搜索结果: 46-60 共查到“农学 density”相关记录184条 . 查询时间(0.203 秒)
Fragmentation, Impervious Surfaces and Water Quality: Quantifying the effects of density and spatial arrangement
Waterproof Surface The urban environment Habitat Health Water quality Land Ecological degradation planning
2014/12/1
Impervious surfaces have for many years been recognized as an indicator of the intensity of the urban environment and, with the advent of urban sprawl, they have become a key issue in habitat health. ...
The Influence of Feed Energy Density and a Formulated Additive on Rumen and Rectal Temperature in Hanwoo Steers
Beef Cattle Feed Additive Heat Stress Rectal Temperature Rumen Temperature
2016/5/17
The present study investigated the optimum blending condition of protected fat, choline and yeast culture for lowering of rumen temperature. The Box Benken experimental design, a fractional factorial ...
Evaluation of Genome Based Estimated Breeding Values for Meat Quality in a Berkshire Population Using High Density Single Nucleotide Polymorphism Chips
Meat Quality Genome Based Linear Unbiased Prediction Method [GBLUP] Bayes B
2016/5/17
The accuracy of genomic estimated breeding values (GEBV) was evaluated for sixteen meat quality traits in a Berkshire population (n = 1,191) that was collected from Dasan breeding farm, Namwon, Korea....
Effects of Storage Duration and Temperature on the Chemical Composition, Microorganism Density, and In vitro Rumen Fermentation of Wet Brewers Grains
Microorganism Density In vitro Rumen Fermentation
2016/5/16
This study aimed to investigate the effects of storage duration and temperature on the characteristics of wet brewers grains (WBG) as feeds for ruminant animals. Four storage temperatures (5°C, 15°C, ...
Effect of Varying the Energy Density of Protein-adequate Diets on Nutrient Metabolism, Clinical Chemistry, Immune Response and Growth of Muzaffarnagari Lambs
Clinical Chemistry Cortisol Energy Immunity Nutrient Utilization Lambs
2016/5/12
Effects of varied dietary energy densities on immune response and performance of Muzzafarnagari lambs were ascertained in a 180-d study. Animals (n = 24), in three groups, were fed diets providing 100...
Linkage Disequilibrium Estimation of Chinese Beef Simmental Cattle Using High-density SNP Panels
Linkage Disequilibrium Single Nucleotide Polymorphisms Effective Population Size
2016/5/11
Linkage disequilibrium (LD) plays an important role in genomic selection and mapping quantitative trait loci (QTL). In this study, the pattern of LD and effective population size (Ne) were investigate...
Native Woody Plants Diversity and Density under Eucalyptus camaldulensis Plantation, in Gibie Valley, South Western Ethiopia
The aim of the study was to assess the impact of E. camaldulensis plantation established in a semi-arid area on native woody plants diversity and density. Nested quadrant plot design, having an area of 15 m × 15 m used to collect data. Totally, 37 species at the plantation and 30 species at the native woodland, belonging to 24 families, identified. Species diversity (H′) was 1.57 at the plantation and 2.09 at the woodland forest. As for density of understory woody plants (height ≥ 1 m) the plantation forest harbored 6, 604 stems/ha while the native woodland had 7, 347 stems/ha. Seedling density (height < 1 m) at the native woodland and at the plantation there were 11,436 stems/ha and 8,865 stems/ha, respectively. The similarity of woody species composition between the woodland forest and the plantation was low. However, in terms of autochthonous tree seed bank availability, authentic hypothesis seems to prove that if clear-cut patches replanted by introduced species that do not exceed 5 ha, they still significantly favour original forest regeneration and composition in a semi-arid area and surprisingly favors the regeneration of Dodonaea angustifolia and other native species important for soil conservation, timber, bee forage and medicinal use.
2013/3/4
The aim of the study was to assess the impact of E. camaldulensis plantation established in a semi-arid area on native woody plants diversity and density. Nested quadrant plot design, having an area o...
Effect of Spatial Scale on Modeling and Predicting Mean Cavity Tree Density: A Comparison of Modeling Methods
CART, Logistic Regression Neural Network Oak Forest Prediction Accuracy
2013/3/4
Cavity trees are integral components of healthy forest ecosystems and provide habitat and shelter for a wide variety of wildlife species. Thus, monitoring and predicting cavity tree abundance is an im...
Effects of Stocking Density or Group Size on Intake, Growth, and Meat Quality of Hanwoo Steers (Bos taurus coreanae)
Stocking Density Hanwoo Growth Meat Quality Animal Welfare
2016/5/10
This study was conducted to investigate the effects of stocking density or group size on feed intake, daily gain, and carcass characteristics of Hanwoo (Korean indigenous breed) steers reared from 7 m...
Time-dependent changes in distribution patterns of soil bulk density and penetration resistance in a rangeland under overgrazing
Bulk density overgrazing penetration resistance
2011/6/29
High soil bulk density and penetration resistance as an indication of soil compaction affect soil infiltration and runoff.
Effects of Creep Feed with Varied Energy Density Diets on Litter Performance
Creep Feed Energy Piglet
2016/5/9
This study was conducted to evaluate the effects of creep feed with different energy densities on litter performance. A total of 30 sows (LandraceYorkshire) and their litters were randomly ass...
QTL Scan for Meat Quality Traits Using High-density SNP Chip Analysis in Cross between Korean Native Pig and Yorkshire
Illumina Porcine 60K SNP Beadchip QTL Meat Quality Korean Native Pig Yorkshire Pig
2016/5/6
We attempted to generate a linkage map using Illumina Porcine 60K SNP Beadchip genotypes of the F2 offspring from Korean native pig (KNP) crossed with Yorkshire (YS) pig, and to identify quantitative ...
Application of Linkage Disequilibrium Mapping Methods to Detect QTL for Carcass Quality on Chromosome 6 Using a High Density SNP Map in Hanwoo
QTL Linkage Disequilibrium Carcass Traits Hanwoo SNP
2016/5/6
The purpose of this study was to detect QTL for carcass quality on bovine chromosome (BTA) 6 using a high density SNP map in a Hanwoo population. The data set comprised 45 sires and their 427 Hanwoo s...
Effects of the Combined Stress Induced by Stocking Density and Feed Restriction on Hematological and Cytokine Parameters as Stress Indicators in Laying Hens
The Combined Stressor Stocking Density Feed Restriction Hematological Values Cytokines Laying Hens
2016/5/6
A study was conducted to investigate the effects of the combined stressor induced by high stocking density with feed restriction on immunological parameters such as leukocyte differential counts and c...
Predicting the Accuracy of Breeding Values Using High Density Genome Scans
Simulation-based Inference Prediction Accuracy Breeding Value High Density Genome Scan Single Nucleotide Polymorphism
2016/5/6
In this paper, simulation was used to determine accuracies of genomic breeding values for polygenic traits associated with many thousands of markers obtained from high density genome scans. The statis...