搜索结果: 1-15 共查到“工学 cow”相关记录26条 . 查询时间(0.078 秒)
Genetic relationship between lactation persistency and conformation traits in Polish Holstein-Friesian cow population
type traits lactation persistency dairy cattle
2016/2/23
The objective of this study was to find genetic relationships between lactation persistency and conformation traits of Polish Holstein-Friesian cows. The data were derived from SYMLEK – the Polish Nat...
Effect of cow energy status on the hypercholesterolaemic fatty acid proportion in raw milk
consumer dairy cow health negative energy balance milk fat
2014/7/10
We evaluated the proportion of fatty acid groups, with an emphasis on hypercholesterolaemic fatty acids, in the milk of 25 Holstein cows during the 1st period of lactation in relation to their negativ...
A plate diffusion method for detecting fluoroquinolone residues in raw cow’s milk
residues milk quinolones microbiological method
2014/7/10
The plate diffusion method is a reference method in the Czech Republic for determination of residues of antimicrobial agents in raw materials and foodstuffs of animal origin. A new method using the E....
Biofiltration of Nitrous Oxide Using Cow-Manure Based Compost as Medium Filter
Biofilter Compost Cow-Manure Nitrous Oxide Removal Efficiency
2013/3/11
Nitrous oxide (N2O) gas is a fourth contributor in the greenhouse effect after CO2, CH4, and water vapor. Although its concentration is relatively low, but very difficult to be decomposed in the atmos...
Cow’s milk proteins immunoreactivity and allergenicity in processed food
biscuit cottage cheese hard cheese sausage intended for children technological processes yoghurt
2014/2/25
The immunoreactivity and allergenicity of proteins present in processed food (UHT milk, yoghurt, hard cheese, cottage cheese, biscuit, and sausage intended for children) were determined in this study....
Regional Distribution of Soil Phosphorus Across Congregation-Grazing Zones of Forage-Based Pastures with Cow-Calf Operations in Florida
Beef Cattle Congregation Structures Congregation Zone Grazing Zone Total Phosphorus Phosphorus Saturation Nutrient Management
2013/3/12
The arrangement of supplemental feed, water, shelter, and their concurrent interactions with topographic features may influence the distribution of animals and their simultaneous use of pasture’s reso...
Fluoroquinolone residues in raw cow’s milk
veterinaty drug RP HPCL food safety MRL LOD LOQ
2014/2/25
The aim of the study was to monitore the levels of fluoroquinolone residues in bulk samples of raw cow’s milk. The bulk samples of raw cow’s milk (n = 150) were obtained from 58 different milk supplie...
OBJECT-BASED CHANGE DETECTION FOR A CULTURAL-HISTORICAL SURVEY OF THE LANDSCAPE – FROM COW TRAILS TO WALKING PATHS
OBIA change detection path network ortho imagery alpine environment IMAGINE Objective
2014/6/12
Historical maps, aerial images and other historic documents are finding their way into the digital world. This offers new possibilities but also requires adapted technologies and interdisciplinary app...
智能化个体奶牛精确饲喂机设计与实验（Design and Experiment on Intelligent Precising Feeding Machine for Single Dairy Cow）
奶牛养殖 精确饲喂 射频识别技术
2009/12/28
要实现奶牛高产必须保证奶牛瘤胃pH值的稳定，要实现瘤胃pH值稳定必须对个体奶牛精饲料量进行精确饲喂，精饲料的数量对瘤胃pH值波动具有重要影响。设计了基于射频识别技术和单片机技术的个体奶牛精确饲喂机，可以实现个体奶牛精饲料量的精确饲喂。通过一个月饲喂实验表明，个体奶牛日产量提高了4kg。
牛粪、鸡粪和稻秆混合的沼气发酵特性与工艺优化（Fermentation and Process Optimization of Mixed Cow Dung,Chicken Manure and Rice Straw for Biogas Production）
沼气发酵 牛粪 鸡粪 稻秆 温度 配比
2010/4/1
采用可控恒温厌氧发酵装置，选用牛粪、鸡粪、稻秆3种原料，按干物质比例0∶2∶1、0.4∶1.6∶1、0.8∶1.2∶1、1.2∶0.8∶1、1.6∶0.4∶1、2∶0∶1混合，研究了各配比在15℃、20℃、25℃、30℃下的厌氧发酵情况。结果表明：随温度升高，各配比产气速率和累积产气量均增大，15℃下发酵周期最长，其他温度对发酵周期影响无显著差异；不同配比下，累积产气量均呈先增大后减小的趋势，牛粪...
奶牛体型评定三维图像同步采集系统（3D Synchronization Imaging System for Linear Appraisal of Dairy Cow Conformation）
奶牛 体型评定 三维图像
2009/5/22
设计奶牛体型评定三维图像同步采集系统，采用集散控制结构协调奶牛定位设备、图像采集装置按预定时序工作，应用3个CCD彩色摄像机与具有多通道、多独立图像芯片的DH—QP300型图像采集卡，实现了奶牛三维图像同步采集；采用LabVIEW软件作为采集主程序，通过调用动态链接库控制通用图像采集卡，选用场方式采集模式提高图像质量。试验证明，每头奶牛的图像采集与线性评定时间在3min左右,小于5min(标准)。...
Evidence of Some Trace Elements, Organochlorine Pesticides and PCBs in Slovenian Cow's Milk
trace elements (Pb, Cd, As, Hg) lindane alpha-HCH DDT
2009/3/23
From year 1994 to 1998 samples of raw cow's milk from 19 dairy locations were examined for residues of trace elements. Pb contents in all 188 samples corresponded to tolerance level (0.1 mg/kg) and in...
Quality of Cow's and Goat's Fermented Bifido Milk during Storage
goat's milk bifidobacteria fermentation
2009/3/20
The fermented bifido milk, with and without supplements (skim milk powder and whey protein concentrate powder) from commercially available goat's and cow's long-life milk was produced. In goat's milk ...
Seasonal Evolution of Hydrophilic and Hydrophobic Peptide Contents in Cheeses Made from Ewe’s Goat’s or Cow’s Milk
proteolysis goats ewes cows cheese
2014/3/10
Proteolysis is the principal and most complex biochemical event occurring during the maturation of the majority of ripened cheese varieties. In addition to softening the cheese body, proteolysis influ...
Baroinactivation of Staphylococcus epidermidis – mathematical model and its verification using human and cow milk
Staphylococcus epidermidis baroinactivation human milk
2014/3/10
Staphylococcus epidermidis, commonly found on the human skin, may contaminate human milk. High-pressure pasteurisation of human milk under normal temperature preserves the majority of its protective a...
