bras. zootec; 52: e20220058, 2023. tab
Artigo em Inglês | VETINDEX | ID: biblio-1436774


The objective of this study was to evaluate and compare two chemical preservatives in terms of their sample preservation capabilities, considering the individual bacterial count (IBC) and time and temperature variables. Samples were collected in expansion tanks in three commercial dairy farms located in the northwest of Rio Grande do Sul, characterized as G1: low IBC values, G2: average IBC values, and G3: high IBC values. The tanks were stored at three different temperatures (4, 10, and 25 °C) for 14 d. Samples supplemented with the preservative Azilat in G1 (lower IBC group) exhibited the best results at a temperature of 4 °C, whereas for G2 and G3, the results showed no statistically significant difference between temperatures 4 and 10 °C. The temperature 25 °C exhibited the worst results. For samples preserved with Azidiol, regardless of the studied group (G1, G2, and G3), the temperatures of 4 and 10 °C did not present a significant difference regarding the preservation of the samples, with the temperature of 25 °C exhibiting the worst results. Azilat was effective in keeping the samples conserved when they presented low IBC, being able to fluctuate with the increase in IBC and temperature variation. Azidiol was effective regardless of the initial IBC level.
Biblioteca responsável: BR68.1
Localização: BR68.1