Íslenskar landbúnaðarrannsóknir - 01.09.1977, Síða 76

74 ÍSLENZKAR LANDBÚNAÐARRANNSÓKNIR
HEIMILDASKRÁ. — REFERENCES.
Arason, Bjarni, 1969: Töflur með erindi Bjarna
Arasonar um afkvæmarannsóknir á nautum.
Fundur ráðunauta 1969. Fjölrit 9.
Auran, T., 1976: Studies on monthly and cumu-
lative monthly milk yield records. IV. Esti-
mating total lactation from part-lactations. Acta
Agr. Scand., 26: 10—17.
Danell, B., 1976: Innverkan av álder, kalvings-
mánad och besáttingens avkastningsnivá pá av-
kastningen under första laktationen. Landbruks-
högskolans meddelanden, Serie A, Nr. 255.
43 s.
Fimland, E. A., 1976: Estimation of sires breeding
value. VI. Different linear prediction methods
discussed in the context of the breeding struc-
ture of the population. Z. Tierziichtg. Ziichtgs-
biol., 93: 14—30.
Fimland, E. A., Bar-Anan, R., og Harvey, W. R.,
1972: Studies on dairy records from Israeli-
Friesian cattle. I. Influence of some environ-
mental effects. Acta Agr. Scand., 22: 34—48.
Freeman, A. E., 1973: Age adjustment of pro-
duction records. History and basic problems. J.
Dairy Sci., 56: 941—946.
Gravir, K. og Hickman, C. G., 1966: Importance
of lactation number, age and season of calving
for dairy cattle breed improvement. Canada
Dep. of Agriculture Publications 1239, 31 s.
Hammond, J., 1958: Skýrsla um búfjárrækt á
íslandi. Búnaðarrit 71: 351—3'67.
Harvey, W. R., 1960: Least square analyses of
data with unequal subclass number. USDA,
ARS 20—8. 157 s.
Henderson, C. R., 1949: Estimation of changes in
herd environment. J. Dairy Sci., 32: 706.
Henderson, C. R., 1973: Sire evaluation and
genetic trends. Proc. of the Animal Breeding
and Genetics Symp. In Honor of Dr. J. L.
Lush, A.S.A.S. and ADSA, Champaign, Illinois:
10—41.
Henderson, C. R., 1974: General flexibility of
linear model techniques for sire evaluation. J.
Dairy Sci., 57: 963—972.
Hickman, C. G., 1973: Herd-level methods for
age adjustment of milk yields. J. Dairy Sci. 56:
947—951.
Johansson, I. og Hansson, A., 1940: Causes of
variation in milk and butterfat yield of dairy
cows. K. Landbr. Akad. Tidskr., 79: 1—127.
Jónmundsson, Jón Viðar, 1975: Mat á kynbóta-
gildi gripanna í nautgriparæktarfélögunum.
Freyr, 71: 146-—151.
Jónmundsson, Jón Viðar, 1976: Athugun á leið-
réttingum. Fjölrit, 14 s.
Jónmundsson, Jón Viðar og Jónsson, Magnús B.,
1975: Niðurstöður úr skýrslum nautgriparækt-
arfélaganna árið 1974. Freyr, 71: 152—158.
Jónsson, Magnús B., 1968: Variasjonsársaker i
melkeavdrátten hos islandske kyr. Licensiatrit-
gerð við N.L.H., 106 s.
Jónsson, Magnús B. og Jónmundsson, Jón Viðar,
1974: Kynbótaskipulag fyrir íslenska kúastofn-
inn. ísl. landbún., 6 (1—2): 49—63.
Jónsson, Olafur, 1966: Bætt meðferð eða kyn-
bætur. Ársrit Ræktunarfélags Norðurlands 63:
65—75.
Lindström, U., Maijala, K. og Vilva, V., 1971:
Studies on A.I. dairy sire proving. II Sire x
region interactions. Z. Tierzúchtg. Zúchtgsbiol.
88: 1—11.
Lush, J. L. og Shrode, R. R., 1950: Changes in
milk production with age and milking fre-
quency. J. Dairy Sci., 33: 338—357.
McDaniel, B. T., 1973: Merits and problems of
adjusting to other than mature age. J. Dairy
Sci, 56: 959—967.
Miller, P, 1973: A recent study of age adjust-
ment. J. Dairy Sci, 56: 952—958.
Miller, P. D, Lentz, W. E. og Henderson, C. R,
1970: Joint influence of month and age of
calving on milk yield of Holstein cows in the
Northeastern United States. J. Dairy Sci, 53:
351—357.
Miller, R. H, Harvey, W. R, Tabler, K. A,
Mc Daniel, B. T, og Corley, E. L, 1966:
Maximum likelihood estimates of age effects.
J. Dairy Sci, 49: 65—73.
Searle, S. R, 1971: Linear Models. John Wiley
& Sons, New York, 532 s.
Searle, S. R. og Henderson, C. R, 1959: Esta-
blishing age-correction faaors related to the
level of herd production. J. Dairy Sci, 42: 824
835.
Searle, S. R. og Henderson, C. R, 1960: Judging
the effeaiveness of age correaion faaors. J.
Dairy Sci, 43: 9'66—974.