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Some Factors Causing Mortality among Female Minks during the Puerperium and Lactation Periods
Några faktorer som påverkar dödligheten hos minkhonor under dräktighets- och digivingsperioderna
Acta Veterinaria Scandinavica volume 33, pages 59–69 (1992)
Abstract
The purpose of this study, in which the farm was used as the statistical unit, was to find factors affecting mink mortality under farm conditions. Mortality was hypothesised to be affected by factors including, among others, variables describing the amount (level) and variation in composition and quality of the feed. Other explanatory variables applied in the study included farm size and age. Factor analyses were performed for variables of feed composition and quality in order to condense the variable information and to facilitate the selection of explanatory variables. This report presents a preliminary regression model for female mink mortality factors describing feed level and variation, and farm size, as explanatory variables. The regression model emphasized among other factors the importance of a constant albumin quality and a constant energy level.
Sammanfattning
Avsikten med undersökningen, i vilken den enskilda minkfarmen användes som statistisk enhet, var att finna faktorer, som påverkar dödligheten hos farmade minkar. Dödligheten antogs bero av faktorer som inkluderar bland andra sådana variabler som beskriver mängden och Variationen samt kvaliteten hos fodret. Andra förklarande variabler som användes i denna undersökning var farmens storlek och åider. För att komprimera variablinformationen och för att underlätta valet av förklarande variabler för sammansättning och kvalitet användes faktoranalys. Den här rapporten presenterar en preliminär regressionsmodell för faktorer, vilka beskriver dödligheten hos minkhonor med användandet av foderhalten och dess variation samt farmstorlek som förklarande variabler. Regressionsmodellen påvisade särskilt bland andra faktorer vikten av en konstant protein kvalitet och en konstant energihalt.
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Ingo, R., Luoma, M. & Virtanen, I. Some Factors Causing Mortality among Female Minks during the Puerperium and Lactation Periods. Acta Vet Scand 33, 59–69 (1992). https://doi.org/10.1186/BF03546936
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DOI: https://doi.org/10.1186/BF03546936