Search Results - "Gregory, K.E"

Efficient GFP expression in the mushrooms Agaricus bisporus and Coprinus cinereus requires introns by Burns, C., Gregory, K.E., Kirby, M., Cheung, M.K., Riquelme, M., Elliott, T.J., Challen, M.P., Bailey, A., Foster, G.D.

“…We have developed a “Molecular Toolkit” comprising interchangeable promoters and marker genes to facilitate transformation of homobasidiomycete mushrooms. We…”
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Increased calf production in cattle selected for twin ovulations by Echternkamp, S.E, Thallman, R.M, Cushman, R.A, Allan, M.F, Gregory, K.E

“…The effects of increasing fetal numbers and their distribution between the left and right uterine horns on calf survival, calf BW at birth and weaning,…”
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Effects of ovulation rate and fetal number on fertility in twin-producing cattle by Echternkamp, S.E, Cushman, R.A, Allan, M.F, Thallman, R.M, Gregory, K.E

“…Effects of ovulation rate and of fetal number and distribution within the uterus on pregnancy rate and fetal survival were evaluated in nulliparous (n = 1,331)…”
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Genetic parameters for six measures of length of productive life and three measures of lifetime production by 6 yr after first calving for Hereford cows by Martinez, G.E, Koch, R.M, Cundiff, L.V, Gregory, K.E, Van Vleck, L.D

“…Genetic parameters for length of productive life given the opportunity (LPL/O), measured as days between first calving and disposal conditioned on one of six…”
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Bayesian analysis of twinning and ovulation rates using a multiple-trait threshold model and Gibbs sampling by Van Tassell, C.P, Van Vleck, L.D, Gregory, K.E

“…The Multiple-Trait Gibbs Sampler for Animal Models programs were extended to allow analysis of ordered categorical data using a Bayesian threshold model. The…”
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Genetic response to selection for weaning weight or yearling weight or yearling weight and muscle score in Hereford cattle: Efficiency of gain, growth, and carcass characteristics by Koch, R.M, Cundiff, L.V, Gregory, K.E, Van Vleck, L.D

“…An experiment involving crosses among selection and control lines was conducted to partition direct and maternal additive genetic response to 20 yr of…”
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Estimation of direct, maternal, and grandmaternal genetic effects for weaning weight in several breeds of beef cattle by Dodenhoff, J, Van Vleck, L.D, Gregory, K.E

“…Weaning weights from nine parental breeds and three composites were analyzed to estimate variance due to grandmaternal genetic effects and to compare estimates…”
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Heritabilities and phenotypic and genetic correlations for bovine postrigor calpastatin activity, intramuscular fat content, Warner-Bratzler shear force, retail product yield, and growth rate by Shackelford, S.D, Koohmaraie, M, Cundiff, L.V, Gregory, K.E, Rohrer, G.A, Savell, J.W

“…To estimate the heritability (h2) of postrigor calpastatin activity (CA), 555 steers were reared and processed conventionally. Breed-types included purebreds…”
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Number of calves born, number of calves weaned, and cumulative weaning weight as measures of lifetime production for Hereford cows by Martinez, G.E, Koch, R.M, Cundiff, L.V, Gregory, K.E, Van Vleck, L.D

“…Genetic parameters for lifetime production for cows with the opportunity to produce from 2 through 7 yr of age, as measured by the number of calves born (NB2,…”
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Genetic and phenotypic (co)variances for growth and carcass traits of purebred and composite populations of beef cattle by Gregory, K.E. (Roman L. Hruska U.S. Meat Animal Research Center, ARS, USDA, Clay Center, NE.), Cundiff, L.V, Koch, R.M

“…Least squares means, genetic (sigma g), and phenotypic (erp) standard deviations, and phenotypic coefficients of variation (CV) were estimated on an…”
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Concentrations of insulin-like growth factor-I in blood and ovarian follicular fluid of cattle selected for twins by Echternkamp, S E, Spicer, L J, Gregory, K E, Canning, S F, Hammond, J M

“…Recent studies have implicated insulin-like growth factor I (IGF-I) as an intraovarian regulator of follicular growth and differentiation. Therefore, we…”
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Germplasm evaluation in beef cattle--cycle IV: postweaning growth and puberty of heifers by Thallman, R.M, Cundiff, L.V, Gregory, K.E, Koch, R.M

“…Postweaning growth, puberty, and pregnancy traits were evaluated for 783 F(1) heifers sired by Angus, Hereford, Charolais, Shorthorn, Galloway, Longhorn,…”
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Effects of twinning on dystocia, calf survival, calf growth, carcass traits, and cow productivity by Gregory, K.E. (Roman L. Hruska U.S. Meat Animal Research Center, ARS, USDA, Clay Center, NE.), Echternkamp, S.E, Cundiff, L.V

“…This paper reports results from a long-term experiment with a primary objective to increase twinning rate in cattle at the Roman L. Hruska U.S. Meat Animal…”
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Germplasm evaluation in beef cattle-cycle IV: birth and weaning traits by Cundiff, L.V, Gregory, K.E, Koch, R.M

“…Gestation length, unassisted calving percentage, perinatal mortality, calf crop weaned (survival from birth to weaning), birth weight, and 200-d weaning weight…”
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Genetic (Co) variances among birth weight, 200-day weight, and postweaning gain in composites and parental breeds of beef cattle by Bennett, G.L. (USDA, ARS, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, NE.), Gregory, K.E

“…Genetic and environmental (co)variances for birth weight, adjusted 200-d weight, and postweaning gain were estimated in nine parental and three composite…”
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Breed effects, retained heterosis, and estimates of genetic and phenotypic parameters for carcass and meat traits of beef cattle by Gregory, K. E, Cundiff, L. V, Koch, R. M, Dikeman, M. E, Koohmaraie, M

“…Retained heterosis for meat traits was estimated in F3 generation castrate males in three composite populations of beef cattle finished on two levels of…”
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Breed effects and retained heterosis for growth, carcass, and meat traits in advanced generations of composite populations of beef cattle by Gregory, K.E, Cundiff, L.V, Koch, R.M, Dikeman, M.E, Koohmaraie, M

“…Retained heterosis for growth, carcass, and meat traits was estimated in F3 generation castrate male progeny in three composite populations finished on two…”
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Multiple-trait restricted maximum likelihood for stimualted mesasures of ovulation rate with underlying multivariate normal distributions by Van Vleck, L.D, Gregory, K.E

“…A data set that was used to estimate covariance components with REML for an animal model with eight measures of ovulation rate treated as separate traits was…”
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Genetic and phenotypic (co)variances for production traits of female populations of purebred and composite beef cattle by Gregory, K. E, Cundiff, L. V, Koch, R. M

“…Least squares means, genetic and phenotypic standard deviations, and phenotypic coefficients of variation were estimated for growth, size, condition score, age…”
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Genetic trend and environmental effects in a population of cattle selected for twinning by Van Vleck, L.D. (Roman L. Hruska U.S. Meat Animal Research Center, USDA, ARS, Lincoln, NE.), Gregory, K.E

“…A selection experiment was established in 1981 to increase twinning rate in cattle. Results reported are through 1993 calf crops. Estimates of genetic…”
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