搜索结果: 1-15 共查到“农学 grazing”相关记录57条 . 查询时间(0.453 秒)
Effect of Supplemental Corn Dried Distillers Grains with Solubles Fed to Beef Steers Grazing Native Rangeland during the Forage Dormant Season
Growing Performance Blood Metabolites Digestion Characteristics Ruminal Fermentation
2016/5/20
Two experiments were conducted to evaluate the effects of the level of corn dry distillers grains with solubles (CDDGS) supplementation on growing performance, blood metabolites, digestion characteris...
The Effects of Components of Grazing System on Welfare of Fattening Pigs
Behavior Grass Grazing Pigs Soil Space Allowance
2016/5/19
The objective of this study was to clarify the most effective component of grazing for improving welfare of fattening pigs. This study compared welfare indicators of 20 fattening pigs aged 100 to 124 ...
Effects of Supplements with Different Protein Contents on Nutritional Performance of Grazing Cattle During the Rainy Season
Digestibility Energy Metabolism Nitrogen Supplementation Tropical Forages
2016/12/28
The objective of this study was to evaluate the effects of supplements with different crude protein (CP) contents on grazing cattle intake, digestibility, ruminal fermentation pattern, and nitrogen (N...
Nutritional Performance of Cattle Grazing during Rainy Season with Nitrogen and Starch Supplementation
Beef Cattle Digestibility Intake Metabolism Nellore Steers Nitrogen Retention
2016/11/10
The objective of this work was to evaluate the effects of supplementation with nitrogen and starch on the nutritional performance of grazing cattle during the rainy season. Five rumen cannulated Nello...
Fermentation pattern of the rumen and hindgut inocula of sheep grazing in an area polluted from the non-ferrous metal industry
heavy metals in vitro fermentation rumen fluid hindgut content volatile fatty acids rumen ciliates
2015/6/2
In vitro study of the rumen fluid (RF) and hindgut content (HC) fermentation by microbiota taken from sheep grazing in an area atmospherically polluted from the non-ferrous metal industry was conducte...
Effect of different agronomical measures on yield and quality of autumn saved herbage during winter grazing – 2nd communication: Crude protein, energy and ergosterol concentration
winter pasture grazing livestock metabolisable energy ergosterol mycotoxins
2015/6/2
In addition to the results published in the first communication (Opitz von Boberfeld et al., 2006) this paper presents crude protein, energy (ME) and ergosterol concentrations of autumn saved herbage ...
Effect of different agronomical measures on yield and quality of autumn saved herbage during winter grazing – 1st communication: Yield and digestibility of organic matter
low-input grassland winter grazing suckler cow forage quality Central Europe
2015/6/2
The objective of this paper was to obtain information about the effect of interactions and different agronomical measures on autumn saved herbage of different sites in Central Europe (Czech Republic, ...
Reproductive Performance of Holstein Dairy Cows Grazing in Dry-summer Subtropical Climatic Conditions: Effect of Heat Stress and Heat Shock on Meiotic Competence and In vitro Fertilization
Artificial Insemination Heat Shock Oocyte Meiotic Maturation Maternal Heat Stress
2016/5/18
The present study was designed to evaluate how environmental factors in a dry-summer subtropical climate in Terceira-Azores (situated in the North Atlantic Ocean: 38° 43′ N 27° 12′ W) can affect dairy...
Grazing alters ecosystem functioning and C:N:P stoichiometry of grasslands along a regional precipitation gradient
China–Mongolia transect N and P co-limitation N cycling plant and soil C N and P pools plant functional group composition primary production stoichiometry the Eurasian steppe
2015/2/4
The Eurasian steppe has long been subject to grazing by domestic ungulates at high levels, resulting in widespread deterioration of biodiversity and ecosystem services. While abundant evidence demonst...
C4 abundance in an Inner Mongolia grassland system is driven by temperature–moisture interaction, not grazing pressure
C4 abundance Inner Mongolia grassland system temperature–moisture interaction not grazing pressure
2015/2/4
Global warming and CO2 rise is expected to change the balance of C3 and C4 plants in grassland vegetation, but disturbance,including grazing, could also affect C3/C4 community structure. We used a six...
Seasonally dependent impacts of grazing on soil nitrogen mineralization and linkages to ecosystem functioning in Inner Mongolia grassland
Typical steppe Grazing intensity Season Soil inorganic N pools Net N mineralization Soil temperature and moisture BiomassN content Nitrogen use efficiency
2015/2/4
Previous studies have suggested grazing may alter nitrogen (N) cycling of grasslands by accelerating or decelerating soil net N mineralization. The important mechanisms controlling these fluxes remain...
Differential responses of plant functional trait to grazing between two contrasting dominant C3 and C4 species in a typical steppe of Inner Mongolia, China
plant functional trait grazing between two dominant C3 and C4 species typical steppe of Inner Mongolia China
2015/2/4
Plant functional traits have been widely used to study the linkage between environmental drivers, trade-offs among different functions within a plant, and ecosystem structure and functioning. Here, th...
Plant responses following grazing removal at different stocking rates in an Inner Mongolia grassland ecosystem
Grazing removal Ecosystem stability. Compensatory effect Precipitation variation Grassland management Grassland restoration
2015/2/4
Grazing removal is widely used in grassland management. Plant responses following grazing removal at different organizational levels, however, are not well understood. We examined plant responses at d...
Grazing intensity affected spatial patterns of vegetation and soil fertility in a desert steppe
Grassland Dryland Sheep grazing Spatial homogeneity Nitrogen Geostatistics
2015/2/4
Spatial heterogeneities of vegetation and soil can strongly affect ecological functions of ecosystems, particularly for arid and semi-arid ecosystems where vegetation has a patchy distribution and liv...
Fatty acid intake and rumen fatty acid composition is affected by pre-grazing herbage mass and daily herbage allowance in Holstein dairy cows
linolenic acid rumen fatty acids metabolism
2014/10/28
The objective of this study was to investigate the effect of level of pre-grazing herbage mass (HM) and daily herbage allowance (DHA) on the fatty acid (FA) intake and composition of ruminal content o...