Search Results - "Johnson, R. K."

Exceptional continental record of biotic recovery after the Cretaceous-Paleogene mass extinction by Lyson, T R, Miller, I M, Bercovici, A D, Weissenburger, K, Fuentes, A J, Clyde, W C, Hagadorn, J W, Butrim, M J, Johnson, K R, Fleming, R F, Barclay, R S, Maccracken, S A, Lloyd, B, Wilson, G P, Krause, D W, Chester, S G B

“…We report a time-calibrated stratigraphic section in Colorado that contains unusually complete fossils of mammals, reptiles, and plants and elucidates the…”
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Interannual controls on oxygen isotope variability in Asian monsoon precipitation and implications for paleoclimate reconstructions by Yang, H., Johnson, K. R., Griffiths, M. L., Yoshimura, K.

“…Orbital to millennial‐scale variations in Asian monsoon speleothem δ18O have been widely interpreted as records of monsoon intensity and/or rainfall amount. To…”
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Links between the East Asian monsoon and North Atlantic climate during the 8,200 year event by Liu, Y-H., Henderson, G. M., Hu, C-Y., Mason, A. J., Charnley, N., Johnson, K. R., Xie, S-C.

“…A period of cooling in the North Atlantic region 8,200 years ago affected climate throughout the Northern Hemisphere. A speleothem record from central China…”
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Local hydroclimate alters interpretation of speleothem δ18O records by Patterson, E. W., Skiba, V., Wolf, A., Griffiths, M. L., McGee, D., Bùi, T. N., Trần, M. X., Đinh, T. H., Đỗ-Trọng, Q., Goldsmith, G. R., Ersek, V., Johnson, K. R.

“…Oxygen isotopes ( δ 18 O) are the most commonly utilized speleothem proxy and have provided many foundational records of paleoclimate. Thus, understanding…”
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Full-term development of mice from enucleated oocytes injected with cumulus cell nuclei by Yanagimachi, R, Wakayama, T, Perry, A. C. F, Zuccotti, M, Johnson, K. R

“…Until recently, fertilization was the only way to produce viable mammalian offspring, a process implicitly involving male and female gametes. However,…”
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Littoral macroinvertebrate communities: spatial scale and ecological relationships by Johnson, R. K., Goedkoop, W.

“…SUMMARY 1. Spatial correlations between ecological patterns and processes are thought to be scale‐dependent, yet surprisingly few studies have evaluated the…”
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Effects of restricting energy during the gilt developmental period on growth and reproduction of lines differing in lean growth rate: Responses in feed intake, growth, and age at puberty by MILLER, P. S, MORENO, R, JOHNSON, R. K

“…The overall objective was to compare reproductive performance through 4 parities of gilts developed with ad libitum access to feed or with restriction of…”
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Differential immunity in pigs with high and low responses to porcine reproductive and respiratory syndrome virus infection by Petry, D.B, Lunney, J, Boyd, P, Kuhar, D, Blankenship, E, Johnson, R.K

“…One hundred Hampshire x Duroc cross-bred pigs (HD) and 100 NE Index line (I) pigs were infected with porcine reproductive and respiratory syndrome (PRRS) virus…”
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Assessment of hearing in 80 inbred strains of mice by ABR threshold analyses by Zheng, Qing Yin, Johnson, Kenneth R., Erway, Lawrence C.

“…The common occurrence of hearing loss in both humans and mice, and the anatomical and functional similarities of their inner ears, attest to the potential of…”
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genome scan for quantitative trait loci and imprinted regions affecting reproduction in pigs by Holl, J.W, Cassady, J.P, Pomp, D, Johnson, R.K

“…Quantitative trait loci for reproductive traits in a three-generation resource population of a cross between low-indexing pigs from a control line and…”
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Factors associated with sow stayability in 6 genotypes by Knauer, M, Stalder, K.J, Serenius, T, Baas, T.J, Berger, P.J, Karriker, L, Goodwin, R.N, Johnson, R.K, Mabry, J.W, Miller, R.K, Robison, O.W, Tokach, M.D

“…The purpose of this study was to determine the association of production factors with stayability to parity 4 (STAY4) under controlled experimental conditions…”
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Identification of quantitative trait loci affecting reproduction in pigs by Cassady, J. P, Johnson, R. K, Pomp, D, Rohrer, G. A, Van Vleck, L. D, Spiegel, E. K, Gilson, K. M

“…The objective of this research was to identify chromosomal regions harboring QTL affecting reproduction in pigs. A three-generation resource population was…”
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Candidate gene analysis for loci affecting litter size and ovulation rate in swine by Linville, R. C, Pomp, D, Johnson, R. K, Rothschild, M. F

“…A candidate gene approach was used to determine whether specific loci explain responses in ovulation rate (OR) and number of fully formed (FF), live (NBA),…”
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Biological responses to porcine respiratory and reproductive syndrome virus in pigs of two genetic populations by Petry, D. B, Holl, J. W, Weber, J. S, Doster, A. R, Osorio, F. A, Johnson, R. K

“…One hundred pigs from the NE Index Line (NEI) and 100 Hampshire-Duroc cross pigs (HD) were inoculated intranasally with porcine respiratory and reproductive…”
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Estimation of genetic parameters for average daily gain using models with competition effects by Chen, C.Y, Kachman, S.D, Johnson, R.K, Newman, S, Van Vleck, L.D

“…Components of variance for ADG with models including competition effects were estimated from data provided by the Pig Improvement Company on 11,235 pigs from 4…”
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Effect of pen mates on growth, backfat depth, and longissimus muscle area of swine by Hsu, W.L, Johnson, R.K, Van Vleck, L.D

“…Records on final BW (kg), backfat depth (cm), and LM area (cm²) of pigs from a University of Nebraska Large White/Landrace composite population were analyzed…”
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Responses in ovulation rate, embryonal survival, and litter traits in swine to 14 generations of selection to increase litter size by Johnson, R.K, Nielsen, M.K, Casey, D.S

“…Eleven generations of selection for increased index of ovulation rate and embryonal survival rate, followed by three generations of selection for litter size,…”
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Differential expression in lung and bronchial lymph node of pigs with high and low responses to infection with porcine reproductive and respiratory syndrome virus by Bates, J.S, Petry, D.B, Eudy, J, Bough, L, Johnson, R.K

“…One hundred Hampshire x Duroc cross-bred pigs and 100 Nebraska Index line pigs were infected with porcine reproductive and respiratory syndrome virus (PRRSV)…”
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Mouse models of USH1C and DFNB18: phenotypic and molecular analyses of two new spontaneous mutations of the Ush1c gene by Johnson, Kenneth R., Gagnon, Leona H., Webb, Lisa S., Peters, Luanne L., Hawes, Norman L., Chang, Bo, Zheng, Qing Yin

“…We mapped two new recessive mutations causing circling behavior and deafness to the same region on chromosome 7 and showed they are allelic by complementation…”
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National Pork Producers Council Maternal Line National Genetic Evaluation Program: A comparison of sow longevity and trait associations with sow longevity by Serenius, T, Stalder, K.J, Baas, T.J, Mabry, J.W, Goodwin, R.N, Johnson, R.K, Robison, O.W, Tokach, M, Miller, R.K

“…Data from the National Pork Producers Council Maternal Line National Genetic Evaluation Program were used to compare longevity of sows from 6 commercial…”
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