Ráðunautafundur - 15.02.2003, Side 130

128
HEIMILDIR
Ágúst Sigurðsson & Jón Viðar Jónmundsson, 1995. Inbreeding and its impact in the closed population of Ice-
landic dairy cattle. Acta Agric. Scand., sect. A, Animal Sci. 45: 11-16.
Baldur Helgi Benjamínsson, 1999. Áhrif eríða á endingu mjólkurkúa af íslensku kyni. B.Sc. verkefiii. Búvísinda-
deild Bændaskólans á Hvanneyri, 32 s.
Baldur Helgi Benjamínsson, 2001. Undersagelse af kalvedodelighed i den islandske population - omfang og
ársager. 9 ein. verkefhi í faraldsfræði við Den Kgl. Veterinær- og Landbohajskole, Institut for Husdyrbrug og
husdyrsundhed, 28 s.
Baldur Helgi Benjamínsson, 2002. Genetic variation for longevity exists in the Icelandic dairy cattle population.
M.Sc. verkefhi. The Royal Veterinary- and Agricultural University, Copenhagen, Denmark, 95 s.
Boldman, K.G., Freeman, A.E., Harris, B.L. & Kuck, A.L., 1992. Prediction of sire transmitting abilities for herd
life from transmitting abilities for linear type traits. J. Dairy Sci. 75: 552-563.
Brotherstone, S. & Hill, W.G., 1991a. Dairy herd life in relation to linear type traits and production. 1. Pheno-
typic and genetic analyses in pedigree type classified herds. Anim. Prod. 53: 279-287.
Brotherstone, S. & Hill, W.G., 1991b. Dairy herd life in relation to linear type traits and production. 2. Genetic
analyses forpedigree and non-pedigree cows. Anim. Prod. 53: 279-287.
Buenger, A., Ducrocq, V. & Swalwe, H.H., 2001. Analysis of survival in dairy cows with supplementary data on
type scores and housing systems fforna region ofNorthwest Germany. J. Dairy Sci. 84: 1531-1541.
Dekkers, J.C.M., Jairath, L.K. & Lawrence B.H., 1994. Relationships between sire genetic evaluations for con-
formation and functional herd life of daughters. J. Dairy Sci. 77: 844-854.
Ducrocq, V., 1999. Two years of experience with the French genetic evaluation of dairy bulls on production-
adjusted longevity of their daughters. Erindi á GIFT-vinnubúðum, Jouy-en-Josas, Frakklandi, maí 1999.
Ducrocq, V., 2001. Survival Analysis Applied to Animal Breeding and Epidemiologi. Námskeiðsefni. Station de
Génétique Quantitative et Appliquée. Institut National de la Recherche Agronomique. F-78352 Jouy-en-Josas
Cedex, France, 91 s.
Ducrocq, V. & Sölkner, J., 1998. The Survival Kit - V3.0. A package for large analyses of survival data. Proc-
eedings of the 6* World Congress on Genetics Applied to Livestock Production 27, 447-448.
Ducrocq, V. & Sölkner, J., 2000. The Survival Kit V3.12. Users manual, 78 s.
Diirr, J.W., 1997. Genetic and phenotypic studies of culling in Quebec Holstein cows. Ph.D. thesis, Dept. Anim.
Sci., McGill University, Canada.
Essl, A., 1998. Longevity in dairy cattle: a review. Livest. Prod. Sci. 57(1998): 79-89.
Foster, W.W., Freeman, A.E., Berger, P.J. & Kuck, A., 1989. Association of type traits scored linearly with
production and herdlife of Holsteins. J. Dairy Sci. 72: 2651-2664.
Funk, D.A., 1993. Optimal genetic improvement for the high producing herd. J. Dairy Sci. 76: 3278-3286.
Heinrichs, A.J., 1993. Raising dairy replacements to meet the needs of the 21“ century. J. Dairy Sci. 64: 3179-3187.
de Jong, G., Vollema, A.R., van der Beek, S. & Harbers, A., 1999. Breeding for functional longevity in the
Netherlands. Erindi á GIFT-vinnubúðum, Jouy-en-Josas, Frakklandi, maí 1999.
Jón Viðar Jónmundsson, 1994. Förgun íslenskra mjólkurkúa. í: Nautgriparæktin XI. Bændasamtök íslands,
Reykjavík, 114-131.
Jón Viðar Jónmundsson, 2002. Skýrslur nautgriparæktarfélaganna árið 2001. Nokkrar helstu niðurstöður. Freyr
89: 8-13.
Jón Viðar Jónmundsson & Ágúst Sigurðsson, 2002. Kynbótaeinkunnir nauta 2002. Freyr 89: 28-31.
Keller, D.S. & Allaire, F.R., 1987. Relationships of first lactation milk and type traits to cow survival and a sire
index for discounted total milk. J. Dairy Sci. 70: 2116-2126.
Klassen, D.J., Monardes, H.G., Jairath, L., Cue, R.I., & Hayes, J.F., 1992. Genetic correlations between lifetime
production and linearized type in Canadian Holsteins. J. Dairy Sci. 75: 2272-2282.
Korsgaard, I.R., Andersen, A.H. & Jensen, J., 2002. Prediction error variance and expected response to selection,
when selection is based on the best predictor - for Gaussian and threshold characters, traits following a Poisson
mixed model and survival traits. Genet. Sel. Evol. 34: 307-333.