Skip to main content Accessibility help
×
Home

Heritabilities and genetic correlations of egg production and other characters in a White Wyandotte flock

  • R. W. Hale (a1)

Extract

Five years' records of unculled White Wyandotte flocks at Hillsborough, Northern Ireland, were analysed to give estimates of heritabilities and of genetic and environmental correlations by two methods. Pooling data for four years and eliminating hatch effects gave heritabilities of 0·28 for eggs laid by survivors to 500 days; 0·61 for weight of pullets at penning; 0·51 for weight of pullets at 8 weeks; 0·18 for days to first egg; and 0·71 for spring egg weight. These are in general agreement with most other published figures, as are most of the genetic correlations. A suggestion of sex-linkage in the genetic correlations between weight at 8 weeks and days to maturity was not supported by other figures from the data. The method of eliminating hatch effects, unexpectedly, gave higher heritability figures where heritability was already moderate or high. It gave numerically greater figures in most genetic correlations, but did not lead to an expected reduction in the environmental correlations. The data were probably inadequate for a rigorous test of the method.

Copyright

References

Hide All
Abplanalp, H., 1957. Genetic and environmental correlations among production traits of poultry. Poult. Sci., 36: 226.
Dickerson, G. E., 1957. Genetic covariation among some economic characters of Leghorn-type chickens. Poult. Sci., 36: 1112 (Soc. Proc).
Dillard, E. V., Dickerson, G. E., & Lamoreux, W. F., 1953. Heritabilities of egg and meat production qualities and their genetic and environmental relationships in New Hampshire pullets. Poult. Sci., 32: 897 (Soc. Proc).
El-Ibiary, H. M., & Shaffner, C. S., 1951. The effect of induced hypothyroidism on the genetics of growth in the chicken. Poult. Sci., 30: 435.
Falconer, D. S., 1960. Introduction to Quantitative Genetics. Oliver & Boyd, Ltd., Edinburgh.
Farnsworth, G. M., & Nordskog, A. W., 1955. Estimates of genetic parameters influencing blood spots and other economic traits of the fowl. Poult. Sci., 34: 1192 (Soc. Proc).
Goodman, B. L., & Godfrey, G. F., 1956. Heritability of body weight in the domestic fowl. Poult. Sci., 35: 50.
Gowe, R. S., Johnson, A. S., Crawford, R. D., Downs, J. H., Hill, A. T., Mountain, W. F., Pelletier, J. R., & Strain, J. H., 1960. Restricted versus full-feeding during the growing period for egg production stock. Brit. Poult. Sci., 1: 37.
Hale, R. W., 1952. Experimental errors in laying experiments. J. agric. Sci., 42: 347.
Hale, R. W., 1954. Heritability of chick viability in a White Wyandotte flock. J. agric. Sci., 44: 221.
Hale, R. W., 1959a. Heritability of laying-house viability in a White Wyandotte flock. Poult. Sci., 38: 471.
Hale, R. W., 1959b. Absence of pen effects in laying experiments on a semi-intensive plant. Poult. Sci., 38: 739 (Research note).
Hazel, L. N., & Lamoreux, W. F., 1947. Heritability, maternal effects and nicking in relation to sexual maturity and body weight in White Leghorns. Poult. Sci., 26: 508.
Hicks, A. F., 1958. Heritability and correlation analyses of egg weight, egg shape and egg number in chickens. Poult. Sci., 37: 967.
HogsettM., L. M., L. & Nordskog, A. W., 1958. Genetic-economic value in selecting for egg production rate, body weight and egg weight. Poult. Sci., 37: 1404.
Jerome, F. N., Henderson, C. R., & KingS., C S., C, 1956. Heritabilities, gene interactions, and correlations associated with certain traits in the domestic fowl. Poult. Sci., 35: 995.
King, S. C., & Henderson, C. R., 1954. Variance components analysis in heritability studies. Poult. Sci., 33: 147.
Kreuger, W. F., Dickerson, G. E., Kinder, Q. B., & Kempster, H. L., 1952. The genetic and environmental relationship of total egg production to its components and to body weight in the fowl. Poult. Sci., 31: 922 (Soc. Proc).
Lerner, I. M., 1950. Population Genetics and Animal Improvement. Cambridge University Press.
Lerner, I. M., 1958. The Genetic Basis of Selection. John Wiley & Sons, Inc., New York.
Lerner, I. M., & Cruden, D., 1951. The heritability of egg weight: the advantages of mass selection and of early measurements. Poult. Sci., 30: 34.
Nordskog, A. W., 1960. Importance of egg size and other factors in determining net income in random sample tests. Poult. Sci., 39: 327.
Osborne, R., 1954. Sex-linked association of egg weight and body weight in Brown Leghorns. Proc. Roy. Soc. Edin. (B), 65: 317.
Osborne, R., & PatersonW., S. B. W., S. B., 1952. On the sampling variance of heritability estimates derived from variance analyses. Proc. Roy. Soc. Edin. (B), 64: 456.
Peeler, R. J., Glazener, E. W., & BLOW, W. L., 1955. The heritability of broiler weight and age at sexual maturity and the genetic and environmental correlations between these traits. Poult. Sci., 34: 420.
Robertson, A., 1959. The sampling variance of the genetic correlation coefficient. Biometrics, 15: 469.
Saeki, Y., & Katsuragi, T., 1957. (Several factors affecting egg size, especially interrelationship between egg weight and some economic traits) Bull. nat. Inst. agric. Sci. (Chiba), G, No. 13: 35. (Anim. Breed. Abst., 26, No. 1607).
Siegel, P. B., & Essary, E. O., 1959. Heritabilities and interrelationships of live measurements and eviscerated weight in broilers. Poult. Sci., 38: 530.
Snedecor, G. W., 1956. Statistical Methods. Iowa State College Press, Ames, la.5th ed.
Thomas, C. H., Blow, W. L., Cockerham, C. C., & Glazener, E. W., 1958. The heritability of body weight, gain, feed consumption and feed conversion in broilers. Poult. Sci., 37: 862.
Wyatt, A. J., 1954. Genetic variation and covariation in egg production and other economic traits in chickens. Poult. Sci., 33: 1266.

Heritabilities and genetic correlations of egg production and other characters in a White Wyandotte flock

  • R. W. Hale (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed