搜索结果: 1-15 共查到“农学 layers”相关记录24条 . 查询时间(0.054 秒)
Evaluation of gaseous concentrations, bacterial diversity and microbial quantity in different layers of deep litter system
Deep Litter System Environment Gases Concentrations Bacterial Diversity Microbial Quantity
2017/3/9
An experiment was conducted to investigate the environment of the deep litter system and provided theoretical basis for production.
The long-term administration of a clinoptilolite-supplemented feed to layers and its effect on performance, haematological parameters and metabolic profile
ZeoFeed layers performance blood tests
2015/6/5
120 selected layers (Bovans Goldline hybrid) aged 19 weeks with an average weight of 1 735 g were divided into two balanced groups: control group (Group C) and experimental (Group E). Layers were rear...
The effect of carnitine on hatching rate and metabolic profile of blood in breeding layers
layers; L-carnitine; reproduction; haematological and biochemical parameters
2015/6/1
We examined the effect of orally administered L-carnitine (at a dose of 30 mg per kg of feeding mixture) on egg hatching and some haematological and biochemical parameters of blood plasma in COBB 500 ...
Computation method of the drainage retention capacity of soil layers with a subsurface pipe drainage system
agricultural areas groundwater reservoir hydrological extremes unsteady-state groundwater conditions
2015/3/13
Methodological procedure for determining the drainage retention capacity (DRC) of surface layers under conditions of unsteady-state groundwater flow was demonstrated. DRC of the drainage system can be...
Mechanical behaviour of several layers of selected plant seeds under compression loading
jatropha common bean garden pea common sunflower pressing wave effect
2014/2/25
This article is focused on the determination of the mechanical behaviour of several layers of plant seeds namely; garden pea (Pisum sativum L.), common bean (Phaseolus vulgaris L.), common sunflower (...
Effect of Short-term Water Restriction on Body Weight, Egg Production, and Immune Response of Local and Commercial Layers in the Late Phase of Production
Water Restriction Body Weight Egg Production Immune Response
2016/5/6
Forty-five Hisex commercial layers and forty-five local Saudi breed layers were used to determine the acceptable limit of short-term water restriction in the late phase of production, when the problem...
Development of feed package for layers using low energy agro-industrial by products
Feed package low energy agro-industrial by-product
2011/1/12
A feeding trial of 20 weeks duration was conducted using 240 point-of-lay Hy-line layers to study the nutritive value of diets containing low-energy agro-industrial by-products namely wheat bran, maiz...
不同土层土壤水分特征曲线的空间变异及其影响因素（Spatial Variability of Soil Water Retention Curve in Different Soil Layers and Its Affecting Factors）
土壤水分特征曲线 空间变异 多重分形
2010/1/28
利用多重分形和联合多重分形方法，对陕西杨凌地区0～20cm和20～40cm土层van Genuchten模型参数的空间变异性及其影响因素进行了研究。结果表明：0～20cm和20～40cm土层参数α都具有明显的多重分形特征，空间变异性较强，且分别是由低值和高值分布引起的；参数n和θs的多重分形特征不明显，空间变异性较弱。0～20cm和20～40cm土层van Genuchten模型参数与土壤物理特性...
Histological Similarities of Abscission Layers in the Pedicel of Asian and African Rices and Their Relatives
Abscission layer African rice O. glaberrima Steud Wild rice
2009/8/4
Histological peculiarities of the abscission layer between pedicel and spikelet were investigated in Asian rice, African rice, their putative ancestral wild species, and the other nine wild Oryza spec...
The Short-term Response of Layers on Commercial Layers Mash and Dietary Fishmeal Supplement in Adamawa State,Nigeria
short term response layers layers mash dietary fishmeal
2009/8/3
Sixty Harco layers in their 12th weeks of lay were randomly allocated to six treatments, ie T1 (100% layers mash), T2 (layers mash+1% fishmeal), T3 (layers mash+2% fishmeal), T4 (layers mash+3% fishme...
Replacement of Fish Meal with Maggot Meal in Cassava-based Layers' Diets
cassava egg quality fish meal maggot-meal layers
2009/7/30
The trial reported herein investigated the use of maggot meal as a replacement for fish meal in a cassava products-based layers diet. Old laying hens (50 weeks in lay) made up of two hybrids (Isa Brow...
Genotypic Variation of the Ability of Root to Penetrate Hard Soil Layers among Japanese Wheat Cultivars
Breeding materials Genetic variation Hard soil Penetrating ability of root Screening Soil compaction Triticum aestivum L. Wheat
2009/7/23
The hard soil in the field is a major constraint for the cereal production because it mechanically restricts the root expansion and water absorption. The ability of root to penetrate into the hard soi...
Determination of the Effects of Different Irrigation Programs on Water Consumption in Different Soil Layers and Root Growth of Cotton
Different Irrigation Programs Water Consumption Different Soil Layers Root Growth of Cotton
2009/1/14
This study was conducted to determine of the effects of different irrigation programs on water consumption in different soil depths and root growth of cotton. The amount of irrigation water applied wa...
Effects of moisture content of grain layers and their arrangement in the silo on the temperature and pressure distribution
cereals silo temperature pressure distribution
2008/11/26
In the present paper, results of temperature and pressure measurement of some cereals (triticale, rye, oat) along with the vertical silo wall were presented. Laminar filling of the silo with layers o...
Mass exchange in adjacent layers of grain material stored in silo
moisture diffusion grain storage wall load
2008/11/14
The paper presents the results of a study on the process of moisture diffusion during barley grain storage in a grain storage silo. The moisture migration was caused by concentration gradient. The stu...