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Estimation of genetic and phenotypic parameters for production traits of Icelandic dairy cattle

, : Estimation of genetic and phenotypic parameters for production traits of Icelandic dairy cattle. Acta Agriculturae Scandinavica Section A Animal Science 43(2): 81-86

Heritabilities, genetic and phenotypic correlations among yields of milk, fat and protein, fat percentages and protein percentages were estimated using a sire model and multivariate REML for 15357 first-lactation records of the Icelandic dairy cow. These heifers were daughters of 136 young and 55 proven Icelandic bulls. Proven sires were treated as fixed effects and did not contribute to the inter-sire variance. Heritabilities for milk, fat and protein yields and fat and protein percentages wee 0.23, 0.17, 0.18, 0.18 and 0.37, respectively. Variance and covariance components were estimated for the same traits, using the first three lactations of 5705 daughters of 138 bulls. Heritabilities for milk yield in the first three lactations were 0.17, 0.12 and 0.10, for fat yield 0.17, 0.10 and 0.09 and for protein yield 0.14, 0.11 and 0.11. Genetic correlation was 0.76 between milk yield in first and second lactation and 0.66 between first and third lactation. Genetic correlations for fat and protein yields ranged from 0.51 to 0.99 and from 0.80 to 0.99 for the percentage traits. Phenotypic correlations between all traits were around 0.40. Repeatabilities were estimated as 0.40, 0.34, 0.40, 0.37 and 0.40 for milk, fat, protein, fat% and protein%, respectively.

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Accession: 002373222

DOI: 10.1080/09064709309410148

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Other references

Knutson Jan; Currie Kenneth L., 1990: The Mud Tank Carbonatite, NT; an example of metasomatism at mid-crustal levels. BMR Research Newsletter: ages 11-12. 1990.

Fessenden P.; Luxton G.; Pistenma D.; Boyd D., 1977: Dosimetry of the stanford pion radio therapy project. Physics in Medicine & Biology 22(1): 152

Likhatchev, Bs; Zelensky, Gv; Kiashko, Yug; Shevchenko, Zn, 1984: Modelling of seed ageing. Seed science and technology2(2): 385-393

Carella, A. M.; Beltrami, G.; Scalzulli, P. R.; Carella, A. M. Jr; Corsetti, M. T., 2004: Alemtuzumab can successfully treat steroid-refractory acute graft-versus-host disease. Bone Marrow Transplantation 33(1): 131-132, January 1

Guinet, P; Le-Thomas, A., 1990: Current knowledge and interpretation of the pollen characters in Annonaceae and Leguminosae, subfamily Mimosoideae. A review of the present knowledge of the pollen characters in Annonaceae (Magnoliales) and Leguminosae-Mimosoideae (Leguminales) is presented. Although evidently unrelated, these families share several uncommon characters in the angiosperms, such...

Barnett M.G.; Bruskewitz R.C.; Belzer F.O.; Sollinger H.W.; Uehling D.T., 1987: Ileocecocystoplasty bladder augmentation and renal transplantation. Journal of Urology 138(4): 855-858

Ohtaki, H.; Mori, S.; Nakamachi, T.; Dohi, K.; Yin, L.; Endo, S.; Okada, Y.; Shioda, S., 2003: Evaluation of neuronal cell death after a new global ischemia model in infant mice. Kuroiwa, T [Editor, Reprint Author], Baethmann, A [Editor], Czernicki, Z [Editor], Hoff, J T [Editor], Ito, U [Editor], Katayama, Y [Editor], Marmarou, A [Editor], Mendelow, A D [Editor], Reulen, H -J [Editor] Brain edema 12 : 97-100

Anon, 1972: The fluid mechanics of thrombus formation. NASA (National Aeronautics & Space Administration) Contractor Report CR(1938): 1-61

Lopez Lopez, J. R.; Wier, W. G., 1994: Gain of CICR in cardiac cells depend on membrane voltage and on SR Ca-2+ content. Biophysical Journal 66(2 PART 2): A132

Krishnaveni Janarthanan, Devanand Balalakshmoji, Harshavardhan T. Sanathkumar, Prasanna Karthik Suthakaran, 2012: Chronic Pancreatitis Presenting with Pseudocyst of Pancreas and Pseudo-aneurysm of Hepatic Artery. A 2-y-old girl presented with recurrent abdominal pain and hematemesis. The patient was diagnosed to have chronic calcific pancreatitis complicated by pseudocyst of the head of pancreas and pseudo-aneurysm of the common hepatic artery. Diagnosis w...