Íslenskar landbúnaðarrannsóknir - 01.03.1979, Síða 95

TRAITS IN ICEL. TOELTER HORSES I. 93
performance in the study of heredity in horse
breeding. Scientia Agric. Bohemnoslovaca. 3: 199-
216.
Falconer, D. S. 1960. lntroduction to quantilativegenetics.
Oiiver and Boyd. Edinburgh.
Falconer, D. S. 1963. Quantitative inheritance. In
Methodology in Mammalian Genetics (ed. W.J. Bur-
dette), pp. 193-216. Holden-Day, Inc., San Fra-
ncisco.
Gjedrem, T. 1967. Selection indexes compared with
single trait selection. I. The efíiciency ofinclud-
ing correlated traits. Acta Agric. scand. 17: 263-268.
Gowen, J. W. 1933. On the genetic constitution of
Jersey cattle, as irifluenced by inheritance and
environment. Genetics, 18: 415-440.
Groot, P., Politiek, R. D. and Vos, M. P. 1966. [The
importance, for breeding, of the performance
testing of horses.] Veeteelten Zuivelber, 9: 222-229.
Hammond, K. and Nicholas, F. W., 1972. The sampl-
ing variance of the correlation coefficients estim-
ated from two-fold nested and offspring-parent
regression analyses. Theoretical and Applied Genet-
ics, 42: 97-100.
Harvey, W. R. 1960. Least squares analysis of data with
unequal subclass number. U. S. Dept. Agric., Agric-
ultural Research Service Publ. ARS 20-8.
Harvey, W. R. 1972a. Instructions for use of LSMLMM
(Mimeögraph). Ohio State University.
Harvey, W. R. 1972b. General Outline of computing
Procedures for sex Types of mixed Models (Mimeog-
raph). Ohio State University.
Henderson, C.R. 1963. Selection indexes and expec-
ted geneticadvance. In Statistical Genetics and Plant
Breeding. (ed. W. D. Hanson and H. F. Robin-
son), pp. 141-163, Publ. 982. National Academy
of Sciences — National Research Council, Was-
hington D. C.
Hill, W. G. 1975. Combination ofinformation from
different sources for estimation of genetic param-
eters. A paper given to the Commission on An-
imal Geneties at the E.A.A.P. study meeting in
Warsaw, June 23-27.
Hill, W. G. and Nicholas, P. W. 1974. Estimation of
heritability by both regression of offspring on
parent and intra-class correlation of sibs in one
experiment. Biometrics, 30: 447-468.
Jósafatsson, Guðmundur, 1955. Hrossaræktin [The
Pony-Breeding.] Freyr, 50: 57-76.
Kalmykov, A. N., 1975. [The selection of Orlov
Trotters for body measurements.]Z7cfenye Zapiski
Kazanskogo Gosudarstrennogo Veterinarnogo Instituta
(1974), 116: 158-279 (Anim. Breed. Abstr. 44: Nr.
1054).
Kieffer, N. M., 1976. Heritability ofracing capacity
in the thoroughbred. In Proceedings of the lnternat-
ional Symposium on Genetics and Horse Breeding, pp.
9-15. Royal Dublin Society, Ballsbridge, Dublin
4.
Kownacki, K.,Jaszczak, K. and Wlodarska, A., 1969.
Genetic parameters of certain points in the Wiel-
kopolski Half-Breed Horse. Genet. Pol. 10:1-2.
Kownacki, M., Fabiani, M. and Jaszczak, K. 1971.
Genetical parameters of some traits of Thor-
oughbred Horses. Genet. Pol. 12: 431-435.
Politiek, R. D. and VOS, H., 1969. [Preliminary
analyses of the IBOP saddle tests.J Veeteelden Zu-
ivelber. 12: 463-469.
Rqnningen, K., 1972a. The effect ofselection ofprog-
eny performance on the heritability estimated by
half-sib correlation. Acta Agric. scand. 22: 90-92.
Rdnningen, K., 1972b. The effect of selection on her-
itabiiities estimated by twice the parent offspring
regressions or twice the parent offspring correl-
ations. Acta Agric. scand. 22: 200-204.
Sales, J. and Hill, W. G., 1976. Effect of sampling
errors on efficiency of selection indices. 2. Use of
information on associated traits for improvement
of a single important trait. Anim. Prod. 23: 1-13.
Skjervold, H. 1958. [Registration of meat production
characteristics in cattle.] Meld. Norg. Landbr.
Hogsk. 37: 144 pp.
Thompson, R., 1976. Design of experiments to estim-
ate heritability when observations are available
on parents and offspring. Biometrics, 32: 283-304.
Touchberry, R. W., 1951. Genetic correlations betwe-
en five body measurements, weight, type and
production in the same individual among Hol-
stein cows.J. Dairy Sci. 24: 242-255.
Varo, M., 1965. Some coefficients of heritability in
horses. Annals agric. fenniae, 4: 223-237.
Varo, M., 1969. [Results from performance tests of
Finnish horses.] Internat. Symp. Europ. Ver.f. Tierz-
ucht (FAO), Helsinki.
Watanabe, Y. and Shimoiizaki, t., 1964. Analysis of
Quantitative Character in Grazing Horses. III.
History of Breeding. Journal of the Faculty of Agric-
ulture, Hokhaido Univ. 53: 353-365.
Weber, F., 1957. [The statistical and genetical bases
of body measurements in Cattle.] Z. Tierziicht
ZuchBiol. 69: 225-260.