Somatic cell count is used as indicator of quality of milk. Most frequently an increase of SCC reflects an immune response related to intramammary infections. Plasmin-plasminogen-plasminogen activator (PL-PG-PA) is an enzymatic system activated during inflammation. The aim of this work is to evaluate PL-PG-PA system in relation to quality of milk. We determined SCC and bacterial flora on milk samples collected from 114 cows aseptically. We selected and divided samples in two groups: G1carachterized of SCC<100.000 cells/ml, absence of pathogens and G2 with SCC800.000 cells/ml. We evaluated the PL-PG-PA activity with enzymatic and colorimetric assay. The results of this study showed higher levels of PL and PA activity in G2 (P<0.001) and positive correlations between SCC vs PL and SCC vs PA (P<0.001).
Valutazione del sistema PL-PG-PA quale indicatore della qualità del latte bovino / L. Rossi, F. Galante, E. Fusi, M. Luini, V. Dell’Orto, A. Baldi. - In: ATTI DELLA SOCIETÀ ITALIANA DELLE SCIENZE VETERINARIE. - ISSN 1825-4454. - 62:(2008), pp. 439-440. ((Intervento presentato al 62. convegno Convegno nazionale tenutosi a San Benedetto del Tronto (AP) nel 2008.
Valutazione del sistema PL-PG-PA quale indicatore della qualità del latte bovino
L. Rossi;F. Galante;E. Fusi;V. Dell’Orto;A. Baldi
2008
Abstract
Somatic cell count is used as indicator of quality of milk. Most frequently an increase of SCC reflects an immune response related to intramammary infections. Plasmin-plasminogen-plasminogen activator (PL-PG-PA) is an enzymatic system activated during inflammation. The aim of this work is to evaluate PL-PG-PA system in relation to quality of milk. We determined SCC and bacterial flora on milk samples collected from 114 cows aseptically. We selected and divided samples in two groups: G1carachterized of SCC<100.000 cells/ml, absence of pathogens and G2 with SCC800.000 cells/ml. We evaluated the PL-PG-PA activity with enzymatic and colorimetric assay. The results of this study showed higher levels of PL and PA activity in G2 (P<0.001) and positive correlations between SCC vs PL and SCC vs PA (P<0.001).File | Dimensione | Formato | |
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