Ten Generations of Selection for Lysine Utilization in Japanese Quail

Godfrey, Edward F.

doi:10.3382/ps.0471559

Cited by 11 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This finding is in contrast to selection results with chickens (Siegel, 1962), and turkeys Johnson and Gowe, 1962) where estimated and realized heritabilities for early growth were in the range of 0.3 to 0.6. Our findings are similar to those of Godfrey (1968) in quail for early growth rate, who obtained population estimates of heritability between 0.25 and 0.35, and realized estimates of heritability near zero. But they are in contrast to estimates of heritability in quail obtained from regression, from intraclass correlation and from realized heritabilities (Yoshida, 1967;Marks and Lepore, 1968;Sittmann et al, 1966) which were all above 0.3.…”

Section: Discussionsupporting

confidence: 91%

Mass Selection for Body Weight in Quail

1970

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 91%

Mass Selection for Body Weight in Quail

1970

View full text Add to dashboard Cite

“…Many heritability estimates of body weight are available for chickens (Kinney, 1969) and values are becoming available for Japanese quail (Collins et al, 1968;Godfrey, 1968;Marks and Lepore, 1968). The genetic control of body weight might be expected to vary with age, as growth is age dependent.…”

Section: Introductionmentioning

confidence: 98%

Inheritance of Body Weight in Japanese Quail

Sefton

Siegel

1974

Poultry Science

View full text Add to dashboard Cite

Two generations of Japanese quail were weighed in order to estimate genetic parameters of body weight throughout the growth phase of the life cycle. Sexual dimorphism became evident at the age of sexual maturity. This was due to an acceleration of weight gains by females just prior to laying their first egg. Body weight at 1 day of age reflected a large maternal influence which rapidly declined with age. Unrealistic estimates of the heritability of female body weight were obtained at the time of sexual maturity. At other ages heritability estimates of body weight were generally moderate to high. All phenotypic correlations between weights at various ages were positive, with the magnitude generally decreasing as the interval between weighings increased. Genotypic correlations were larger and followed the same general trends as phenotypic correlations with certain exception, namely when one of the ages was day 1 and when the ages involved maturity of females.

show abstract

“…Realized heritability estimates for four week weight were comparable to estimates obtained by other methods. Godfrey (1968) estimated the heritability of percentage growth rate from two to four weeks of age, based on sire variance components, to be .36 for a selected line and .26 for a randombred control after ten generations of selection. Narayan (1976) estimated the heritability of rate of gain from two to five weeks of age to be .06, based on full sib correlations.…”

Section: Introductionmentioning

confidence: 99%

Inheritance of Egg Production, Egg Weight, Body Weight and Certain Plasma Constituents in Coturnix

1978

View full text Add to dashboard Cite

In females from a randombred line of Coturnix, egg weight and 70 day egg production were estimated to be of moderate (.20 to .40) to high (greater than .40) heritability, but were influenced greatly by maternal and/or nonadditive genetic effects. Estimates of the heritability of body weight at sexual maturity were low (less than .20) from the paternal half-sister correlation, but greater than 1.0 from the maternal half-sister correlation. Plasma concentrations of a lipophosphoprotein complex (LPP) and total calcium were estimated to be of low heritability, while plasma total phosphorus concentration was moderately heritable.Plasma LPP, total calcium and total phosphorus concentrations were positively correlated genetically and phenotypically with each other and negatively correlated genetically with egg production. The phenotypic correlations between the plasma constituents and egg production were not significant. Body weight was negatively correlated genetically with plasma LPP and egg production but positively correlated with plasma total phosphorus. Calculations of correlated responses to selection indicated that selection for decreased plasma LPP concentration might improve egg production without depressing body weight.The average plasma LPP concentration was 11.5 ± .6 mg./ml. Total plasma calcium concentration (19.4 ± .2 mg.%) was similar to that reported for chickens and turkeys, while total plasma phosphorus concentration (799 ± 8 Mg./ml.) was higher than reports for other avian species.Several estimates of the heritability of body weight in Coturnix have been published, while 1 at

show abstract

Ten Generations of Selection for Lysine Utilization in Japanese Quail

Cited by 11 publications

References 15 publications

Mass Selection for Body Weight in Quail

Mass Selection for Body Weight in Quail

Inheritance of Body Weight in Japanese Quail

Inheritance of Egg Production, Egg Weight, Body Weight and Certain Plasma Constituents in Coturnix

Contact Info

Product

Resources

About