Íslenskar landbúnaðarrannsóknir - 01.03.1980, Page 85

Íslenskar landbúnaðarrannsóknir - 01.03.1980, Page 85
RANNSÓKN Á AFURÐATÖLUM 83 typic and genetic parameters in dairy cattle. lst world congress on genetics applied to livestock production, 7.-11. october 1974. Madrid. Plenary sessions: 541-563. Robertson, A. 1959. Experimental design in the evaluation of genetic parameters. Biometrics, 15:219-226. Rönningen, K., 1967. Phenotypic and genetic para- meters for characters related to milk production in cattle. Acta Agric. Scand., 17:82-100. Schaeffer, L. R. ogHenderson, C. R., 1972. Effects of days dry and days open on Holstein milk pro- duction. J. Dairy Sci., 55:107-112. Sigurjónsson, Þórður G., 1973. Fyrsta kálfs kvígur í Eyjafirði. Aðalritgerð við Framhaldsdeildina á Hvanneyri, 49 s. Steindórsson, Guðmundur, 1970. Ahrif burðaraldurs og burðartíma kvígna á afurðir fyrsta mjólkur- skeiðs. Aðalritgerð við Framhaldsdeildina á Hvanneyri, 37 s. Steine, T. A., 1975. Einskild-kontrollar og del—laktasjonar hos geit. Meld. Norg. Landbr. Högsk., 54, Nr. 31, 25 s. Steinþórsson, Sigurður 1975. Athugun á mjaltakúrfu — mjólkurþol og arfgengi. Aðalritgerð við Fram- haldsdeildina á Hvanneyri, 46 s. Syrsiad, O., 1964. Studies on dairy herd records. I. Evulation of incomplete records. Acta Agric. Scand., 14:129-149. Van Vleck, L. D., 1963. Regression of records on herd-mate average. J. Dairy Sci., 46:846-849. Van Vleck, L. D. og Henderson, C. R., 1961. Regres- sion factors for extending part-Iactation milk records. J. Dairy Sci., 44: 1085-1092. Wiggans, G. og Van Vleck, L. D., 1977. Interpolation for extension factors. J. Dairy Sci., 60: 1653-1654. Wiggans, G. og Van Vleck, L. D., 1979. Extending partial lactation milk and fat records with a func- tion of last-sample production. T. Dairv Sci., 62:316-325.

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