Instrução Normativa 51: adequação do leite cru em três mesorregiões de Minas Gerais

Abstract

The aim of this study was to diagnose the situation of quality (SCC and TBC) refrigerated raw milk tank suppliers Agricultural Cooperative Upper Rio Grande Ltda - Lavras - MG, and fitness for Instruction 51. We used the results of refrigerated raw milk samples analyzed in the Laboratory Clinica do Leite in Piracicaba-SP from the Jan./2006 Dez./2010. The samples were collected once a month randomly, carriers of milk cooling tanks directly into bottles themselves, with a preservative and the other with bronopol azidiol, and sent to laboratory in cool boxes containing ice packs within 48 hours. The geometric means for SCC found were 506,000, 485,000, 440,000, 387,000 and 449,000 cél. / ML. In the 1st period of IN-51, 75% of producers with a range of CCS were above 315,000 cells / mL and 25% were above 816,000 cells / mL. In the 2nd period 75% of producers with a range of CCS were above 251,000 cells / mL and 25% were above 717,000 cells / mL. The geometric means for CBT were found to 286,000, 345,000, 481,000, 214,000 and 179,000 CFU / mL. In the 1st period of IN-51, 75% of producers were with CBT values above 170,000 CFU / mL and 25% were above 1,253,000 CFU / mL. In the 2nd period 75% of producers were with CBT values above 136,000 CFU / mL and 25% were above 842,000 CFU / mL. During the period studied the geometric means of SCC and TBC met the requirements of NI-51. There is a great variability in the analysis of SCC and TBC producers of CAARG. According to the results of the quartiles is a decreasing trend in milk SCC and TBC CAARG over the study period.