搜索结果: 31-45 共查到“农学 structure”相关记录185条 . 查询时间(0.265 秒)
Genetic structure and admixture between the Posavina and Croatian Coldblood in contrast to Lipizzan horse from Croatia
autochthonous horse breed microsatellite bottleneck
2015/6/24
The Posavina and Croatian Coldblood are Croatian autochthonous horse breeds with interwoven breeding histories for which studbooks have only recently been established. The Lipizzan breed has the oldes...
The relationship between culling rate, herd structure and production efficiency in a pig nucleus herd
pig computer simulation culling rate
2015/6/8
Computer simulation of sow culling was run in a nucleus herd. The specified constant culling rate from 15 to 21% was simulated for all parities. The resultant different age structure of a herd was stu...
Fish community structure of the middle course of the Bečva River
weirs fish species Beč va river Czech Republic
2015/6/5
Fish communities of the Bečva River were studied in summer and autumn 2000 and 2001. Electric fishing gear (Honda EX 1000, DC 230 V, 0.75–0.9 kW) was used for sampling. Four sampling sites (Grymo...
Airborne noise, structure-borne sound (vibration) and vacuum stability of milking systems
milking stress milking machine
2015/6/5
Problems with milking and udder health can be attributed to the following causes: (1) sound intensity level (noise) > 65 dB in the milking area, (2) transmission of oscillation (vibration) > 0.3 m/s2 ...
Qualitative structure of airborne bacteria and fungi in dairy barn and nearby environment
airborne bacteria airborne fungi dairy barn
2015/6/4
The study was conducted in a dairy barn and nearby environment to determine the level of air bacterial and fungi contamination. Measurements were performed in morning, noon and evening sampling period...
Effect of the Ratio of Non-fibrous Carbohydrates to Neutral Detergent Fiber and Protein Structure on Intake, Digestibility, Rumen Fermentation, and Nitrogen Metabolism in Lambs
Neutral Detergent Fibre Undegraded Dietary Protein Metabolisable N Lambs
2016/5/19
This study aimed to investigate the effect of the ratio of non-fibrous carbohydrates to neutral detergent fibre (NFC/NDF) and undegraded dietary protein (UDP) on rumen fermentation and nitrogen metabo...
Novel Nucleotide Variations, Haplotypes Structure and Associations with Growth Related Traits of Goat AT Motif-Binding Factor (ATBF1) Gene
ATBF1 Gene Single Nucleotide Polymorphisms Haplotypes Growth-related Traits Association
2016/5/19
The AT motif-binding factor (ATBF1) not only interacts with protein inhibitor of activated signal transducer and activator of transcription 3 (STAT3) (PIAS3) to suppress STAT3 signaling regulating emb...
The effect of different tending on stand structure and quantitative production of European beech (Fagus sylvatica L.) stand in a selected region of East Slovakia
quantitative production free crown thinning
2015/5/18
The paper deals with assessment of a long-term experiment (45 and/or 53 years of investigation) in the
90-years-old European beech (Fagus sylvatica L.) stand in a selected region of East Slovakia. T...
The effect of coppice management on the structure, tree growth and soil nutrients in temperate Turkey
coppice soil growth dynamics forest management
2015/5/18
Coppicing was widespread throughout Europe for many centuries but was largely abandoned in the second half
of the 19th century. Currently, there has been a renewed interest in coppicing for biomass ...
Eff ects of aff orestation on soil structure formation in two climatic regions of the Czech Republic
water-stable aggregates (WSA) mean weighted diameter
2015/5/18
The aim of this study was to determine the effect of agricultural land afforestation on soil characteristics.
Two sites in two regions of the Czech Republic were evaluated, at lower as well as highe...
Stand structure indices as tools to support forest management: an application in Trentino forests (Italy)
stand complexity species diversity diametric differentiation index mingling index contagion index composite stand index
2015/4/24
Stand structure and species diversity are two useful parameters to provide a synthetic measure of forest biodiversity. The stand structure is spatial distribution, mutual position, diameter and height...
On the way to continuous cover forest at middle elevations – the question of forest structure and specific site characteristics
Dauerwald stand transformation diversity production waterlogged site
2015/4/24
The transformation process of even-aged forest stands to irregular forest stands on waterlogged sites after 20 years effort was analysed. Data from two 1-ha PRP was analysed with special focus on stru...
Analysis of the genetic structure of a model Scots pine (Pinus sylvestris) seed orchard for development of management strategies
fructification gene markers isozymes Monte-Carlo test Rao coefficient Shannon index
2015/4/24
Genetic structure, diversity and clonal homogeneity were determined on the basis of the isozyme gene markers in a model Scots pine seed orchard in the north-eastern part of the Czech Republic that ori...
The structure and role of mammalian sperm RNA: a review
sperm spermatozoal RNA fertilisation
2015/4/17
The main role of sperm is the delivery of the paternal genome into the oocyte during fertilisation. However, several lines of evidence have indicated that mammalian spermatozoa contribute more than ju...
Effect of the herbal preparation Nozevit on the mid-gut structure of honeybees (Apis mellifera) infected with Nosema sp. spores
nosema disease Nozevit mid-gut mucosa mucosubstances
2015/4/15
The histopathological structure as well as content and distribution of mucosubstances in the mid-gut mucosa of the honeybee (Apis mellifera) treated with the phyto-pharmacological preparation Nozevit ...