The purpose of this work was to carry out the diagnosis of 20 dairy cattle properties in system of family economy, aiming the characterization of productive factors and their associations the aspects related to the quality of milk. All properties are located in the micro-region of Alto Rio Grande, southern Minas Gerais. The data were collected from a semi-structured form, containing 97 questions, in the period from March to June 2016. After collection, the data were registered in Sphinx software®. The parameters used to assess the quality of milk were the somatic cell count (SCC), total bacterial count (CBT), protein and fat. The existence of association between the dependent factors (CCS, CBT, protein and fat) and independent (the remaining questions of the form) has been verified using two types of test: Student's t-test, when the independent variable was qualitative; and the Pearson correlation coefficient or Spearman, when the independent variable was quantitative. No statistics differences were found (P > 0.05) in the medium of CCS, CBT, protein and fat between the categories of independent qualitative variables. Significant correlations were observed between time in the dairy activity and fat (p = 0.019; r = -0.547) and between CBT and temperature (P = 0.000; r = 0.853). Some factors observed during the survey, as high CCS and CBT, demonstrate the need for improved management within the properties analyzed so that they can meet the quality requirements of Normative 62.
Resumo. Os alimentadores automáticos de bezerras, que foram criados em 1980 na Alemanha, vêm ganhando mais espaço recentemente. São equipamentos que automatizam o processo de fornecimento de leite e concentrado possibilitando maior precisão no controle do consumo individual de alimento líquido e sólido. Objetivou-se, com esta revisão da literatura, reunir informações que esclareçam o funcionamento dessa tecnologia e discutir as suas vantagens e limitações, bem como apresentar resultados de pesquisas sobre o tema, visando auxiliar técnicos e pecuaristas no processo de tomada de decisão sobre a adoção, ou não, da tecnologia. Concluiu-se que os alimentadores automáticos apresentam muitas vantagens tais como: economia com mão de obra, redução do custo alimentar e redução da idade ao desaleitamento com melhor manutenção do peso corporal. No entanto, eles apresentam algumas limitações que precisam ser consideradas como: possibilidade de maior facilidade de transmissão de doenças, em função do sistema de criação ter que ser coletivo, e a necessidade de possuir instalações para que as bezerras fiquem nos primeiros cinco dias de vida. Também é importante ressaltar que, para o sucesso de sua implantação é fundamental uma rotina de análise dos dados gerados pelo equipamento, limpeza criteriosa das instalações e boa observação das bezerras.
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