Survival Analysis of Hungarian Large White, Duroc and Pietrain Sows

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dc.contributor.authorBaginé Hunyadi, Ágnes
dc.contributor.authorKusza, Szilvia
dc.contributor.authorBalogh, Péter
dc.date.accessioned2021-06-28T10:53:08Z
dc.date.available2021-06-28T10:53:08Z
dc.date.issued2016-03-23
dc.description.abstractThe aim of the present study was to perform lifetime performance analysis in three pig breeds; Hungarian Large White (n=295), Duroc (n=76) and Pietrain (n=91) on a commercial farm using analysis of survival sows. We took into consideration the age of sows at the time of their inclusion into breeding, their age at the time of culling, time spent in production, number of mating and parities, parity percentage, intervals between litters, number and mean of piglets born alive and born dead, number of raised piglet litters, number and mean of 21 days old piglets, the weight and mean of raised litter and raise percentage. We carried out the analysis by SPSS 22.0. Single factor analysis of variants, Kaplan-Meier analysis and Cox PH model were used. The determination of the significance of risk rates differences was done by Wald chi square test. Our results showed that the average culling age were 1056 (±33.52) days for the Hungarian Large White, 735 (±73.56) days for Duroc and 818 (±71.98) days for the Pietrain. The log rank test of the survival analysis indicated a significant difference between the three tested genotypes (χ2=16.981, P<0.001), which means that the survival percentage of the individual breeds varied significantly from one another. In comparison with the Hungarian Large White genotype the Duroc genotype has a 1.6 times higher (P<0.001) culling risk while that of the genotype Pietrain was 1.36 times higher (P<0.001). Our results can be used to compare the breeds kept under the same conditions and to compare the life span of one genotype under different farming conditions. Factors that increase survival and improve the profitability of pig farming can be determined by this method.en
dc.formatapplication/pdf
dc.identifier.citationActa Agraria Debreceniensis, No. 69 (2016) , 31-36
dc.identifier.doihttps://doi.org/10.34101/actaagrar/69/1784
dc.identifier.issn2416-1640
dc.identifier.issue69
dc.identifier.jatitleActa agrar. Debr.
dc.identifier.jtitleActa Agraria Debreceniensis
dc.identifier.urihttps://hdl.handle.net/2437/315664en
dc.languageen
dc.relationhttps://ojs.lib.unideb.hu/actaagrar/article/view/1784
dc.rights.accessOpen Access
dc.subjectswineen
dc.subjectsurvival analysisen
dc.subjectKaplan-Meier analysisen
dc.subjectCox proportional hazards modelen
dc.titleSurvival Analysis of Hungarian Large White, Duroc and Pietrain Sowsen
dc.typefolyóiratcikkhu
dc.typearticleen
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