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Showing 1 to 20 of 20 for “"Selection Index"”.
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Beef on dairy economic selection index
… of this study was to create an economic selection index for a beef on dairy crossbreeding system. In an effort to improve overall performance in the system, the index aims to increase profitability. Crossbreeding a beef bull with a dairy female aims to add value to the resulting calf …
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Estimation of economic weights for a beef cattle selection index
A deterministic beef cattle computer simulation was used to estimate effect of genetic change in mature size (WMA), maximum daily milk production (PMA) and 60-d conception rate (CP) on costs per 100 kg slaughter weight (COST) and costs per 100 kg weaned weight (WNCOST) both adjusted for cull cow …
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Effect of sire line and selection index category on pig growth performance from weaning to harvest and carcass characteristics
… was to compare 3 sire lines and the effect of selection index category within sire line on growth performance (from 6.1 ± 0.29 to 129.8 ± 2.16 kg BW) and carcass characteristics of pigs under commercial conditions. A randomized complete block design (blocking factor being day of start on test) …
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Germination and Seedling Growth of Wheat Under Simulated Drought Conditions as a Selection Index for Performance Under Moisture-Stress Conditions
Made available in DSpace on 2014-12-12T00:18:01Z (GMT). No. of bitstreams: 1 7414617.pdf: 3019634 bytes, checksum: 8d97dc0ac33f8c32d7449cdd0880d07c (MD5) Previous issue date: 1974
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Development of a pre-selection index for cider apple (Malus x domestica Borkh.) genotypes by phenotyping a low-chill requiring red-fleshed breeding progeny
… of Type 1 red-fleshed apples, allowing the selection and planting of only red-fleshed genotypes. These selected genotypes with red foliage were grafted onto M.7 rootstocks and planted in a low-chill environment. Since traditional breeding processes are time-consuming, the phenotypic …
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Assessment of farmer preferences, constraints and angro-morphological variation among Bambara groundnut (Vigna subterranea (L.) Verdc.) accessions as a basis for seed yield selection index
… pod colour, and pod texture. The Shanon Weiner Index showed high diversity, with an average value of 0.92. Also, a dendrogram indicated five clusters of similarity. Quantitative data were analysed using multiple analysis of variance, Pearson correlation moment, Principal Component Analysis …
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Abandonment or Inclusion of Race in Higher Education Admissions: A Case Study of Consequences
… excluding African Americans) across Campus Selection Index, ACT-C and High School Percentile Rank (HSPR) for the 1978, 1985 and 1995 cohorts. A difference in each of the means was found to be significant at the .05 level. Examination of the data revealed that the mean Campus Selection Index …
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Accelerated breeding for winter wheat profitability in a wheat-soybean double-crop system
… genetic trend for key traits over two decades of selection in the University of Illinois breeding program? Second, can an optimal genomic selection index improve expected economic return relative to single-trait strategies? Third, which genomic prediction scenarios and training-set configurations …
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Genetic improvement of swine
… for carcass weight before it is utilized in a selection index. Sex of the pig also had a substantial effect on carcass characteristics, with gilt carcasses being superior to barrow carcasses. Sex differences in total fat were significantly smaller in the Lacombe breed than in the other breeds. …
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Selection for partial resistance to crown rust in oat
… this study were to evaluate the effectiveness of index selection as a method for improving partial resistance to crown rust, grain yield and seed weight in oat population, and to estimate heritabilities for area under disease progress curve (AUDPC) and genetic correlations between AUDPC and …
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Developing Breeding Objectives for Targhee Sheep
… by feed costs and lamb market values (P < 0.01). Selection indexes were derived within and across simulated scenarios, and correlation (r) among indexes of > 0.90 indicated that an index could be used across multiple scenarios with little loss of selection efficiency. Indexes derived within feed …
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Food selectivity of Bluegill and Green Sunfish Fry
… composition was evaluated using the linear food selection index. Both green sunfish and bluegill fry selected for Cvclops vernalis and consistently selected against cladoceran egg cases and Potamocypris spp. Moina brachiata was consistently selected for by bluegills but was initially consumed by …
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Differential dry matter production, nutritive value and grazing utilisation of perennial ryegrass varieties and mixtures evaluated within intensive grazing regimes
… be incorporated into the Irish Pasture Profit Index (PPI), an economic variety ranking selection index, to incentivise breeders to develop superior grazing varieties. An investigation of easily measured plant traits that could be used by breeders as proxies for increased grazing efficiency was …
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Selection indices for combining marker genetic data and animal model information
… evaluation due to utilization of marker assisted selection (MAS) increases genetic progress. Fernando and Grossman (1989) suggested including marker information directly into the Animal Model, Best Linear Unbiased Prediction system, but several problems need to be solved before their approach …
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Genetic evaluation and selection in multibreed populations
… theory and methods for genetic evaluation and selection are required for multibreed populations. This study developed theory for modelling genotypic means and covariances which are required to obtain genetic evaluation by best linear unbiased prediction (BLUP) for multibreed populations. Theory …
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Integrated genetic evaluation of breeding field test traits, competition traits and test status in Icelandic horses
… spirit, suited both for leisure and competition. Selection of Icelandic breeding horses is based on breeding values calculated from the breeding field test records. It has been speculated that assessed horses are not a random sample of the population, a situation that would lead to bias in …
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Genetic Heterogeneity of Residual Variance for Production and Functional Traits in American Angus Cattle
… in growth traits, suggesting the possibility of selection for uniformity. The genetic coefficient of variation for residual variance ranged from 0.90 to 0.92 in M2 and 0.31 to 0.38 in M3 for BW, 0.64 in M2 and 0.01 to 0.29 in M3 for WW, and 0.67 to 0.63 in M2 and 0.25 to 0.31 in M3 for YW. Low …
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National Merit Finalists At The University Of Central Florida-trends, Attrition, And Retention 1997-2005
The purpose of this study was to examine the trends, attrition and retention rates of National Merit Finalists at the University of Central Florida between the years of 1997 to 2005. This study was intended to provide information for higher education practitioners, faculty, and administrators to …
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Evaluation of perennial ryegrass cultivars for dairy production under different pasture management
… In experiment 4, dietary preference and selection of dairy cows for eight perennial ryegrass cultivars (AberMagic, Alto, Base, Bealey, Commando, Kamo, One50 and Prospect) growing with and without white clover was examined in a split-plot design at three phenological stages (pre-heading …
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ΣΥΜΒΟΛΗ ΣΤΗΝ ΚΑΤΑΡΤΙΣΗ ΤΟΥ ΒΕΛΤΙΣΤΟΥ ΣΧΕΔΙΟΥ ΕΠΙΛΟΓΗΣ ΤΩΝ ΧΟΙΡΩΝ ΣΤΗΝ ΕΛΛΑΔΑ
… THE TOTAL BREEDING VALUE IS BASED ON RESTRICTED SELECTION INDEXES FOR MEAT QUALITY. THE CRITERIONS OF EFFECTIVENESS ALTERNATIVE SELECTION PLANS IN THIS STUDY ARE: (1) NET ECONOMIC RETURN AND (2) SELECTION RESPONSE. THE OPTIMUM BREEDING SELECTION PLAN OF SWINE IN GREECE APPEARS AS FOLLOWS: - …