Estudo do kit somaticell comparado a microscopia direta para o diagnóstico de mastite subclínica em cabras

Abstract

The quality of milk is directly correlated with the health of the mammary gland and may also be influenced by other factors, among them mastitis, which is among the most significant factor capable of altering the physical and chemical properties of milk. The objective of this study was to evaluate the efficiency of the Somaticell kit in relation to the direct microscopy technique for the estimation of Somatic Cell Count (CCS) in goat milk. The experiment was carried out from February to May 2019, in which 138 samples of raw milk from mestizo goats were collected from 46 producers that were part of two associations of dairy goats, located in the municipalities of Gurjão-PB and Santo André-PB. Immediately after receiving the milk from each producer, three samples were collected: 46 samples for physicochemical analysis, 46 samples for analysis of CCS by the Somaticell® kit and 46 samples for analysis of CCS by the direct microscopy method. When checking the CCS averages in the goat milk, it was observed that they were discrepant, being 1,695,870 cells / mL for direct microscopy and 475,217 cells / mL for the Somaticell® kit. In addition, there was no correlation (p> 0.01) between the two methods studied. Considering the average of the physical-chemical properties of goat milk, 3.42% for protein, 5.07% for lactose, 9.30% for non-greasy solids, 13.49% for total solids, 1032, 4 g / m³ for density and -0,600 ° C for the freezing point. It is concluded that the Somaticell kit has low sensitivity for CCS in goats, which should not be used for detection of subclinical mastitis in goat females.