Caracterización de indicadores productivos de los terneros de la raza maremmana en el centro genético de Alberese, Italia, durante 32 años (1982-2013)

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dc.catalogadoryvc
dc.contributor.advisorLarraín Prieto, Rafael
dc.contributor.authorSilva Pérez, Juan Eduardo
dc.contributor.otherPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
dc.date.accessioned2024-05-20T14:13:12Z
dc.date.available2024-05-20T14:13:12Z
dc.date.issued2024
dc.descriptionTesis (Magíster en Sistemas de Producción Animal)--Pontificia Universidad Católica de Chile, 2024
dc.description.abstractThis study examines productive indicators of Maremmana breed calves at the Alberese genetic center in Italy, over 32 years (1982-2013). In response to the challenges of climate change and risks to native breeds, were analyzed indicators such as average Birth Weight (BWp), average Weaning Weight (WWp), Weaning Weight adjusted to 205 days (WW205), Total Weaning Weight (TWW), Average Daily Weight Gain (ADGp), the Male and Female ratio (M/F), and the percentage of Twins (%T) were analyzed. The effect of variables such as y(Y), Birth Date (BD), Weaning Date (WD), First Calving Date (FCD), and Last Calving Date (LCD) on these indicators was evaluated over the analyzed period. With 3,313 calves born, means, medians, standard deviations, and minimum and maximum values were analyzed, using SAS/STAT 9.4 for linear regression statistical analysis. The findings show a reduction in BWp, and increases in AWW, WW205, ADGp, and TWW, the latter due to more animals weaned; the M/F ratio was maintained, and a significant increase in the %T was found. When analyzing the data in relation to the breed average, the indicators within the expected range for the breed include BWp, M/F, and %T, while the ADGp was below average and the WWp was above. The most relevant variables for the model were Y, LCD, BD, WD, and FCD in decreasing order, indicating adaptations and the influence of management on productivity and genetic conservation in the face of environmental changes.
dc.fechaingreso.objetodigital2024-05-20
dc.format.extent39 páginas
dc.fuente.origenAutoarchivo
dc.identifier.doi10.7764/tesisUC/AGR/85707
dc.identifier.urihttps://doi.org/10.7764/tesisUC/AGR/85707
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/85707
dc.information.autorucFacultad de Agronomía e Ingeniería Forestal ; Larraín Prieto, Rafael ; S/I ; 95090
dc.information.autorucFacultad de Agronomía e Ingeniería Forestal ; Silva Pérez, Juan Eduardo ; S/I ; 1160702
dc.language.isoes
dc.nota.accesocontenido completo
dc.rightsacceso abierto
dc.subjectMaremmana breed
dc.subjectClimate change
dc.subjectProductive indicators
dc.subjectWeaning weight
dc.subjectTwins
dc.subjectAverage daily gain
dc.subjectAlberese
dc.subject.ddc600
dc.subject.deweyTecnologíaes_ES
dc.subject.ods03 Good health and wellbeing
dc.subject.odspa03 Salud y bienestar
dc.titleCaracterización de indicadores productivos de los terneros de la raza maremmana en el centro genético de Alberese, Italia, durante 32 años (1982-2013)
dc.typetesis de maestría
sipa.codpersvinculados95090
sipa.codpersvinculados1160702
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