Ocorrência de leite instável não ácido em unidades produtoras em Afrânio, Pernambuco

Abstract

Brazil has been showing constant growth in milk production and the state of Pernambuco is the second largest milk producer in the Northeast, accounting for 22% of the milk produced in the region and 3% of Brazilian production. Milk production in the municipality of Afrânio in 2021 corresponded to 10.4 million liters with a number of 7 thousand and 200 cows milked, most of them producing dairy products. Milk intended for human consumption must meet the quality standards required by the Ministry of Agriculture, Livestock and Food Supply (MAPA), and this quality is influenced by the nutritional and health management of the animals. In this context, the objective of this work was to verify the occurrence of non-acid unstable milk in production units in Afrânio, Pernambuco. Two collections of milk samples were carried out, December/2022 and February/2023, from 29 production units, directly from the milk jugs, at the time that the producers delivered the milk to the dairy's reception platform. A test was carried out for alcohol (72%), titratable acidity, density, cryoscopy point, fat, protein, lactose, minerals and defatted dry extract. The samples were placed in sterile 100 ml flasks and stored in a thermal box with ice until the moment of analysis, keeping the temperature at 4º C. The analyzes were carried out in the microbiology laboratory of the Federal University of Vale do São Francisco (UNIVASF), Petrolina, Pernambuco. The data obtained were analyzed using descriptive statistics. According to the results, it was found that the physical-chemical standards are in accordance with the requirements of the MAPA. However, instability was observed in some milk parameters and changes in the composition of some elements, probably caused by nutritional imbalance. Thus, it was concluded that there was an occurrence of LINA in the period of low supply of quality forage, altering the composition of the milk