Avaliação da produção e qualidade do leite em propriedades no município de Porto da Folha - Sergipe

• Autor(a) principal: Santos, Keylla Acacio dos
• Data de Publicação: 2020
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFS
• Texto Completo: http://ri.ufs.br/jspui/handle/riufs/13538
• topic: Controle leiteiro; Composição do leite; Controle de mastite; Higiene de ordenha; Milk control; Milk composition; Mastitis control; Milking hygiene; CIENCIAS AGRARIAS::ZOOTECNIA

The objective was to analyze the production and quality of cows' milk from three production units in the municipality of Porto da Folha - SE, according to the parameters established in Normative Instruction 76/2018 of the Ministério da Agricultura, Pecuária e Abastecimento. Collections were carried out between August 2019 and January 2020, making a total of five collections, in each production unit (PU), which totaled 257 samples for composition analysis, somatic cell count and total bacterial milk count. Data were submitted to analysis of variance and Tukey test to compare the averages between the productive units. Milk production per cow (kg/day) was higher in UP3 (p <0.05), with an average of 19.84 kg, compared to 17.09 kg in UP1 and 17.32 kg in UP2. The fat percentage was the same in the three UPs, with an average of 3.62%, a result that meets the minimum of 3% established by IN76/2018. The values of protein concentration were different for each UP (p <0.05), with 3.25% in UP1, 2.85 in UP2 and 3.01% in UP3, minimum requirement according to IN76 is 2.9%. There was no difference for lactose (p>0.05), but all presented a minimum of 4.3%, according to IN76. The averages of somatic cell count were higher in UP3 (787.13 x 103 SC / mL) and equal in UP 1 and 2 (307.37 and 370.31 x 103 SC/mL of milk), however UP3 showed a level of SCC higher than the maximum allowed by IN76. Finally, the total bacterial count was below the maximum limit required by the IN (300 x103 CFU / mL of milk), but the three UPs were different from each other (p<0.05), whose values were 11.78; 46.80 and 65.80 (x103 CFU / mL of milk), respectively. Production unit 3 has highest production percentage of milk constituents among the properties analyzed, but with the somatic cell count higher than the maximum required by Normative Instruction 76/2018. Thus, it is concluded that production units 1 and 2 have milk better quality.