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analysis of the electrical conductivity in milking fractions as a mean for detectin and characterizing mastitis in goats

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analysis of the electrical conductivity in milking fractions as a mean for detectin and characterizing mastitis in goats

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dc.contributor.author Romero, Gema es_ES
dc.contributor.author Pantoja, Jose Carlos es_ES
dc.contributor.author Sendra, Esther es_ES
dc.contributor.author Peris Ribera, Cristófol Josep es_ES
dc.contributor.author Díaz, J.R. es_ES
dc.date.accessioned 2017-05-11T11:40:19Z
dc.date.available 2017-05-11T11:40:19Z
dc.date.issued 2012-10
dc.identifier.issn 0921-4488
dc.identifier.uri http://hdl.handle.net/10251/80989
dc.description.abstract [EN] The aim of the work was to study the effect of milking fraction on electrical conductivity of milk (EC) to improve its use in dairy goat mastitis detection using automatic EC measurements during milking. The experiment was carried out on a group of 84 Murciano-Granadina goats (28 primiparous and 56 multiparous). Goats were in the fourth month of lactation. A linear mixed model was used to analyse the relationship between EC or somatic cell count (SCC) of gland milk and parity, mammary gland health status, analysed fraction (first 100 mL=F-1; machine milk=F-2; and stripping milk=F-3) and their first order interactions. Additionally, the mastitis detection characteristics (sensitivity, specificity, positive predictive value and negative predictive value) of SCC and EC were studied at different thresholds. All factors considered were significant for EC and SCC. EC decreased significantly as milking progressed (from F-1 to F-3) in both healthy and infected glands. EC was not significantly different between healthy and infected glands in F-1 and F-2 fractions, but EC of healthy glands (5.01 mS/cm) was significantly lower than in infected glands (5.03 mS/cm) at F-3. Mastitis detection characteristics of EC did not differ amongst studied fractions. The small significant difference of EC between healthy and infected glands obtained in F-3 fraction did not yield better sensitivity results compared to F-1 and F-2. The best EC mastitis detection characteristics were obtained at 5.20 mS/cm threshold (sensitivity of 70% and specificity of 50%). The best SCC mastitis detection characteristics were obtained at 300,000 cells/mL threshold and F-3 fraction (sensitivity of 85% and specificity of 65%). It was concluded that mastitis detection characteristics of EC were similar in the three milking fractions analysed, being slightly better for SCC in F-3 fraction. As shown in previous studies, there are no factors other than the mammary gland health status that affect milk EC and should be considered in the algorithms for mastitis detection to improve the results. (C) 2012 Elsevier B.V. All rights reserved. es_ES
dc.description.sponsorship The study was supported by project AGL2006-06909 (Ministerio de Educacion y Ciencia of Spain and FEDER). en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Ministerio de Educación y Ciencia, Spain [AGL2006-06909] es_ES
dc.relation.ispartof Small Ruminant Research es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Goat es_ES
dc.subject Milking fraction es_ES
dc.subject Electrical conductivity es_ES
dc.subject Mastitis es_ES
dc.subject Somatic cell count es_ES
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.title analysis of the electrical conductivity in milking fractions as a mean for detectin and characterizing mastitis in goats es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.smallrumres.2012.05.001
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Ciencia y Tecnología Animal - Institut de Ciència i Tecnologia Animal es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería Agronómica y del Medio Natural - Escola Tècnica Superior d'Enginyeria Agronòmica i del Medi Natural es_ES
dc.description.bibliographicCitation Romero, G.; Pantoja, JC.; Sendra, E.; Peris Ribera, CJ.; Díaz, J. (2012). analysis of the electrical conductivity in milking fractions as a mean for detectin and characterizing mastitis in goats. Small Ruminant Research. 107(2-3):157-163. doi:10.1016/j.smallrumres.2012.05.001 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.smallrumres.2012.05.001 es_ES
dc.description.upvformatpinicio 157 es_ES
dc.description.upvformatpfin 163 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 107 es_ES
dc.description.issue 2-3 es_ES
dc.relation.senia 243396 es_ES


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