Abstract
In order to determine the relative value of different immunological traits as indicators of resistance to infection, an analysis was performed based on records of immunological traits in young bulls and “health card” records of clinical mastitis in their half sisters. The correlation analysis suggested that young bulls with high levels of serum immunoglobulin have half sisters with low mastitis frequency. A significant positive correlation was found between the antibody response peak against human serum albumin and susceptibility to mastitis. The results of this analysis should not be considered conclusive as the data were limited. Further work is required on a larger body of material. The model described here may be considered for future use as it enables immediate selection of animals.
Keywords: immunology, genetic resistance, bovine mastitis
Sammendrag
En analyse for evaluering av immunkarakterer som potensielle resistensmarkører ble gjennomført på basis av følgende opplysninger: Immunologiske karakterer hos ungokser og helsekortdata over mastittfrekvenser til deres halvsøstre. Korrelasjonsanalyser tydet på at ungokser med høgt serum immunoglobin-nivå har halvsøstre med lavest mastittfrekvens. Det ble funnet en sikker positiv sammenheng mellom antistoffrespons mot human serum albumin og mastitt-tilbøyelighet. På grunn av materialets begrensning, er resultatene usikre og trenger følgelig bekreftelse ved senere forsøk. Den beskrevne modell vil sannsynligvis med fordel kunne benyttes i framtida særlig fordi den, i motsetning til andre modeller, kan avsløre interessante sammenhenger uten tidstap.
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