搜索结果: 1-15 共查到“农学 size”相关记录124条 . 查询时间(0.296 秒)
Size-selective fishing results in trade-offs between fishery yield, reproductive capacity（图）
Size-selective fishing results fishery yield reproductive capacity
2020/3/20
How people fish matters as much as the quantity they’ve harvested, say University of Maine researchers Kara Pellowe and Heather Leslie.Their study in Ecosphere details the impacts of size-selective fi...
Studies on genome size estimation, chromosome number, gametophyte development and plant morphology of salt-tolerant halophyte Suaeda salsa
Soil salinization Suaeda salsa Gametophyte Chromosome Genome
2024/2/5
Soil salinization and alkalization are among the major agricultural threats that affect crop productivity worldwide, which are increasing day by day with an alarming rate. In recent years, several hal...
InDel Marker Based Estimation of Multi-Gene Allele Contribution and Genetic Variations for Grain Size and Weight in Rice (Oryza sativa L.)
Insertion/Deletion (InDel) markers genetic variation multi-gene allele contributions rice (Oryza sativa L.), grain size and weight rice germplasm
2023/8/9
The market success of any rice cultivar is exceedingly dependent on its grain appearance, as well as its grain yield, which define its demand by consumers as well as growers. The present study was und...
Impact of plot size and model selection on forest biomass estimation using airborne LiDAR: A case study of pine plantations in southern Spain
airborne laser scanning forest inventory regression survey design genetic selection methods
2017/4/6
We explored the usefulness of LiDAR for modelling and mapping the stand biomass of two conifer species in southern Spain. We used three different plot sizes and two statistical approaches (i.e. stepwi...
Introduction of suitable species for planting in gaps of different size (case study: Loveh forest, Golestan, Iran)
canopy gap length of spring shoots mean annual increment of diameter mean annual increment of height seedling
2017/4/6
This study was carried out in Loveh forest, north of Iran. We measured the quantitative characteristics of seedlings including collar diameter (measured at 1 cm above the soil surface), height, and cu...
Influence of dexmedetomidine-propofol-isoflurane and medetomidine-propofol-isoflurane on intraocular pressure and pupil size in healthy dogs
alpha-2 agonist premedication eye ophthalmology
2016/12/8
The present prospective, randomised, double-blinded clinical study was designed to investigate the commonly used anaesthetic combinations of dexmedetomidine-propofol-isoflurane and medetomidine-propof...
Effect of dietary magnesium,calcium,phosphorus,and limestone grain size on productive performance and eggshell quality of hens
magnesium oxide limestone granularity mixed feed Ca : NPP ratio egg shell strength layers
2016/11/11
Two experiments conducted on laying hens, aged 50 and 52 weeks, were carried out to evaluate the effect of dietary Mg and its relationship to the Ca : NPP (non-phytate phosphorus) ratio using a variou...
Expression analysis of the porcine Homeobox A11 gene and its association with litter size in Large White pigs
endometrium HOXA11 qPCR single nucleotide polymorphism litter size
2016/6/3
The homeobox A11 (HOXA11) gene, a well-known transcriptional regulator, plays a critical role in normal development of the uterus. In this study, the porcine HOXA11 gene, including its promoter region...
Equivalent effective population size mating as a useful tool in the genetic management of the Ibicenco rabbit breed (Conill Pages d’Eivissa)
diversity genetic structure pedigree small populations
2016/3/24
The Ibicenco rabbit (Conill Pages D’Eivissa) is a rare breed mainly located on Ibiza Island, in rural areas. Today breeders are looking for a sustainable use and alternative routes for profitability o...
Differential diameter-size effects of forest management on tree species richness and community structure: implications for conservation
Differential diameter-size effects tree species richness
2015/11/13
In this paper we tested the hypothesis that logging effects in the adult tree
community reverberate upon the regeneration contingent. We examined the differences on
the tree community between forest...
Uterine size in replacement gilts associated with age, body weight, growth rate, and reproductive status
pig reproduction puberty uterus
2015/7/2
The objective of the present study was to determine the association between the uterine size and age, body weight, growth rate, and reproductive status in Landrace × Yorkshire crossbred gilts. Genital...
Simultaneous estimation of genetic parameters for production and litter size traits in Czech Large White and Czech Landrace pigs
total number of piglets born number of piglets weaned lean meat content average daily gain heritability genetic correlation REML
2015/6/24
Genetic parameters for total number of piglets born per litter, number of piglets weaned per litter, lean meat content, and average daily gain from birth till the end of the field test were estimated ...
Effect of service sire on litter size traits in Czech Large White and Landrace pigs
pig litter size traits genetic parameters
2015/6/23
The proportion of variance for service sire was in the range from
2 to 3% (standard error approx. 0.2%) in Czech Large White and 2% (standard error approx. 0.3%) in Czech
Landrace for all thr...
Effect of size sorting on the survival, growth and cannibalism in pikeperch (Sander lucioperca L.) larvae during intensive culture in RAS
pikeperch larvae sorting RAS growth survival cannibalism
2015/6/9
The aim of the experiment was to determine the impact of sorting on the growth, survival, and cannibalism of pikeperch larvae during intensive culture in recirculation systems. Larvae aged 48 days pos...
Effects of lucerne particle size and source of dietary carbohydrates on in situ degradation and ruminal variables in sheep
forage particle size carbohydrates rumen
2015/6/8
The effects of altering forage particle size and source of rapidly degradable carbohydrates on in situ degradation and ruminal variables were studied in four Iranian male sheep. The study was designed...