+ Site Statistics
+ 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

Agreement between estimated and realised genetic parameters

Animal Breeding Abstracts 56(11): 877-889

Agreement between estimated and realised genetic parameters

A review of the animal breeding literature was carried out to determine the utility of genetic parameter estimates in the prediction of selection responses. Realised genetic parameters were compared with genetic parameter estimates obtained from the same base population, from within a control line derived from the same base population, or from within the selection line itself.

Accession: 001748478

Related references

Jorjani, H., 1990: Causes of disagreement between estimated and realised genetic parameters. A discussion. It concludes that errors in estimating the standardised selection differential due to a reduction in the genetic variance, and correlation among family members, and positive and negative assortative mating are contributory factors.

Puff, H., 1976: Expected and realised genetic progress in Lower Bavarian pig breeding. I. Realised genetic gain. The results of the official sib and progeny tests at the Grub Testing Station, from the beginning of 1962 till June 1973, on 9210 German Landrace pigs were analysed. Eight fattening and carcass characters were analysed for the 3 types of feeding u...

Yamada, Y., 1968: On the realised heritability and genetic correlation estimated from double selection experiments when two characters are measured. A correction factor is given for a formula of Ideta and Siegel see A.B.A., 35, No. 1931, a new parameter, co-heritability, is proposed, and formulae are given for phenotypic, genetic and environmental correlations in double selection experiments.

Brade, W., 1984: Studies on the realised genetic gain in dairy traits during the development of Black Pied cattle. 3. Determination of the realised genetic gain in systematically bred mixed population. The animals used, described in Pt. 2 [see ABA 52, 6387], consisted of a Black Pied population containing infusions of Danish Jersey, British Friesian and Holstein-Friesian blood. Two methods were used to estimate realised genetic gain: (1) from da...

Brade, W., 1984: Studies on the realised genetic gain in dairy traits of Black Pied cattle. 2. Realised genetic gain of AI bulls of different genotypes. First-lactation records of 177 136 cows in 1967-80, representing the German Black Pied (GBP), Friesian and Jersey breeds and 12 crossbred combinations involving 2 or 3 of these breeds, were analysed. For the GBPs, Jerseys and crossbreds there were...

Kretzschmar, B., 1979: Study of the estimation of realised genetic gain in dairy performance characters from trends in bull breeding values. 2. Estimation of the realised genetic gain using the earliest and most recent daughters. The aim of the investigation was to determine the loss of accuracy in estimating genetic gain from data based on a bull's breeding value estimated from the performance of his first and most recent daughters compared with the value for genetic...

Kretzschmar, B.; Clausing, P., 1977: Study of the estimation of realised genetic gain in dairy performance characters from trends in bull breeding values. 1. Estimation of realised genetic gain using several daughter age classes. 32 674 first-lactation records obtained between 1 Jan. 1967 and 31 Dec. 1971 for German Black Pied heifers in 58 sire groups were analysed for genetic trend using (1) the general regression model given by Smith [see ABA 30, 1990], (2) the av. regr...

Gunsett, F.C., 1981: Utilisation of multiple trait selection experiments for the estimation of realised genetic parameters. A Monte-Carlo simulation program was used to generate populations on which single-generation selection experiments were conducted. An additive genetic model was assumed. A 2-stage procedure for estimating variances, in which the covariance structu...

Ollivier, L., 1985: A 10-year experiment on individual selection of boars used in artificial insemination. 3. Realised genetic parameters. Realised genetic parameters were derived from the results of a selection experiment carried out at a French AI centre. The data, covering the period 1966-74, concerned (1) boars selected for an index based on av. daily gain from 30 to 80 kg (varia...

Balasubramanian, M.; Bowd, C.; Weinreb, R.N.; Zangwill, L.M., 2011: Agreement between the Heidelberg Retina Tomograph (HRT) stereometric parameters estimated using HRT-I and HRT-II. To assess agreement between Heidelberg Retina Tomograph (HRT)-I and HRT-II stereometric parameters and to determine whether parabolic error correction (PEC) to the topographies improves agreement. University of California San Diego Diagnostic Inno...