HYDROGEN ION CONCENTRATION IN EWE´S MILK: INFLUENCE OF MASTITIS AND SAMPLE FREEZING

Authors

  • Maiara Garcia Blagitz Universidade de São Paulo
  • Camila Freitas Batista Universidade de São Paulo
  • Fernando Nogueira Souza Universidade de São Paulo
  • Claudia Regina Stricagnolo Univerdade de São Paulo
  • Viviani Gomes Universidade Federal do Paraná
  • Alice Maria Melville Paiva Della Libera Universidade de São Paulo

DOI:

https://doi.org/10.5216/cab.v12i1.9190

Keywords:

Animal sanity

Abstract

The measurement of pH in milk is one of the most important and frequent procedures performed in biochemistry practices. This variable is applied to the diagnosis of mammary gland disease, assessment of industrial yields, and identification of metabolic diseases. The objective of this study was to evaluate de effect of freezing the milk from healthy and infected mammary glands of Santa Ines ewes on the pH. The bacteriological culture of 183 milk samples was analyzed resulting in 146 negative and 37 positive samples. From these, the hydrogen ion concentration was determined on sampling day and after freezing at -20°C for 30 months. A reduction on pH was observed after freezing, and the bacteriological positive samples showed the highest pH values. A higher decrease of the pH after freezing was seen in positive samples. Thus, the kind of conservation of milk samples should be considered, as well as the results of parameters that could be influenced by such variation.

KEYWORDS: pH, freezing, milk, ewes.

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Author Biographies

Maiara Garcia Blagitz, Universidade de São Paulo

Pós-Graduanda

Camila Freitas Batista, Universidade de São Paulo

Pós-Graduanda

Fernando Nogueira Souza, Universidade de São Paulo

Pós-Graduando

Claudia Regina Stricagnolo, Univerdade de São Paulo

Técnica do laboratório

Viviani Gomes, Universidade Federal do Paraná

Professora Doutora

Alice Maria Melville Paiva Della Libera, Universidade de São Paulo

Professora Doutora

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Published

2011-03-31

How to Cite

BLAGITZ, M. G.; BATISTA, C. F.; SOUZA, F. N.; STRICAGNOLO, C. R.; GOMES, V.; DELLA LIBERA, A. M. M. P. HYDROGEN ION CONCENTRATION IN EWE´S MILK: INFLUENCE OF MASTITIS AND SAMPLE FREEZING. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 12, n. 1, p. 187–191, 2011. DOI: 10.5216/cab.v12i1.9190. Disponível em: https://revistas.ufg.br/vet/article/view/9190. Acesso em: 30 jun. 2024.

Issue

Vol. 12 No. 1 (2011)

Section

Nota Científica

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