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Abstract

The paper deals with inheritance of main colours and spotting patterns in Icelandic cattle. The main colours are six, i.e. red, brindle, brown, black, dun and blue roan. The spotting patterns are spotted, two types of white face, inguinal white, colour sided, white with pigmented ears and muzzle...

Author(s)
Bjarnadóttir, S.; Ađalsteinsson, S.
Publisher
Rannsóknastofnun Landbúnaörins, Reykjavík, Iceland
Citation
Búvísindi, 2002, No.15, pp 61-79
Abstract

Between 1991 and 1996, 1949 samples were taken from chickens, horses, sheep, cattle and pigs at abattoirs throughout Iceland and screened with 2 agar diffusion tests for antibiotic residues. No traces of antibiotic residues were found in sheep, horses, cattle or chickens. However 6.5% of samples...

Author(s)
Hjartardóttir, S.; Hansson, S. Ö.; Gunnarsson, E.
Citation
Búvísindi, 1997, No. 11, pp 141-149
Abstract

The pasture used in the study was on reclaimed peat soil commonly used for hayfields, the dominant grass species being Poa pratensis, Alopecurus geniculatus and Deschampsia cespitosa. Artificial fertilizers (NPK) were applied in May each spring, with an additional dressing of N in late summer of...

Author(s)
Dýrmundsson, Ó. R.; Jónmundsson, J. V.
Citation
Búvísindi, 1996, No. 10, pp 219-240
Abstract

This paper reviews studies of the ovarian activity of lactating dairy cows on 11 farms in 2 areas of Iceland during 1983-86 and 1988-89. The cows on 10 farms were housed in tie-stalls and on 1 farm in a free stall. On 4 of the farms the cows were milked in a separate milking parlour. They were...

Author(s)
Eldon, J.
Citation
Búvísindi, 1991, No. 5, pp 3-8
Abstract

The postpartum progesterone profiles of 41 cows on 2 farms were studied. Progesterone was determined by radioimmunoassay in fat-free milk samples collected daily on one farm and 3 times a week on the other farm. About half of the cows had a normal progesterone profile with a short anovulatory...

Author(s)
Eldon, J.
Citation
Búvísindi, 1991, No. 5, pp 9-14

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