Heritability of All-or-None Traits: Hatchability and Resistance to Death to Ten Weeks of Age

Brunson, C. C.; Godfrey, George F.; Goodman, B. L.

doi:10.3382/ps.0350516

Cited by 5 publications

(8 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The heritability estimates presented in Tables 2, 3 and 4 are similar to the ones obtained for viability of chickens during the early growing period (Wilson, 1948;Morris, 1959;Hale, 1954;and Brunson et al, 1956).…”

Section: Resultssupporting

confidence: 57%

“…The estimates based on levels of mortality greater than 10 percent were higher than corresponding estimates in chickens. However, since the estimates were based on the differences between full sib families, maternal effects may have been important (Hale, 1954: Moultrie et al, 1953Brunson et al, 1956;Dickerson, 1957;and Morris, 1959). The linear regression coefficients of heritability estimates on mortality level were .011 and .020 for the medium weight and large weight strains, respectively.…”

Section: Resultsmentioning

confidence: 98%

“…The estimates were low, ranging from 0 to .05. Brunson et al (1956) obtained a higher estimate of . 16 while Dickerson (1957) observed a lower estimate of .02 for livability to 10 weeks of age.…”

Section: Introductionmentioning

confidence: 92%

See 2 more Smart Citations

Heritability of Viability During the Early Growing Period of Turkeys

1973

View full text Add to dashboard Cite

Heritability estimates of viability of turkeys from 0 to 4 weeks of age averaged .080 ± .014 with a confidence interval (P < .01) of .044 to .094. Estimates of viability during cold stress and collection of blood at four weeks of age averaged .002 ± .012 with a confidence interval (P < .01) of -.028 to .032. The heritability estimate for viability from 0 to 8 weeks of age in several lines of medium weight and large weight turkeys was .117 ± .008 with a confidence interval (P < .01) of .096 to .138. Heritability estimates of the medium weight strains (.130 ± .010) averaged slightly higher than that of large weight strains (.096 ± .012). The magnitude of the heritability estimates increased with increases in mortality.

show abstract

Section: Resultssupporting

confidence: 57%

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Heritability of Viability During the Early Growing Period of Turkeys

1973

View full text Add to dashboard Cite

show abstract

“…Hale reported errors of considerably lesser magnitude but it would appear that these are errors of the intra-class correlations and not of the heritabilities. The previously mentioned reports of Hale (1954) and Brunson et al (1956) disclose evidence for the presence of maternal effects. The magnitude of the maternal influence is generally gauged by the extent to which the component of variance "between dams within sires" is in excess of the analogous component "between sires."…”

Section: Resultsmentioning

confidence: 85%

“…Hale (1954), using records of a White Wyandotte flock collected for a period of six years, estimated heritability for the period up to 8 weeks as 7.4 percent (betweens sires) and 14.3 percent (between dams). Brunson et al (1956) have used the period from hatching date to 10 weeks of age to provide their average figure of 5 percent based on two breeds and their reciprocal crosses. More recently, Dickerson (1957) obtained estimates of 2 percent and 13 percent respectively, from paternal halfsib and.…”

Section: Introductionmentioning

confidence: 99%