Genetic-Economic Value in Selecting for Egg Production Rate, Body Weight and Egg Weight

Hogsett, Melvin Lee; Nordskog, A. W.

doi:10.3382/ps.0371404

Cited by 40 publications

(20 citation statements)

References 33 publications

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“…Similar evidence for sex-linked effects on egg weight was reported by Osborne (1953Osborne ( , 1954, Wyatt (1954), Hogsett and Nordskog (1958), Hicks (1958), King (1961), Goodman and Jaap (1961), Redman andShoffner (1961), andVan Vleck e_t al. (1963).…”

Section: Body Weightsupporting

confidence: 73%

“…Hale (1961), Hale and Clayton (1965), and Saadeh (1967) also reported larger heritabilities for sire components than dam or full sib components. Lerner (1945) Wyatt (1954), Hogsett andNordskog (1958), andJaap (1961) reported larger sire than dam components of variance.…”

Section: Sex-linkage Of Quantitative Traitsmentioning

confidence: 91%

“…Sex-linked effects have also bean inferred from analyses of variance showing larger sire than dam components of variance in 8 to 10 week body weights (Thomas aj^., 1958;Goodman and Godfrey, 1956;and Saadeh, 1967) and adult body weights (Jerome et, a^., 1956;Hogsett and Nordskog, 1958;King, 1961;Jaffe, 1966;Clayton and Robertson, 1966;and Saadeh, 1967). Even though large sampling errors may have accounted for part of the differences between sire and dam component of variance estimates, the consistency of the reports suggests that more than chance variation determined the differences.…”

Section: Body Weightmentioning

confidence: 99%

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Influence of sex chromosomes and maternal effects on production traits in the fowl

Briggs

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Section: Body Weightsupporting

confidence: 73%

Section: Sex-linkage Of Quantitative Traitsmentioning

confidence: 91%

Section: Body Weightmentioning

confidence: 99%

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Influence of sex chromosomes and maternal effects on production traits in the fowl

Briggs

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“…Wilton et al (1968) extended Hazel's (1943) linear theory to a quadratic selection index for a quadratic objective. Hogesett and Nordskog (1958) presented a procedure to calculate the economic weights of the traits in farm animals from a direct market and farm price analysis. They defined the economic value of a trait as the amount of profit gained for every unit increase in that trait.…”

Section: Smithmentioning

confidence: 99%

Development of the Relative Economic Weights for Linear and Quadratic Bioeconomic Objectives in Commercial Broilers

1986

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The approach of Harris (1970) and Harris et al. (1984) was used to develop mathematical profit functions for describing the bioeconomic objectives in an integrated three-way cross commercial broiler production system. The reproductive and productive performances of the pureline maternal grandparent female and the single cross female parent were included to reflect the impact of the traits expressed in those populations. The resulting complex function was approximated with linear and quadratic equations. Inputs (costs) in the system included feed, housing, labor and facilities, and processing. Outputs (returns) included salvage value of the cull hens and the processed cut-up broilers. A systematic procedure was developed to calculate relative economic values of the traits in the breeding objective from the bioeconomic function. The traits were boiler livability, boiler weight, proportion of carcass, proportion of breast-thigh-leg, broiler feed consumption, grower livability, layer livability, rate of lay, settability, fertility, and hatchability. The relative economic values thus obtained were 1.51, 1. 00, 5.99, 3.21, -.20, 0, 0, 0, 0, 0, and 0 in paternal grandparent; 4.48, 1.00, 5.99, 3.21, -.20, 3.00, 3.10, 4.58, 2.97, 3.04 and 3.04 in maternal great-grandparent male; and 9.30, 1. 00, 5.99, 3.21, -.20, 7.88, 8.15, 12.06, 7.80, 7.97, and 7.97 in maternal great-grandparent female, for the traits in the above order.

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“…Sex-linkage has been demonstrated by a large sire component of variance (Jerome et aJL. 1956, Hogsett and Nordskog, 1958, and Redman and Shoffner, 1961. In con trast, King (1961) reported a large dam component which he interpreted as evidence of maternal effects.…”

Section: Egg Weightmentioning

confidence: 99%

Weighted least squares estimates of genetic parameters in chickens

Silva

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Genetic-Economic Value in Selecting for Egg Production Rate, Body Weight and Egg Weight

Cited by 40 publications

References 33 publications

Influence of sex chromosomes and maternal effects on production traits in the fowl

Influence of sex chromosomes and maternal effects on production traits in the fowl

Development of the Relative Economic Weights for Linear and Quadratic Bioeconomic Objectives in Commercial Broilers

Weighted least squares estimates of genetic parameters in chickens

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