EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

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






Acta Agriculturae Scandinavica Section A Animal Science 43(2): 81-86

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

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.


Accession: 002373222

DOI: 10.1080/09064709309410148



Related references

Shodja, J.; Ahmady, A.; Pirani, N.; Alijani, S., 2003: Estimation of genetic, phenotypic and environmental parameters of milk production traits in Holstein dairy cattle of Moghan Co. farm. The genetic changes in Holstein dairy cattle of Moghan Co. farm iscure estimated and milk records during years 1987-1988 and fat records from 1992 to 1998 were collected for statistical analysis and estimation of (co)variance components and geneti...

Missanjo, E.; Imbayarwo-Chikosi, V.; Halimani, T., 2013: Estimation of genetic and phenotypic parameters for production traits and somatic cell count for jersey dairy cattle in zimbabwe. Genetic and phenotypic parameters for production traits and somatic cell count (SCC) for Jersey dairy cattle in Zimbabwe were estimated. A total of 10986 lactation records were obtained from Zimbabwe Livestock Identification Trust, with cows calvi...

Hoekstra, J.; Van Der Lugt, A.W.; Van Der Werf, J.H.J.; Ouweltjes, W., 1994: Genetic and phenotypic parameters for milk production and fertility traits in upgraded dairy cattle. Genetic parameters for the relation between milk production and fertility were estimated in the Dutch Black and White dairy cow population, a crossbred population of the Holstein Friesian and Dutch Friesian breeds. In the analyses, 82659 records o...

Matthes, H.; Tilsch, K1; Herrendorfer, G1; Karwath, H1; Weber, S.V.no, 1983: Phenotypic and genetic parameters, economic assessment criteria and breeding value estimation results for fattening and slaughter traits in cattle under weight-specific station testing Black-Pied dairy cattle.1. Archiv fur Tierzucht6(3): 251-260

Malik, Z.S.; Singh, D.; Dhaka, S.S.; Dalal, D.S., 1995: Studies on genetic and phenotypic parameters of production and reproduction efficiency traits in crossbred dairy cattle. Data were analysed on reproductive and dairy traits, recorded in 1975-84, on 244 crossbred cows with Friesian, Brown Swiss or Jersey sires and Hariana dams. The hsuperscript 2s of 2 breeding efficiency indices were 0.635+or-0.28 and 0.600+or-0.26....

Lee, K.J.; Kang, M.G.; Park, K.D.; Kang, M.S.; Choi, J.B., 1994: Estimation of Genetic Parameters for Type and Production Traits in Dairy Cattle. Three thousand two hundred twenty-one linear type records, 3,298 production records and 1,652 type-production records of Holsteins in Korea collected from 1984 to 1994 by the KAIA (Korea Animal Improvement Association) were analyzed to estimate ge...

Uribe, H.A.; Smulders, J.P., 2004: Phenotypic, environmental and genetic parameters and trend estimation for milk production traits in Overo Colorado cattle. Chile has several cattle breeds that have been brought from Europe which have developed adaptation traits, some of them non-existing in more specialized breeds. The Overo Colorado (red and white) breed has been introduced in Chile in the 19th cent...

Rao M.K.; Dommerholt J., 1981: Estimation of reliable genetic parameters for production traits in a tropical breed of dairy cattle. The data consisted of 1034 1st lactation records made by Tharparkar breed of cows over a period of 48 yr maintained at National Dairy Research Institute, Karnal, India. The production traits analyzed were 305-day and total lactation yields and ave...

Dedkova, L.; Wolf, J., 2001: Estimation of genetic parameters for milk production traits in Czech dairy cattle populations. The genetic parameters for milk, fat and protein yields were estimated during the first 3 lactations of Holstein-Friesian and Czech Pied cattle kept in the Czech Republic. Data sets from the national milk recording data base were used. Five subset...

Khani, J.; Edriss, M.A.; Ayatollahi Mehrgardi, A., 2006: Estimation of genetic parameters for milk production traits using test day records of Holstein dairy cattle of Iran. Genetic parameters of milk yield, fat percent and fat yield of test day (TD) and 305-day record were estimated in Holstein cows kept in Isfahan province of Iran during 1990 to 2002 using restricted maximum likelihood (REML) applied to a multiple t...