Types of Gene Action in the Inheritance of Ten-Week Body Weight and Breast Angle in Broilers

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

doi:10.3382/ps.0350524

Cited by 20 publications

(8 citation statements)

References 6 publications

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“…The Oklahoma Station strain of New Hampshires (NH) and Silver Oklabars (SB) were used in this experiment, the design of which has been previously discussed (Brunson et al, 1956). The hatchability data were collected on the parents rather than the first generation progeny.…”

Section: Methodsmentioning

confidence: 99%

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

1956

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Section: Methodsmentioning

confidence: 99%

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

1956

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“…As estimates of heritability were generally different for males and females, it is possible that sexlinked effects are operating for this trait as well. Reports by Brunson et al, (1956) and Thomas et al (1958) suggest that sex-linked genes may be of considerable importance in the inheritance of body weight traits for chickens. Table 4 presents body weights, hatchability, and liveability rates determined for the genetic lines in Generation 3.…”

Section: Resultsmentioning

confidence: 98%

Response to Divergent Selection for Early Growth of Chickens Fed a Diet Deficient in Selenium

et al. 1987

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Three generations of divergent selection for 21-day growth response to a diet deficient in selenium (-Se) were bred using a meat-type chicken. The Athens-Canadian Randombred (AC) population of chickens served as the base population for this study. Mass selection was used to establish a -Se refractory line (SDR) and a -Se susceptible line (SDS). A genetic control line was maintained during the selection process to facilitate evaluation of the responses of the selected lines. The SDR males and females had an average of 17% increase in weight gain at 21 days of age when fed the -Se diet compared with the control line males and females fed the same diet for the three generations of selection. The SDS line had an average reduction in weight gain of 27% during the same period of selection. A difference of 25 g was observed between the mean body weights of SDR males and females and between the SDS males and females after one generation of selection. By the third generation of selection, the difference between SDR and SDS males had increased to 31 g, whereas the SDR and SDS females differed by 41 g. Early response to selection was asymmetrical because the response was greater in the SDS than in the SDR line. Response to selection, however, generally declined after the first generation. Realized heritability estimates for individual generations for this trait were variable (ranging from -.26 to .95), but cumulative estimates (.15 to .39) for growth through three generations were similar to those reported for chickens and quail.(ABSTRACT TRUNCATED AT 250 WORDS)

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“…Brunson et al (1956) studying body weight and breast angle on ten-week broilers involving two breeds and Goodman et al (1956) studying eight-week body weight on two strains of broilers, concluded that non-additive genetic variance, as measured by the sire X dam interaction component, was either small or non-existent in these traits mentioned. On the other hand, Jerome et al (1956) found an exceptionally high proportion of variance due to dominance deviations in first year egg production and considerable dominance in mature body weight and first four months of egg production.…”

mentioning

confidence: 96%

“…Recently, a number of investigations were devoted to the study of non-additive gene effects in quantitative traits of poultry (Brunson et al, 1956;Jerome et al, 1956;and Goodman et al, 1957). Brunson et al (1956) studying body weight and breast angle on ten-week broilers involving two breeds and Goodman et al (1956) studying eight-week body weight on two strains of broilers, concluded that non-additive genetic variance, as measured by the sire X dam interaction component, was either small or non-existent in these traits mentioned.…”

mentioning

confidence: 99%

Non-Additive Gene Effects of Six Broiler Traits as Studied from a Series of Diallel Matings ,

1959

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Types of Gene Action in the Inheritance of Ten-Week Body Weight and Breast Angle in Broilers

Cited by 20 publications

References 6 publications

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

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

Response to Divergent Selection for Early Growth of Chickens Fed a Diet Deficient in Selenium

Non-Additive Gene Effects of Six Broiler Traits as Studied from a Series of Diallel Matings ,

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