Single Gene Effects on the Performance of West German Bred Cockerels of Different Genotypes Under Zambian Conditions

References

• Bernier, P. E. and Arscott, G. H. (1972). Fifteen years of observation on the dwarf gene in the domestic fowl. World's Poultry Sci. 27, 279.
   Google Scholar
• Bernier, P. E. and Arscott, G. H. (1966). Growth and feed requirements of dwarf White Leghorn pullets as compared to their normal-sized sisters. Poultry Sci. 45, 1070.
   Web of Science ®Google Scholar
• Bernier, P. E. and Arscott, G. H. (1960). Relative efficiency of sex-linked dwarf layers and their normal-sized sisters. Poultry Sci. 39, 1234–1235.
   Web of Science ®Google Scholar
• Bordas, A., Merat, P., Dergent, D. and Richard, F. H., (1978). Influence of the Na gene (naked neck) on growth, feed consumption and temperature. Ann. Genet. Sci. Anim 10, 209–231.
   PubMedGoogle Scholar
• Dormeney, R. W., Arscott G. H. and Bernier P. E., 1974. Comparative performance of caged normal and dwarf White Leghorn layers as affected by bird density and perches. Poult. Sci. 53, 2085–2092.
   Google Scholar
• Fisher, R. A. (1921). On the “Probable error” of a coefficient of correlation deduced from a small sample. Metron 1, 3–32.
   Google Scholar
• French, H. L. and Nordskog, A. W. (1974). Performance of dwarf chickens compared with normal small-bodied chickens. Poultry Sci. 52, 1318–1328.
   Web of Science ®Google Scholar
• Guillaume, J. (1972). Some nutritional and physiological traits of the dw chick. World's Poultry Sci. 27, 284.
   Web of Science ®Google Scholar
• Guillaume, J. (1969). Consequences de L'introduction du gine de manisme dw sur l'utilisation alimentaire chez le poussin femelle. Ann. Biol. Anim. Bioch. Biophys. 9, 369–378.
   Google Scholar
• Guillaume, J. (1972). Quelques particularities nutritionalles et physiologiques au pussins nain dw. Ann. Geneet. Sel. Anim. 4, 233–250.
   PubMedGoogle Scholar
• Guillaume, J. (1976). The dwarfing gene dw: its effects on anatomy, physiology, nutrition and management. Its application in poultry industry. World's Poultry Sci. J. 32, 285–304.
   Web of Science ®Google Scholar
• Hanzl, C. J. and Somes R. G. Jr. (1983). The effect of the naked neck gene, Na, on growth and carcass composition of broilers raised in two temperatures. Poultry Sci. 62, 934–941.
   PubMed Web of Science ®Google Scholar
• Harvey, W. R., (1976). Mixed model least-squares and maximum likelihood computer programme. MSD, ARS, 20 Washington, D.C.
   Google Scholar
• Horst, P., (1983). Effects of genotype x environment interactions on efficiency of improvement of egg production. 18th Poult. Sci. Symposium, Edinburgh, 14–16 Sept.
   Google Scholar
• Horst, P. (1984). Livestock breeding for “Productive Adaptability” to unfavourable environments. 2nd World Cong, on sheep and beef cattle breeding, Pretoria, 16–19 Sept.
   Google Scholar
• Hutt, F. B. (1959). Sex linked dwarfism in the fowl. J. Hered 50 209–221.
   Google Scholar
• Jaap. R. G. (1972). Effect of sex-linked genes on body size and reproduction. World's Poult. Sci. 27 281.
   Google Scholar
• Kossim, M., Horst P. and Monreal, G. (1984). Immune response and health status of laying hens during long term heat stress. Animal Research and Development Vol. 20 19–101.
   Google Scholar
• Marks, H. L. (1980). Early feed intake comparison of selected and non-selected broilers. Poultry Sci. 59 1167–1171.
   Web of Science ®Google Scholar
• Maudlin, J. M. Siegel, P. B., and Gross, W. B. (1978). Dwarfism in diverse genetic backgrounds 2. Behavious and disease resitance Poultry Sci. 57, 1488–1492.
   Google Scholar
• Maurier, C. (1972). Observations on dwarf layers particularly in the presence of Mareks disease in random sample tests at Ploufragan. World's Poultry Sci. 27, 283.
   Web of Science ®Google Scholar
• Merat, P. (1979). Effects associated with the Na gene (Naked neck) on body weight and egg weight in normal-sized and dwarf hens. Ann. Genet. Sel. Anim. 11, 127–131.
   PubMedGoogle Scholar
• Mohammadian, M. and Japp, R. G. (1972). Effect of sex. linked dw dwarfing gene on body growth of chickens. Poultry Science 51, 1701–1707.
   Web of Science ®Google Scholar
• Monnet, L. E., Bordas A. and Merat, P. (1979). Naked neck gene and growth performance of chicks according to ambient temperature. Ann. Genet. Sel. Anim. 11, 397–412.
   PubMedGoogle Scholar
• Monnet, L. E., Bordas, A. and Merat, P. (1980). Naked neck gene, body weight and anatomical and physiological traits of pullets and adult hens according to ambient temperature. Ann. Genet. Sel. Anim. 12, 241–254.
   PubMedGoogle Scholar
• Peetersen, J., M. M. (1976). der Kor pertemperatur als Akklimatisation-sparameter beim legehuhn 2. Turziichy. Zucht Biol. 93, 237–257.
   Google Scholar
• Quisenberry, J. H., 1972. High density diets for dwarf layers. World's Poult. Sci. 27, 289.
   Web of Science ®Google Scholar
• Rauen, H. W. (1985). Auswirkung des Gens für Befiederungsreduktion and Nackthalsigkeit (Na-Gen) auf das produktive adptatronsuermogen von eghennen an hohe umgebungstempraturen. Diss., TU Berlin.
   Google Scholar
• Schrader, R. (1979). Antikörperbildung und leistungsentwicklung bei Hühnern unter gemaBigten und hohen Temperaturbending ungen. Inaugural Dissertation am Fachbereich Vet. Med. der Freien universtät Berlin.
   Google Scholar
• Steel, R. G. D. and Torrie, J. H. (1980). Principles and procedures of statistics. International student Edition, McGraw-Hill Kogakusha Ltd.
   Google Scholar
• Touchburn, S. P., Guillaume, P., Leclercq, B. B. and Blum. J. C. (1980). Lipid and energy metabolism in chicks affected by dwarfism (dw) and naked-neck (Na.) Poultry Science 59, 2189–2197.
   PubMed Web of Science ®Google Scholar