R. Johnson

Effects of restricting energy during the gilt development period on growth and reproduction of lines differing in lean growth rate: Responses in reproductive performance and longevity.
20213 citationsauthor #1
Influencing prolificacy of sows by selection for physiological factors
202017 citationsauthor #1
Applying functional genomics research to the study of pig reproduction.
202017 citationsauthor #5
Species traits reveal effects of land use, season and habitat on the potential subsidy of stream invertebrates to terrestrial food webs
201829 citationsauthor #4
Species traits reveal effects of land use, season and habitat on the potential subsidy of stream invertebrates to terrestrial food webs
20180 citationsauthor #4
REDUCED NOCTURNAL TEMPERATURES FOR EARLY WEANED PIGS 1 , 2 ' 3
20170 citationsauthor #3
SELECTION AND FEED INTAKE RESTRICTION IN SWINE . I . EFFECT ON RATE AND COMPOSITION OF GROWTH 1
20170 citationsauthor #2
PRACTICES AND GENETIC AND PHENOTYPIC TRENDS ESTIMATED FROM NEBRASKA SPF SWINE FIELD
20170 citationsauthor #2
GENERALIZED LEAST-SQUARES MEANS FOR SURVIVAL RATE OF LITTERS FROM CROSSBRED FEMALES MATED TO PUREBED AND CROSSBRED BOARS
20170 citationsauthor #2
A REVIEW OF CROSSBREEDING IN SWINE 909
20170 citationsauthor #2
Long-term selection for litter size in swine results in shifts in allelic frequency in regions involved in reproductive processes.
201612 citationsauthor #4
Genomic analysis of the differential response to experimental infection with porcine circovirus 2b.
20149 citationsauthor #13
Genome-wide analysis of the differential response to experimental challenges with Porcine Circovirus 2 b
20140 citationsauthor #13
Long-term selection for litter size results in significant shifts in allelic frequency in regions involved in reproductive processes
20140 citationsauthor #4
EFFECTS OF LEVELS OF CRUDE PROTEIN ON PERFORMANCE OF GROWING BOARS
20130 citationsauthor #2
OXIDATION RATES OF MAJOR FATTY ACIDS IN FASTING N EONATAL PIGS 1 ' 2
20130 citationsauthor #6
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.
201132 citationsauthor #3
Swine BREEDING A Comparison of Mating Systems Utilizing Duroc , Hampshire and Yorkshire Breeds for Swine Production
20091 citationsauthor #2
SLA haplotype differences in lines of pigs which differ in ovulation rate.
200937 citationsauthor #3
Age and Weight at Puberty for Purebred and Crossbred Gilts
20092 citationsauthor #3
Relationship Between Pubertal and Growth Characteris tics in Gilts
20090 citationsauthor #3
ReproductionPhysiology Recovery of Normal Semen Quality after Heat Stress of Boars 1
20090 citationsauthor #4
Growth and Carcass Traits for Pigs Of Four Swine Breeds and Their Crosses
20090 citationsauthor #2
SWINE A Preliminary Comparison of the Productivity of Females of Duroc , Yorkshire , Landrace and Spot Breeding
20091 citationsauthor #1
Swine The Comparison of Three-Breed Cross And Backcross Swine For Litter Productivity And Feedlot Performance
20090 citationsauthor #2
National Pork Producers Council Maternal Line National Genetic Evaluation Program: a comparison of sow longevity and trait associations with sow longevity.
200669 citationsauthor #6
Investigation of PCB Release Rates from Selected Shipboard Solid Materials Under Laboratory-Simulated Shallow Ocean (Artificial Reef) Environments
20063 citationsauthor #3
Assessing the recovery of sublittoral macroinvertebrate communities of boreal lakes from the effects of acidic deposition and liming
20063 citationsauthor #1
Physical mapping of genes in the porcine ovarian transcriptome.
20055 citationsauthor #4
Follicular development and maturation in gilts selected for an index of high ovulation rate and high prenatal survival.
200514 citationsauthor #4
Drivers and organism groups: indication of different stressors in European rivers
20050 citationsauthor #2
Breeding and Genetics: Swine
20045 citationsauthor #21
Responses to 19 generations of litter size selection in the NE Index line. II. Growth and carcass responses estimated in pure line and crossbred litters.
200413 citationsauthor #3
Effects of sediment nutrients and depth on small-scale spatial heterogeneity of submersed macrophyte communities in Lake Pleasant, Pennsylvania
200415 citationsauthor #1
Evaluation of gene expression in pigs selected for enhanced reproduction using differential display PCR: II. Anterior pituitary.
