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Effect of intramammary infection on milk electrical conductivity in Murciano-Granadina goats

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Effect of intramammary infection on milk electrical conductivity in Murciano-Granadina goats

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dc.contributor.author Díaz, J. R. es_ES
dc.contributor.author Romero, Gema M. J. es_ES
dc.contributor.author Muelas Domingo, Raquel es_ES
dc.contributor.author Alejandro, M. es_ES
dc.contributor.author Peris Ribera, Cristófol Josep es_ES
dc.date.accessioned 2015-05-27T12:36:39Z
dc.date.available 2015-05-27T12:36:39Z
dc.date.issued 2012-10
dc.identifier.issn 0022-0302
dc.identifier.uri http://hdl.handle.net/10251/50871
dc.description.abstract Measurements of electrical conductivity (EC) of milk are used in mastitis detection in cows due to the low cost, possibility of automation, and rapid diagnosis, but the literature about EC measurement in goats is scarce. In this study, we studied the effect of the establishment of intramammary infection (IMI) on EC of goat milk by gland using daily measurements. Additionally, the effects on milk yield, somatic cell count (SCC), and mineral content were analyzed. Eight primiparous and 10 multiparous Murciano-Granadina goats free from IMI were included in the study. Health conditions of the participating animals were monitored for 16 d and then various unfavorable health situations that may arise on commercial farms were simulated to increase the chances of IMI. Once the IMI was confirmed, the experiment continued for another 16 d. Statistical analysis was conducted using a linear mixed model considering several periods regarding the establishment of the infection and whether it affected one or both glands in the animal. The establishment of IMI caused a significant increase of EC, SCC, and chlorides in the infected glands, whereas the sodium: potassium ratio and the ratio of EC between collateral glands showed significant increases only in bilaterally infected animals. The microorganisms that caused greater increases of EC were Staphylococcus aureus and a gram-negative bacterium. Changes due to other isolated microorganisms (coagulase-negative staphylococci and streptococci) were small. No significant differences in milk yield were determined. The significant effect of infection on EC in the affected glands suggests that the use of a system based on daily readings of EC could be useful in IMI detection of goats. 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 American Dairy Science Association es_ES
dc.relation Ministerio de Educacion y Ciencia of Spain AGL2006-06909 es_ES
dc.relation FEDER es_ES
dc.relation.ispartof Journal of Dairy Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Intramammary infection es_ES
dc.subject Goat milk es_ES
dc.subject Electrical conductivity es_ES
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.title Effect of intramammary infection on milk electrical conductivity in Murciano-Granadina goats es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.3168/jds.2011-4698
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ciencia Animal - Departament de Ciència Animal es_ES
dc.description.bibliographicCitation Díaz, JR.; Romero, GMJ.; Muelas Domingo, R.; Alejandro, M.; Peris Ribera, CJ. (2012). Effect of intramammary infection on milk electrical conductivity in Murciano-Granadina goats. Journal of Dairy Science. (95):718-726. doi:10.3168/jds.2011-4698 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.3168/jds.2011-4698 es_ES
dc.description.upvformatpinicio 718 es_ES
dc.description.upvformatpfin 726 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.issue 95 es_ES
dc.relation.senia 243391
dc.identifier.eissn 1525-3198


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