Genetic Basis and Risk Factors for Infectious and Noninfectious Diseases in US Holsteins. I. Estimation of Genetic Parameters for Single Diseases and General Health

Health data collected from 1996 to 1999 from 177 herds in Minnesota and Wisconsin were analyzed to establish genetic basis for infectious and noninfectious diseases. Three types of health traits were targeted. First, available infectious conditions were used to identify animals that are superior in...

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Veröffentlicht in:Journal of dairy science 2005-03, Vol.88 (3), p.1199-1207
Hauptverfasser: Abdel-Azim, G.A., Freeman, A.E., Kehrli, M.E., Kelm, S.C., Burton, J.L., Kuck, A.L., Schnell, S.
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container_end_page 1207
container_issue 3
container_start_page 1199
container_title Journal of dairy science
container_volume 88
creator Abdel-Azim, G.A.
Freeman, A.E.
Kehrli, M.E.
Kelm, S.C.
Burton, J.L.
Kuck, A.L.
Schnell, S.
description Health data collected from 1996 to 1999 from 177 herds in Minnesota and Wisconsin were analyzed to establish genetic basis for infectious and noninfectious diseases. Three types of health traits were targeted. First, available infectious conditions were used to identify animals that are superior in their general immunity (including innate immunity) for infectious diseases. Generalized immunity may be thought of as a combination of immune responses to a variety of immune system challenges. Second, single infectious and noninfectious diseases were analyzed separately. Third, infectious reproductive diseases as one category of related conditions, and cystic ovary disease as one category of 3 related noninfectious ovary disorders were studied. Data were analyzed using a threshold model that included herd, calving year, season of calving, and parity as cross-classified fixed factors; and sire and cow within sires as random effects. Days at risk and days in milk at the beginning of a record were included by fitting the days as continuous covariates in the model. A heritability value of 0.202±0.083 was estimated for generalized immunity. Heritability values of 0.141 and 0.161 were estimated for uterine infection and mastitis, respectively. Heritability of single noninfectious disorders ranged from 0.087 to 0.349. The amount of additive genetic variance recovered in the underlying scale of noninfectious disorders tended to zero when combining multiple conditions. The study supports combining infectious diseases into categories of interest but we do not recommend the same approach for noninfectious disorders.
doi_str_mv 10.3168/jds.S0022-0302(05)72786-7
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I. Estimation of Genetic Parameters for Single Diseases and General Health</title><title>Journal of dairy science</title><addtitle>J Dairy Sci</addtitle><description>Health data collected from 1996 to 1999 from 177 herds in Minnesota and Wisconsin were analyzed to establish genetic basis for infectious and noninfectious diseases. Three types of health traits were targeted. First, available infectious conditions were used to identify animals that are superior in their general immunity (including innate immunity) for infectious diseases. Generalized immunity may be thought of as a combination of immune responses to a variety of immune system challenges. Second, single infectious and noninfectious diseases were analyzed separately. Third, infectious reproductive diseases as one category of related conditions, and cystic ovary disease as one category of 3 related noninfectious ovary disorders were studied. 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subjects Abomasum
animal diseases
animal health
Animal productions
Animals
Biological and medical sciences
Cattle
Cattle Diseases - epidemiology
Cattle Diseases - genetics
Cattle Diseases - immunology
Communicable Diseases - epidemiology
Communicable Diseases - genetics
Communicable Diseases - veterinary
disease prevalence
disease resistance
disease surveillance
Female
Food industries
Fundamental and applied biological sciences. Psychology
generalized immunity
genetic evaluation
Genetic Predisposition to Disease
Health Status
heritability
Holstein
immunity
infectious diseases
Lactation - genetics
Lactation - physiology
Lactation Disorders - epidemiology
Lactation Disorders - genetics
Lactation Disorders - veterinary
Linear Models
Male
Mastitis, Bovine - epidemiology
Mastitis, Bovine - genetics
mathematical models
Milk and cheese industries. Ice creams
Minnesota - epidemiology
Ovarian Cysts - epidemiology
Ovarian Cysts - genetics
Ovarian Cysts - veterinary
ovarian diseases
Parturient Paresis - epidemiology
Parturient Paresis - genetics
Pregnancy
Quantitative Trait, Heritable
Risk Factors
Stomach Diseases - epidemiology
Stomach Diseases - genetics
Stomach Diseases - veterinary
Terrestrial animal productions
Vertebrates
Wisconsin - epidemiology
title Genetic Basis and Risk Factors for Infectious and Noninfectious Diseases in US Holsteins. I. Estimation of Genetic Parameters for Single Diseases and General Health
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