200419 citationsauthor #3
Evaluation of procedures to predict fat-free lean in swine carcasses.
200433 citationsauthor #1
National Pork Producers Council Maternal Line Genetic Evaluation: a comparison of growth and carcass traits in terminal progeny.
200422 citationsauthor #3
Mapping of porcine ESTs obtained from the anterior pituitary.
200310 citationsauthor #2
Design and standards for genetic evaluation of swine seedstock populations.
20034 citationsauthor #4
Biological and economic responses in the NE Index line.
20020 citationsauthor #2
Candidate gene analysis for loci affecting litter size and ovulation rate in swine.
2001147 citationsauthor #3
Identification of quantitative trait loci affecting reproduction in pigs.
2001177 citationsauthor #2
Direct and correlated responses to two-stage selection for ovulation rate and number of fully formed pigs at birth in swine.
200165 citationsauthor #2
RIVPACS and alternative statistical modelling techniques: accuracy and soundness of principles.
200016 citationsauthor #1
The 1995 national survey of Swedish lakes and streams: assessment of ecological status using macroinvertebrates.
200016 citationsauthor #1
Comparison of plasma FSH concentration in boars and gilts from lines selected for ovulation rate and embryonal survival, and litter size and estimation of (co)variance components for FSH and ovulation rate.
200019 citationsauthor #2
Concentrations of gonadotropins, estradiol and progesterone in sows selected on an index of ovulation rate and embryo survival.
199822 citationsauthor #8
Biodiversity in Land–inland Water Ecotones, edited by J.-B. Lachavanne and R. Juge, Man and the Biosphere series, UNESCO, The Parthenon Publishing Group, Paris, 1997. 308 pp. price: 340 FF ISBN 1-85070-735-9.
19980 citationsauthor #1
A new species of Polyipnus (Teleostei: Stomiiformes) from the western Indian Ocean, with comments on sternoptychid ecology
19984 citationsauthor #3
Genetics of the interval from weaning to estrus in first-litter sows: correlated responses.
199823 citationsauthor #3
Microbial Response of a Freshwater Benthic Community to a Simulated Diatom Sedimentation Event: Interactive Effects of Benthic Fauna
199765 citationsauthor #3
Electrostatic-Enhanced Atomization for Spray Drying of Milk
19969 citationsauthor #1
Comparison of circulating concentrations of reproductive hormones in boars of lines selected for size of testes or number of ovulations and embryonal survival to concentrations in respective control lines.
199611 citationsauthor #9
Growth of testes and testicular morphology after eight generations of selection for increased predicted weight of testes at 150 days of age in boars.
199530 citationsauthor #3
Second thoughts on selection for components of reproduction in swine.
199415 citationsauthor #2
Effects of selection of data on estimates of breeding values by three methods for litter size, backfat, and average daily gain in swine.
19919 citationsauthor #2
Direct responses to selection for increased litter size, decreased age at puberty, or random selection following selection for ovulation rate in swine.
199188 citationsauthor #2
Alternative methods of selection for litter size in mice: I. Characterization of base population and development of methods.
199058 citationsauthor #3
Effects of errors in pedigree on three methods of estimating breeding value for litter size, backfat and average daily gain in swine.
199036 citationsauthor #2
Effect of castration on plasma luteinizing hormone in postpubertal boars.
19891 citationsauthor #3
Control of luteinizing hormone in postpubertal boars with large testes.
19894 citationsauthor #7
INDEX SELECTION FOR COMPONENTS OF LITTER SIZE IN SWINE: RESPONSE TO FIVE GENERATIONS OF SELECTION
198951 citationsauthor #2
Response to luteinizing hormone releasing hormone in postpubertal boars with large testes.
19896 citationsauthor #5
Pelagic biogeography : proceedings of an international conference The Netherlands, 29 May-5 June 1985
19883 citationsauthor #4
COMPARISON OF METHODS OF PREDICTING BREEDING VALUES OF SWINE
198825 citationsauthor #2
Effect of sex ratio of the birth litter on subsequent reproductive performance of gilts.
198824 citationsauthor #5
Correlated responses of carcass and reproductive traits to selection for rate of lean growth in swine.
