Finishing feedlot lambs in enriched pens using feeder ramps and straw and its influence on behavior and physiological welfare indicators

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dc.audience researchers es_MX
dc.contributor.author Genaro Miranda-de la Lama, 0000-0002-6848-1010
dc.contributor.author Lorena Aguayo Ulloa, 0000-0002-3825-9515
dc.contributor.author Morris Villarroel, 0000-0003-2542-3985
dc.contributor.author Maria Pascual Alonso, 0000-0001-7012-2095
dc.contributor.other María, Gustavo A.
dc.coverage MX es_MX
dc.date.accessioned 2018-06-29T01:36:33Z
dc.date.available 2018-06-29T01:36:33Z
dc.date.issued 2014
dc.description Sixty lambs were placed in enriched (EE) or conventional (CO) pens (3 pens per treatment or 10 lambs per pen), in which the EE pens had a wooden platform with ramps giving access to a concentrate hopper, straw as bedding and forage, and a further ramp for play. The CO pen was barren without any enrichment. The general behavior of the lambs and the use of space were similar for both treatments; however, CO lambs developed significantly more stereotypies (P ≤ 0.05). The EE lambs resolved a T-maze more quickly (P ≤ 0.05), and their physiological adaptation response to the feedlot environment was more efficient. The CO lambs mobilized more body reserves and had lower levels of immunity (i.e., increased nonesterified fatty acid and neutrophil/lymphocyte ratio, respectively, P ≤ 0.05) than EE lambs at the end of the fattening period, which indicates chronic stress, probably associated with the barren environment. The EE lambs had a higher (P ≤ 0.05) average daily gain, heavier carcasses and higher fattening scores, as well as lower pHult. This study shows that enrichment can improve the welfare of feedlot lambs by reducing stereotypies and enhancing the physiological adaptation response to a novel environment. es_MX
dc.format application/pdf es_MX
dc.identificador.materia 6 es_MX
dc.identifier.uri http://hdl.handle.net/20.500.12222/190
dc.language eng es_MX
dc.publisher Universidad Autónoma Metropolitana. Unidad Lerma es_MX
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 Internacional *
dc.rights.license info:eu-repo/semantics/openAccess es_MX
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ es_MX
dc.subject CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA es_MX
dc.subject.keywords Enriquecimiento ambiental de corderos es_MX
dc.subject.keywords Comportamiento de corderos es_MX
dc.subject.keywords Bienestar animal es_MX
dc.subject.keywords Full environmental enrichment es_MX
dc.subject.keywords Finishing lambs es_MX
dc.subject.keywords Animal welfare es_MX
dc.title Finishing feedlot lambs in enriched pens using feeder ramps and straw and its influence on behavior and physiological welfare indicators es_MX
dc.type preprint es_MX
dc.type.version info:eu-repo/semantics/publishedVersion es_MX
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