References
- Arboleda , C.R. , Harris , D.L. and Nordskog , A.W. 1976a . Efficiency of selection in layer‐type chicken by using supplementary information on feed consumption. I. Selection index theory . Theoretical and Applied Genetics , 48 : 67 – 73 .
- Arboleda , C.R. , Harris , D.L. and Nordskog , A.W. 1976b . Efficiency of selection in layer‐type chickens by using supplementary information on feed consumption. II Application to net income . Theoretical and Applied Genetics , 48 : 75 – 83 .
- Bentsen , H.B. 1983 . Genetic variation in feed efficiency of laying hens at constant body weight and egg production. I: Efficiency measured as a deviation between observed and expected feed consumption . Acta Agricultures Scandinavica , 33 : 289 – 304 .
- Bordas , A. and Merat , P. 1974 . Variabilité génétique et corrélations phenotypiques caracterisant la consommation alimentaire de poules pondeuses aprés correction pour le poids corporel et la Ponte . Anuales de Génétique et de Animale , 6 (3) : 369 – 379 .
- Bordas , A. and Merat , P. Responses liées dans une expérience de sélection sur la consommation alimentaire “residuelle” de coqs et poules Rhode Island . Proceedings and Abstracts, XVII World's Poultry Congress and Exhibition . August 8–12 , Helsinki, Finland. pp. 106 – 108 . WPSA .
- Falconer , D.S. 1982 . Introduction to Quantitative Genetics. Population Genetics , 2nd edn , 340 London and New York : Longmans .
- Gowe , R.S. , Roberts , A. and Latter , B.D. 1959 . Environment and poultry breeding problems. 5. The design of poultry control strains . Poultry Science , 38 : 462 – 471 .
- Hagger , C. and Abplanalp , H. 1978 . Food consumption records for the genetic improvement of income over food costs in laying flocks of White Leghorn . British Poultry Science , 19 : 651 – 667 .
- Harvey , W.R. 1987 . Mixed model least squares and maximum likelihood computer program PC‐1 46 Mimeograph
- Liljedahl , L.‐E. , Kolstad , N. , Sørensen , P. and Maijala , K. 1979 . Scandinavian selection and crossbreeding experiment with laying hens. I. Background and general outline . Acta Agriculturae Scandinavica , 29 : 273 – 286 .
- Luiting , P. Selection for feed efficiency in laying hens . 29th British Poultry Breeders’ Roundtable Conference . September 16–18 , Edinburgh.
- Nordskog , A.W. , French , H.L. Jnr , Arboleda , C.R. and Casey , D.W. 1972 . Breeding for efficiency of egg production . World's Poultry Science Journal , 28 : 175 – 188 .
- SAS . 1985a . SAS User's Guide: Statistics , 5th edn , The Stepwise Procedure 763 – 774 . USA : Institute Inc. North Carolina .
- SAS . 1985b . SAS User's Guide: Basics , 5th edn , The Univariate Procedure 1181 – 1191 . USA : Institute Inc. North Carolina .
- SAS . 1985c . SAS User's Guide: Statistics , 5th edn , The GLM Procedure 433 – 504 . USA : Institute Inc. North Carolina .
- Shapiro , S.S. and Wilk , M.B. 1965 . An analysis of variance test for normality (complete samples) . Biometrika , 52 : 591 – 611 .
- Wing , T.L. and Nordskog , A.W. 1982 . Use of individual feed records in a selection program for egg production efficiency. I. Heritability of the residual component of feed efficiency . Poultry Science , 61 : 226 – 230 .