198827 citationsauthor #2
Growth performance for four breeds of swine: crossbred females and purebred and crossbred boars.
198711 citationsauthor #3
Individual Heterosis and Breed Effects for Postweaning Performance and Carcass Traits in Four Breeds of Swine
198740 citationsauthor #3
Effect of level of protein and supplemental choline on reproductive performance of gilts fed sorghum diets.
19878 citationsauthor #2
Effect of unilateral hysterectomy and ovariectomy on puberty, uterine size and embryo development in swine.
198715 citationsauthor #2
Genetic parameter estimates for reproductive traits of male and female littermate swine.
198613 citationsauthor #3
Selection for components of litter size in swine: Genetic parameters and expected response.
198610 citationsauthor #2
Selection practices and genetic and phenotypic trends estimated from Nebraska SPF swine field records.
19856 citationsauthor #2
Sow productivity comparisons for four breeds of swine: purebred and crossbred litters.
198437 citationsauthor #4
Relationship between serum luteinizing hormone and estradiol in prepubertal boars.
19844 citationsauthor #3
Reproductive performance for four breeds of swine: crossbred females and purebred and crossbred boars.
198436 citationsauthor #2
Testicular development and endocrine characteristics of boars selected for either high or low testis size.
198446 citationsauthor #2
Relationships among measures of testicular development and endocrine function in boars.
198417 citationsauthor #2
Effect of castration on plasma luteinizing hormone concentrations in prepubertal boars.
198417 citationsauthor #3
Simulation of Breed and Crossbreeding Effects on Costs of Pork Production
198329 citationsauthor #4
Genetic and phenotypic parameters estimated from Nebraska specific-pathogen-free swine field records.
198315 citationsauthor #2
Reciprocal recurrent selection for 21-day litter weight of crossbred gilts. I. Selection applied and genetic change in reproduction of crossbred gilts.
19832 citationsauthor #4
Reciprocal recurrent selection for 21-day litter weight of crossbred gilts. II. Reproductive performance of purebred females producing purebred and two-way cross litters and performance of purebred and crossbred pigs.
19830 citationsauthor #4
Breed and heterosis effects on testicular development and endocrine function of puberal boars.
198344 citationsauthor #3
SIMULATION OF HETEROSIS EFFECTS ON COSTS OF PORK PRODUCTION
19837 citationsauthor #4
BREED COMPARISONS FOR AGE AND WEIGHT AT PUBERTY IN GILTS
198224 citationsauthor #3
Oxidation rates of major fatty acids in fasting neonatal pigs.
198216 citationsauthor #6
COMPARISONS OF MATING SYSTEMS WITH DUROC, HAMPSHIRE AND YORKSHIRE BREEDS OF SWINE FOR EFFICIENCY OF SWINE PRODUCTION
198114 citationsauthor #2
Comparison of three-breed and backcross swine for litter productivity and postweaning performance.
198117 citationsauthor #2
Genetic and Phenotypic Relationships between Pubertal and Growth Characteristics of Gilts
198144 citationsauthor #3
Effect of maternal dietary energy source on glucose homeostasis, liver glycogen and carcass lipid in the neonatal pig.
198115 citationsauthor #5
Testicular characteristics of purebred and two-breed cross boars of Duroc, Yorkshire, Landrace and Spot breeding.
19801 citationsauthor #3
The relationships between plasma progesterone and lh and the numbers of corpora lutea and embryos in purebred and crossbred gilts.
19807 citationsauthor #2
Adjustment of 21-day litter weight for number of pigs nursed for purebred and crossbred dams.
198014 citationsauthor #2
Efficiency of Gains and Carcass Characteristics of Swine of Two Degrees of Fatness Slaughtered at Three Weights
197924 citationsauthor #2
Reproductive Characteristics of Boars during and after Exposure to Increased Ambient Temperature
197965 citationsauthor #3
Studies on the Feasibility of Predicting Feedlot Performance from Certain Laboratory Grain Analyses
19782 citationsauthor #3
AN ANALYSIS OF THE DEPENDENCY STRUCTURE BETWEEN A GILT'S PREBREEDING AND REPRODUCTIVE TRAITS. II. PRINCIPAL COMPONENT ANALYSIS
19776 citationsauthor #2
AN ANALYSIS OF THE DEPENDENCY STRUCTURE BETWEEN A GILT'S PREBREEDING AND REPRODUCTIVE TRAITS. I. PHENOTYPIC AND GENETIC CORRELATIONS
197727 citationsauthor #2

PROFILE

PAPERS

TIMELINE

COAUTHOR MAP

CONCEPT FOOTPRINT