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Teatcups with automatic valves in machine milking of goats

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Teatcups with automatic valves in machine milking of goats

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dc.contributor.author Manzur Cruz, Alberto es_ES
dc.contributor.author Díaz, José Ramón es_ES
dc.contributor.author Fernández Martínez, Nemesio es_ES
dc.contributor.author Balasch Parisi, Sebastià es_ES
dc.contributor.author Peris Ribera, Cristófol Josep es_ES
dc.date.accessioned 2018-06-29T04:31:17Z
dc.date.available 2018-06-29T04:31:17Z
dc.date.issued 2018 es_ES
dc.identifier.issn 0022-0299 es_ES
dc.identifier.uri http://hdl.handle.net/10251/104822
dc.description.abstract [EN] This Research Paper addresses the hypothesis that using teatcups with automatic valves, without cutting off the vacuum prior to cluster removal, could increases the risk of mastitis and affect other milking variables on goats. A first trial used 46 intramammary infection (IMI)-free goats that had been milked with normal teatcups (without automatic valves) during a pre-experimental period of 8 ± 2 d postpartum. These animals were divided into two groups (n = 23), randomly assigning each group to teatcups with automatic valves (teatcups A) or without automatic valves (teatcups B) for a 20-week experimental period. During this period, several strategies were applied to increase teat exposure to pathogens in both experimental groups. In the first eight weeks of the experimental period, the new IMI rate per gland was significantly higher (P < 0·05) in the group of animals milked with teatcups A (6 of 46; 13%) than in the group milked with teatcups B (1 of 46; 2%). However, throughout the rest of the experimental period the same number of glands appeared with new IMI (n = 7) in both animal groups. SCC was higher in goats milked with teatcups A, but no significant differences were found in the remaining variables (milk production and composition, frequency of liner slips + teatcup fall-off). In a second experiment, in a crossover design (54 goats in fourth month of lactation, 2 treatments ¿ teatcups A and B ¿ in 2 experimental periods each lasting 1 week), no differences were observed in total milk, average milk flow, total milking time or teat thickness changes after milking between both teatcups. However, teatcups A worsened slightly the maximum milk flow. We concluded that the use of teatcups with automatic valves, without cutting off the vacuum prior to cluster removal, increases the risk of mastitis on goat livestock farms. es_ES
dc.language Inglés es_ES
dc.publisher Cambridge University Press es_ES
dc.relation MCYT/AGL2002-03847 es_ES
dc.relation.ispartof Journal of Dairy Research es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Milking machine es_ES
dc.subject Teatcups es_ES
dc.subject Automatic valves es_ES
dc.subject Mastitis es_ES
dc.subject Goats es_ES
dc.subject.classification ESTADISTICA E INVESTIGACION OPERATIVA es_ES
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.title Teatcups with automatic valves in machine milking of goats es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1017/S0022029917000565 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Estadística e Investigación Operativa Aplicadas y Calidad - Departament d'Estadística i Investigació Operativa Aplicades i Qualitat es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ciencia Animal - Departament de Ciència Animal es_ES
dc.description.bibliographicCitation Manzur Cruz, A.; Díaz, JR.; Fernández Martínez, N.; Balasch Parisi, S.; Peris Ribera, CJ. (2018). Teatcups with automatic valves in machine milking of goats. Journal of Dairy Research. 85(1):64-69. doi:10.1017/S0022029917000565 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/Teatcups with automatic valves in machine milking of goats es_ES
dc.description.upvformatpinicio 64 es_ES
dc.description.upvformatpfin 69 es_ES
dc.type.version info:eu repo/semantics/publishedVersion es_ES
dc.description.volume 85 es_ES
dc.description.issue 1 es_ES
dc.identifier.pmid 28934997
dc.relation.pasarela 356331 es_ES
dc.contributor.funder Ministerio de Ciencia y Tecnología (MCYT) es_ES


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